DIAGNOSIS AND TESTING

Principles of Operation

For a detailed description of the Communications Network, refer to the relevant Description and Operation sections in the workshop manual. REFER to:

Communications Network (418-00 Module Communications Network, Description and Operation),

Communications Network (418-00 Module Communications Network, Diagnosis and Testing),

Communications Network (418-00, Diagnosis and Testing).

Inspection and Verification

CAUTION:

Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor vehicle.

Verify the customer concern.

Visually inspect for obvious signs of damage and system integrity.

Visual Inspection

Electrical
Fuses (refer to electrical guide) Wiring harness Correct engagement of electrical connectors Loose or corroded connections Routing of fibre optic harnesses Correct engagement of optical connectors Correct placement of optical connectors (ring order) Correct assembly of optical connectors (backout, etc) Damage to fibre (chafing, abrasion, kinking, cuts, etc)

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

If the cause is not visually evident, check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.

CAN Network Integrity Checks

In the event that one or more control modules are not communicating on either the Medium Speed (MS) or High Speed (HS) CAN Buses, checks can be performed to confirm the integrity of the CAN harness.

The following information is applicable to HS and MS CAN Buses accessible via the J1962 diagnostic connector.

Module Connections to the CAN Harness

Modules are connected to the CAN harness either in a 'loop' or 'spur' configuration. In the 'loop' type configuration the CAN harness loops into the module (via two connector pins) and then loops out of the module (via another two connector pins). In the 'spur' type configuration, a harness spur is spliced into the main 'backbone' of the CAN harness and the module is connected to the harness spur via two connector pins.

CAN Harness Architecture

For a detailed description of the CAN Networks and architecture, refer to the relevant Description and Operation section in the Workshop Manual. REFER to:

Communications Network (418-00 Module Communications Network, Description and Operation),

Communications Network (418-00 Module Communications Network, Diagnosis and Testing),

Communications Network (418-00, Diagnosis and Testing).

IDS Vehicle Integrity Test

If a control module is suspected of non-communication, the Network Integrity test application available on the manufacturer approved diagnostic system can be used to confirm if communication is possible between the control modules on the vehicle and the manufacturer approved diagnostic system (via the J1962 diagnostic connector ). The results from the test can be used to determine if either a single module or multiple modules are failing to communicate.

CAN Terminating Modules

If the Network Integrity test indicates that one or more module on one of the CAN networks (HS or MS) are failing to communicate, there are several checks that can be made. The first step is to identify if both of the CAN terminating modules on each individual CAN Bus are communicating. If both CAN terminating modules for each individual CAN Bus are communicating (identified via the Network Integrity test), then it can be confirmed that the main 'backbone' of the CAN harness is complete. The main 'backbone' of the CAN harness consists of all the modules connected to the CAN harness via a 'loop' configuration and also includes the two terminating modules.

Communication with both CAN terminating modules via the Network Integrity test confirms the physical integrity of the main 'backbone' of the CAN harness (and the harness spur to the J1962 diagnostic connector). This means that there is no requirement to check the resistance of the CAN Network. This is because the standard check for 60 ohms across the CAN High and CAN Low lines will not provide any additional information regarding the physical condition of the CAN harness, beyond what has already been determined from the Network Integrity test.

Non-Communication of a Terminating Module

If a Network Integrity test reveals a terminating module is failing to communicate it can indicate a break in the main 'backbone' of the CAN harness. The first checks should always be to confirm the power and ground supplies to the non-communicating module are correct. Providing these are correct, the resistance between the CAN High and CAN Low lines at the J1962 connector can be checked to determine the integrity of the main 'backbone' of the CAN harness. After disconnecting the battery a reading of 120 ohms would indicate an open circuit in the main 'backbone' of the CAN harness. Alternatively, a reading of 60 ohms would indicate that there is no open circuit fault with the main 'backbone' of the CAN harness.

It is worth noting that even if one of the terminating modules is disconnected from the CAN harness, communications between the modules still connected may still be possible. Therefore communication between the manufacturer approved diagnostic system and the connected modules may also be possible.

Locating CAN Harness Open Circuits

In the case where multiple modules, including a terminating module, are failing to communicate, having first confirmed the power and ground supplies are correct, the approximate location of the open circuit can be identified from analysis of the Network Integrity test results and reference to the relevant CAN network circuit diagrams. For example, if an open circuit existed in a certain position on the CAN harness, any module positioned on the Network between the J1962 connector and the open circuit should return a response during the Network Integrity test. No responses would be returned from any modules past the open circuit fault in the Network.

CAN Harness 'Spur' Type Configuration Circuits

If, after the initial checks (Network Integrity test using the manufacturer approved diagnostic system, and power and ground supplies to the module have been checked and confirmed as correct), a module that is connected to the CAN harness via a 'spur' type configuration is suspected of not communicating, then the physical integrity of the CAN harness 'spur' can be checked.

This is most easily undertaken by individually checking the continuity of the CAN High and CAN Low lines between the non-communicating module connector (with the module disconnected) and the J1962 diagnostic connector.

'Lost Communications' DTCs

As well as the methods described so far in this document, which can be used to determine the location of an open circuit in the CAN harness, 'Lost Communications' DTCs can also be used for this purpose. Lost communication DTCs mean that a module is not receiving CAN information from another module.

For example, if a global DTC read were to be carried out, only DTCs stored in the modules that the manufacturer approved diagnostic system could communicate with would be displayed. If there was an open circuit fault in a certain position on the CAN harness, the modules that could display DTCs would all be prior to the open circuit on the Network, and these modules should display 'Lost Communications' DTCs with all the modules located on the Network past the open circuit fault.

'Bus off' DTCs

The references to bus and its condition refer to the network concerned and the modules on that network.

If a module logs a 'Bus Off' DTC, it means that the module has detected CAN transmission errors and has disabled its's own CAN transmissions and disconnected itself from the network in an attempt to allow the rest of the network to function. At this point the 'Bus Off' DTC is set. A common cause of 'Bus Off' DTCs can be a short circuit in the CAN network.

Media oriented systems transport (MOST) diagnosis

Overview

The basic guidelines are covered in the description and operation section, such as not attempting to repair fibre optic cables, but additional precautions include:

Do not touch the exposed ends of the optical fibres (grease from skin can contaminate the fibre)
Whenever the fibre optic cable is disconnected, cover the connectors to prevent dust contamination
Do not expose the fibre optic cable to heat
Do not bend the fibre optic cable through less than a 25 mm (one inch) radius
Do not use laser pens to test the fibre optic cable's ability to pass light
- There is a dedicated tester to use with the MOST network modules and fibre optic harness to assist with diagnosis and to test the fibre optic cable's ability to pass light

MOST tester

Before connecting the tester to the network, turn on the unit and check that the red power on indicator is illuminated.

If not, the battery should be replaced before using the tester.

2+0 Self-test

Set the connector selector switch to 2+0.

Select beep or LED on the tester, depending on your choice of indicator.

Turn the tester on and check the operation of the power indicator.

Using the 2+0 loop-back lead from the kit, push it into the 2+0 connector housing in the tester until it clicks into place.

Press the red test button in the center of the tester.

Depending on your choice in step 2, the tester will give either an audible tone or a green light.

2+4 Self-test

Carry out the self-test in the same way as for 2+0, but using the 2+4 loop-back lead and select 2+4 on the connector selector switch.

Vehicle diagnosis

CAUTION:

Make sure the tester is not connected to the MOST network when either switching the tester on or switching between 2+0 and 2+4, as the tester emits a brief pulse of light which could introduce a fault into the network.

Use the approved diagnostic system or a scan tool to retrieve any DTCs.

Set the connector selector switch to 2+0.

Disconnect the intermediate fibre optic cable connector and connect the male half to the tester connector at the top of the unit using the adaptor in the kit.

Turn the tester on and check the operation of the power indicator.

Set the LED/beep selector to LED.

Turn the ignition switch to the ON position.

If the green LED is active, a signal has been received indicating that the first half of the optical ring is functioning.

If the green LED is NOT active, no signal has been received indicating that the first half of the optical ring is NOT functioning.

DTC INDEX

Central Junction Box (CJB)

CAUTION:

When probing connectors to take measurements in the course of the pinpoint tests, use the adaptor kit, part number 3548-1358-00

NOTES:

If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior to the installation of a new module/component.
Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give extra information read by the manufacturer-approved diagnostic system).
When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal places and with a current calibration certificate. When testing resistance, always take the resistance of the DMM leads into account.
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may be the cause. Always check for loose connections and corroded terminals.

DTC	Description	Possible cause	Action
B118662	Tailgate Power Striker Signal Compare Failure	Power striker circuit short or open circuit Power striker unit fault Internal CJB fault	Refer to the electrical guides and check the power striker circuit. Check the operation of the power striker unit. If the fault persists, suspect an internal fault with the CJB. If no other DTCs are present, ignore this fault.
B11C312	Power Striker Open Relay	Power striker open relay circuit short circuit to power, over-temperature or open load	Refer to the electrical guides and check the circuit, repair as necessary.
B1A0016	Control Module	Control module circuit voltage below threshold: Voltage less than (master control module voltage - 2V) for > 10 seconds	Check the power supply and ground connections for the relevant module.
B1A9074	Sunroof Moves Too Slowly	Roof opening panel actuator slipping (mechanical problem)	Inspect/renew the roof opening panel actuator as necessary.
B1A9131	Speed/Position Sensor A	Roof opening panel sensor wiring circuit open or short circuit Roof opening panel position sensor failure	Refer to the electrical guides and check the circuit from the roof opening panel control module to the roof opening panel motor for open or short circuit. Renew the motor/roof opening panel as necessary.
B1A9231	Speed/Position Sensor B	Roof opening panel sensor wiring circuit open or short circuit Roof opening panel position sensor failure	Refer to the electrical guides and check the circuit from the roof opening panel control module to the roof opening panel motor for open or short circuit. Renew the motor/roof opening panel as necessary.
B1A9393	Invalid Roof Position	Roof opening panel position beyond expected range Roof opening panel sensor wiring circuit open or short circuit Roof opening panel position sensor failure	Clear the DTC and check the operation of the roof opening panel. Refer to the electrical guides and check the circuit from the roof opening panel control module to the roof opening panel motor for open or short circuit. Renew the motor/roof opening panel as necessary.
B1A9801	LIN Bus Circuit #1	LIN Bus short circuit to power or ground	The LIN Bus is the serial link to the rain sensor, sunroof, memory seat modules which are optional install items, but the control of the DTC logging is determined from the car configuration file (CCF) (installed or not). Repair action only required if one or more items installed and not functioning correctly.
B1A9881	LIN Bus Circuit #1	Software error Rain/ambient light sensor lost power during transmission	No repair action necessary unless customer complains of rain sensor, roof opening panel or memory seat not functioning correctly. The LIN Bus is the serial link to the rain sensor, sunroof, memory seat modules which are optional install items, but the control of the DTC logging is determined from the car configuration file (CCF) (installed or not). Repair action only required if one or more items installed and not functioning correctly.
B1A9883	LIN Bus Circuit #1	LIN Bus check sum error	The LIN Bus is the serial link to the rain sensor, sunroof, memory seat modules which are optional install items, but the control of the DTC logging is determined from the car configuration file (CCF) (installed or not). Repair action only required if one or more items installed and not functioning correctly.
B1A994C	Power On Reset	Central junction box (CJB) power supply or battery reconnected	No action necessary, clear/ignore DTC.
B1B0042	Sub-Module 'A'	Software error - general memory failure	No action necessary, clear/ignore DTC.
B1B0044	Sub-Module 'A'	Software error - data memory failure	No action necessary, clear/ignore DTC.
B1B0045	Sub-Module 'A'	Software error - program memory failure	No action necessary, clear/ignore DTC.
B1B0047	Sub-Module 'A'	Software error	No action necessary, clear/ignore DTC.
B1B014A	Key Transponder	Unknown key, key transponder communication error during cranking	No action necessary, clear/ignore DTC.
B1B014C	Key Transponder	Incorrect transponder key/new key not coded. DTC logged at each ignition cycle until both keys have been learned during programming	Clear DTC and retest.
B1B0146	Key Transponder	In learn mode, failed to learn key. DTC logged when a key programming operation fails	Complete the key programming procedure and clear DTC.
B1B0166	Key Transponder	Excessive non-valid key usage - logged when successive multiple codes are used in attempt to discover transponder code	No action necessary, clear/ignore DTC.
B1B0187	Key Transponder	No communication from key transponder during start event Rear tail/brake lamp bulb incorrect spec Rear tail/brake lamp bulb fault	Check for other DTCs. If this DTC is logged along with DTC B1C6012 in the Network Communications Module and DTC C1A5564 in the Park Brake Module, rectify DTC B1C6012 first, clear the DTCs and retest. Check key transponder information and clear DTC.
B1B0228	LF Coil	Key transponder communication tolerance error	No repair for this DTC, clear and ignore.
B1B0296	LF Coil	Ignition key transponder coil circuit open or short circuit	Refer to the electrical guides and check the transponder circuit, repair/renew as necessary.
B1B0353	Transponder Key #1	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0392	Transponder Key #1	Known key password invalid Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B0396	Transponder Key #1	Ignition key transponder coil circuit open or short circuit	Refer to the electrical guides and check the transponder coil circuit, repair/renew as necessary.
B1B0453	Transponder Key #2	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0492	Transponder Key #2	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B0553	Transponder Key #3	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0592	Transponder Key #3	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B0653	Transponder Key #4	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0692	Transponder Key #4	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B0753	Transponder Key #5	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0792	Transponder Key #5	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B0853	Transponder Key #6	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0892	Transponder Key #6	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B0953	Transponder Key #7	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B0992	Transponder Key #7	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1053	Transponder Key #8	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1092	Transponder Key #8	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1153	Transponder Key #9	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1192	Transponder Key #9	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1253	Transponder Key #10	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1292	Transponder Key #10	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1353	Transponder Key #11	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1392	Transponder Key #11	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1453	Transponder Key #12	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1492	Transponder Key #12	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1553	Transponder Key #13	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1592	Transponder Key #13	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1653	Transponder Key #14	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1692	Transponder Key #14	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1753	Transponder Key #15	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1792	Transponder Key #15	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1853	Transponder Key #16	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1892	Transponder Key #16	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B1953	Transponder Key #17	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B1992	Transponder Key #17	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2053	Transponder Key #18	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2092	Transponder Key #18	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2153	Transponder Key #19	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2192	Transponder Key #19	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2253	Transponder Key #20	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2292	Transponder Key #20	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2353	Transponder Key #21	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2392	Transponder Key #21	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2453	Transponder Key #22	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2492	Transponder Key #22	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2553	Transponder Key #23	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2592	Transponder Key #23	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2653	Transponder Key #24	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2692	Transponder Key #24	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2753	Transponder Key #25	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2792	Transponder Key #25	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2853	Transponder Key #26	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2892	Transponder Key #26	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B2953	Transponder Key #27	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B2992	Transponder Key #27	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B3053	Transponder Key #28	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B3092	Transponder Key #28	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B3153	Transponder Key #29	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B3192	Transponder Key #29	Known key password invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B3253	Transponder Key #30	Theft warning - triggered when a known disabled key is used in the ignition	No action necessary, clear/ignore DTC.
B1B3292	Transponder Key #30	Known key password .invalid - Key transponder communication confirmation error	No action necessary, clear/ignore DTC.
B1B3386	Target ID Transfer	Failed communication with engine management system	No action necessary, clear/ignore DTC.
B1B3387	Target ID Transfer	Failed communication with engine management system	No action necessary, clear/ignore DTC.
B1B3486	Target ID Transfer	Failed communication with engine management system	No action necessary, clear/ignore DTC.
B1B3487	Target ID Transfer	Failed communication with engine management system	No action necessary, clear/ignore DTC.
B1B3501	RF Scanning Receiver	Communications with the RF scanning receiver failed	No action necessary, clear/ignore DTC.
B1B551C	Rain Sensor Module	Rain sensor module supply voltage out of range	Refer to the electrical guides and check the power supply to the sensor module from the CJB, repair as necessary. If the power supply exists, no further action necessary, clear/ignore DTC.
B1B5546	Rain Sensor Module	Rain sensor module calibration/parameter memory failure: Initialization error - unable to perform optical calibration	Check the cleanliness of the windscreen in the sensor location. Check for correct installation of the sensor to the optical element and the adherence of the optical element to windscreen. Clear DTC and retest. If DTC persists, renew the rain/ambient light sensor.
B1B5549	Rain Sensor Module	Rain sensor module internal electronic failure	Renew the rain/ambient light sensor.
B1B5587	Rain Sensor Module	No response from rain sensor module	Rain sensor is not installed to all variants (optional). Fault logging is inhibited by the CCF, but an incorrectly configured CCF could give erroneous DTC logging. Repair action only required for vehicles with sunroof installed.
B1B5591	Rain Sensor Module	Rain sensor module - measured temperature outside of normal operating range	No action necessary, clear/ignore DTC.
B1B5646	Sunroof Module	Roof opening panel control module - calibration/parameter memory failure	Clear the DTC and re-test. If the DTC resets, renew the roof opening panel control module. Refer to the guided diagnostic routine for this code on the approved diagnostic system.
B1B564B	Sunroof Module	Roof opening panel control module - over temperature (sensor defective or not calibrated)	If no customer complaint issue exists with the roof opening panel operation, no action necessary, clear/ignore DTC. If functionality if affected, refer to the electrical guides and check the control module connector and circuit. Repair as necessary and clear the DTC. If the DTC persists and panel operation is incorrect, renew the control module.
B1B5687	Sunroof Module	No response from sunroof module	Roof opening panel is not installed to all variants (option). Fault logging is inhibited by the CCF, but an incorrectly configured CCF could give erroneous DTC logging. Repair action only required for vehicles with sunroof installed.
B1B5916	Excessive Continuous Motor Operation	5V power supply failure to the seat adjustment sensors	Refer to the electrical guides and check 5V from the seat memory module to the seat motor and circuit. If no 5V supply exists, repair/renew as necessary.
B1B5968	Excessive Continuous Motor Operation	Roof opening panel has been operated continuously resulting in a motor overheat event (panel may have stopped working during overheat period)	No action necessary, clear DTC.
B1B6916	12 Volt Supply Circuit	Software error Power supply failure from CJB to seat memory module	If no customer complaint issue exists with seat operation, no action necessary, clear/ignore DTC. If seat functionality if affected, refer to the electrical guides and check the memory control module power supply and circuit. Repair as necessary and clear the DTC. If a power supply to the module exists and power outputs from the module are not present, renew the memory module.
B1B7001	LIN Bus Circuit #2	SLIN Bus short circuit to power or ground	SLIN Bus is the serial link to the battery backed-up sounder (BBUS). This is an optional item, but the control of the DTC logging is determined from the CCF (BBUS installed or not). Repair action only required if BBUS installed and not functioning correctly.
B1B7081	LIN Bus Circuit #2	SLIN Bus header error	SLIN Bus is the serial link to the battery backed-up sounder (BBUS). This is an optional item, but the control of the DTC logging is determined from the CCF (BBUS installed or not). Repair action only required if BBUS installed and not functioning correctly.
B1B7083	LIN Bus Circuit #2	SLIN Bus check sum error	SLIN Bus is the serial link to the battery backed-up sounder (BBUS). This is an optional item, but the control of the DTC logging is determined from the CCF (BBUS installed or not). Repair action only required if BBUS installed and not functioning correctly.
B1B8541	Memory Control Module	Seat module error	Renew the seat memory control module. Refer to the warranty policy and procedures manual if a module is suspect.
B1B8549	Memory Control Module	Seat module error	If no customer complaint issue exists with seat operation, no action necessary, clear/ignore DTC. If seat functionality is affected, renew module. Refer to the warranty policy and procedures manual if a module is suspect.
B1B8587	Memory Control Module	No response from seat memory control module	Seat memory is not installed to all variants (optional). Fault logging is inhibited by the CCF, but an incorrectly configured CCF could give erroneous DTC logging. Repair action only required for vehicles with sunroof installed.
B1B8673	Seat Height Motor Relay	Memory control module internal relay fault (stuck on)	Renew the seat memory control module. Refer to the warranty policy and procedures manual if a module is suspect.
B1B8693	Seat Height Motor Relay	Software error Memory control module internal relay fault (inoperative)	If no customer complaint issue exists with seat operation, no action necessary, clear/ignore DTC. If seat functionality is incorrect check/renew the control module as necessary. Refer to the warranty policy and procedures manual if a module is suspect.
B1B8731	Seat Height Motor Speed/Position Sensor	Wiring circuit/connector issue Seat height motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat height motor. Repair/renew as necessary. If no circuit fault is found check/renew the seat height motor.
B1B873A	Seat Height Motor Speed/Position Sensor	Seat height moved beyond expected range Sensor circuit open or short circuit Seat adjustment range issue Seat height motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat height motor. Repair/renew as necessary. Check the seat adjustment ranges to ensure correct operation. Renew the seat height motor.
B1B8873	Seat Height Motor Relay	Memory control module internal relay fault (stuck on)	Renew the seat memory control module. Refer to the warranty policy and procedures manual if a module is suspect.
B1B8893	Seat Slide Motor Relay	Software error Memory control module internal relay fault (inoperative)	If no customer complaint issue exists with seat operation, no action necessary, clear/ignore DTC. If seat functionality is incorrect check/renew the control module as necessary.
B1B8931	Seat Slide Motor Speed/Position Sensor	Wiring circuit/connector issue Seat slide motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat slide motor. Repair/renew as necessary. If no circuit fault is found check/renew the seat slide motor.
B1B893A	Seat Slide Motor Speed/Position Sensor	Seat slide moved beyond expected range Sensor circuit open or short circuit Seat adjustment range issue Seat slide motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat slide motor. Repair/renew as necessary. Check the seat adjustment ranges to ensure correct operation. Renew the seat slide motor.
B1B9073	Seat Tilt Motor Relay	Memory control module internal relay fault (stuck on)	Renew the seat memory control module. Refer to the warranty policy and procedures manual if a module is suspect.
B1B9093	Seat Tilt Motor Relay	Software error Memory control module internal relay fault (inoperative)	If no customer complaint issue exists with seat operation, no action necessary, clear/ignore DTC. If seat functionality is incorrect check/renew the control module as necessary.
B1B9131	Seat Tilt Motor Speed/Position Sensor	Wiring circuit/connector issue Seat tilt motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat tilt motor. Repair/renew as necessary. If no circuit fault is found check/renew the seat tilt motor.
B1B913A	Seat Tilt Motor Speed/Position Sensor	Seat tilt moved beyond expected range Sensor circuit open or short circuit Seat adjustment range issue Seat tilt motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat tilt motor. Repair/renew as necessary. Check the seat adjustment ranges to ensure correct operation. Renew the seat tilt motor.
B1B9273	Seat Recline Motor Relay	Memory control module internal relay fault (stuck on)	Renew the seat memory control module. Refer to the warranty policy and procedures manual if a module is suspect.
B1B9293	Seat Recline Motor Relay	Software error Memory control module internal relay fault (inoperative)	If no customer complaint issue exists with seat operation, no action necessary, clear/ignore DTC. If seat functionality is incorrect check/renew the control module as necessary.
B1B9331	Seat Recline Motor Speed/Position Sensor	Wiring circuit/connector issue Seat recline motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat recline motor. Repair/renew as necessary. If no circuit fault is found check/renew the seat recline motor.
B1B933A	Seat Recline Motor Speed/Position Sensor	Seat recline moved beyond expected range Sensor circuit open or short circuit Seat adjustment range issue Seat recline motor speed/position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the seat recline motor. Repair/renew as necessary. Check the seat adjustment ranges to ensure correct operation. Renew the seat recline motor.
B1B9473	Seat Height Up Switch	Seat height up switch stuck Seat height up switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1B9573	Seat Height Down Switch	Seat height down switch stuck Seat height down switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1B9673	Seat Slide Forward Switch	Seat slide forward switch stuck Seat slide forward switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1B9773	Seat Slide Backward Switch	Seat slide backward switch stuck Seat slide backward switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1B9873	Seat Tilt Up Switch	Seat tilt up switch stuck Seat tilt up switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1B9973	Seat Tilt Down Switch	Seat tilt down switch stuck Seat tilt down switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0073	Seat Recline Up Switch	Seat recline up switch stuck Seat recline up switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0173	Seat Recline Down Switch	Seat recline down switch stuck Seat recline down switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0273	Memory Store Switch	Seat memory store switch stuck Seat memory store switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0373	Memory #1 Switch	Seat memory #1 switch stuck Seat memory #1 switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0473	Memory #2 Switch	Seat memory #2 switch stuck Seat memory #2 switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0573	Memory #3 Switch	Seat memory #3 switch stuck Seat memory #3 switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the seat switch pack for short to ground. Check the switch operation, renew as necessary.
B1C0601	Driver Up/Down And Common Mirror Motor Circuit	Mirror motor up/down circuit open or short circuit Mirror up/down motor failure	Refer to the electrical guides and check the circuit between the memory control module and the door mirror for open circuit or short to ground. Check the mirror operation, renew as necessary.
B1C0701	Driver Left/Right and Right-hand Up/Down Mirror Motor Circuit	Mirror motor left/right circuit open or short circuit Mirror left/right motor failure	Refer to the electrical guides and check the circuit between the memory control module and the door mirror for open circuit or short to ground. Check the mirror operation, renew as necessary.
B1C0801	Passenger Left/Right And Common Mirror Motor Circuit	Mirror motor left/right circuit open or short circuit Mirror left/right motor failure	Refer to the electrical guides and check the circuit between the memory control module and the door mirror for open circuit or short to ground. Check the mirror operation, renew as necessary.
B1C0973	Driver Left/Right Mirror Motor Circuit	Software error (DTC can be logged when the mirror is moved manually) Mirror motor left/right circuit open or short circuit Mirror left/right motor failure	If no customer complaint issue exists with mirror operation, no action necessary, clear/ignore DTC. If mirror functionality is incorrect, refer to the electrical guides and check the circuit for open of short to ground. Renew the mirror motor/mirror as necessary.
B1C1073	Driver Up/Down Mirror Motor Circuit	Software error (DTC can be logged when the mirror is moved manually) Mirror motor up/down circuit open or short circuit Mirror up/down motor failure	If no customer complaint issue exists with mirror operation, no action necessary, clear/ignore DTC. If mirror functionality is incorrect, refer to the electrical guides and check the circuit for open of short to ground. Renew the mirror motor/mirror as necessary.
B1C1173	Passenger Left/Right Mirror Motor Circuit	Software error (DTC can be logged when the mirror is moved manually) Mirror motor left/right circuit open or short circuit Mirror left/right motor failure	If no customer complaint issue exists with mirror operation, no action necessary, clear/ignore DTC. If mirror functionality is incorrect, refer to the electrical guides and check the circuit for open of short to ground. Renew the mirror motor/mirror as necessary.
B1C1273	Passenger Up/Down Mirror Motor Circuit	Software error (DTC can be logged when the mirror is moved manually) Mirror motor up/down circuit open or short circuit Mirror up/down motor failure	If no customer complaint issue exists with mirror operation, no action necessary, clear/ignore DTC. If mirror functionality is incorrect, refer to the electrical guides and check the circuit for open of short to ground. Renew the mirror motor/mirror as necessary.
B1C133A	Driver Up/Down Mirror Motor Feedback Circuit	Door mirror motor moved beyond expected range Sensor circuit open or short circuit Door mirror motor position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the mirror. Repair/renew as necessary. Check/renew the mirror motor/assembly.
B1C143A	Driver Left/Right Mirror Motor Feedback Circuit	Door mirror motor moved beyond expected range Sensor circuit open or short circuit Door mirror motor position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the mirror. Repair/renew as necessary. Check/renew the mirror motor/assembly.
B1C153A	Passenger Up/Down Mirror Motor Feedback Circuit	Door mirror motor moved beyond expected range Sensor circuit open or short circuit Door mirror motor position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the mirror. Repair/renew as necessary. Check/renew the mirror motor/assembly.
B1C163A	Passenger Left/Right Mirror Motor Feedback Circuit	Door mirror motor moved beyond expected range Sensor circuit open or short circuit Door mirror motor position sensor fault	Refer to the electrical guides and check the harness and connections between the seat memory module and the mirror. Repair/renew as necessary. Check/renew the mirror motor/assembly.
B1C1773	Driver Mirror Left Switch	Mirror left switch stuck Mirror left switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C1873	Driver Mirror Right Switch	Mirror right switch stuck Mirror right switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C1973	Driver Mirror Up Switch	Mirror up switch stuck Mirror up switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C2073	Driver Mirror Down Switch	Mirror down switch stuck Mirror down switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C2173	Passenger Mirror Left Switch	Mirror left switch stuck Mirror left switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C2273	Passenger Mirror Right Switch	Mirror right switch stuck Mirror right switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C2373	Passenger Mirror Up Switch	Mirror up switch stuck Mirror up switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C2473	Passenger Mirror Down Switch	Mirror down switch stuck Mirror down switch circuit short to ground	Refer to the electrical guides and check the wiring between the memory control module and the mirror switch pack for short to ground. Check the switch operation, renew as necessary.
B1C2593	Pedal Motor Relay	Software error (electric column/pedals not installed) Memory control module internal relay fault (stuck on)	Where an electric column/pedal adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column/pedal adjustment is installed, check/renew the control module as necessary.
B1C2573	Pedal Motor Relay	Software error (electric column/pedals not installed) Memory control module internal relay fault (inoperative)	Where an electric column/pedal adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column/pedal adjustment is installed, check/renew the control module as necessary.
B1C263A	Pedal Motor Feedback Circuit	Software error Door mirror motor moved beyond expected range Sensor circuit open or short circuit Door mirror motor position sensor fault	Where an electric column/pedal adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column/pedal adjustment is installed, refer to the electrical guides and check the harness and connections between the seat memory module and the pedal height motor. Repair/renew as necessary. If no circuit fault is found check/renew the pedal height motor.
B1C2773	Pedal In Switch	Software error (electric column/pedals not installed) Pedal switch fault (stuck closed)	Where an electric column/pedal adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column/pedal adjustment is installed, refer to the electrical guides and check the pedal out switch circuit for short or open circuit and check/renew the pedal in switch as necessary.
B1C2873	Pedal Out Switch	Software error (electric column/pedals not installed) Pedal switch fault (stuck closed)	Where an electric column/pedal adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column/pedal adjustment is installed, refer to the electrical guides and check the pedal out switch circuit for short or open circuit and check/renew the pedal out switch as necessary.
B1C3173	Steering Column Motor Relay	Software error (electric column not installed) Steering column motor relay fault (stuck on)	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column motor circuit for short or open circuit and check/renew the memory control module as necessary.
B1C3193	Steering Column Motor Relay	Software error (electric column not installed) Memory control module internal relay fault (inoperative)	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, check/renew the control module as necessary.
B1C3213	Steering Column Tilt Solenoid	Software error (electric column not installed) Steering column motor tilt solenoid open load	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt solenoid circuit for short or open circuit and check/renew the tilt solenoid as necessary.
B1C3296	Steering Column Tilt Solenoid	Software error (electric column not installed) Steering column motor tilt solenoid thermal overload	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt solenoid circuit for short or open circuit. Check for other relevant DTCs and repair as necessary. Allow the solenoid to cool, clear the DTC and check the solenoid/tilt function operation. If the DTC persists renew the tilt solenoid as necessary.
B1C333A	Steering Column Tilt Feedback Signal	Software error (electric column not installed) Steering column tilt motor moved beyond expected range Sensor circuit open or short circuit Motor position sensor fault	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt solenoid feedback circuit for short or open circuit. Check the solenoid/tilt function operation and range of movement. Renew the tilt solenoid as necessary.
B1C3413	Steering Column Telescopic Solenoid	Software error (electric column not installed) Steering column motor telescopic solenoid open load	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column telescopic solenoid circuit for short or open circuit and check/renew the tilt solenoid as necessary.
B1C3496	Steering Column Telescopic Solenoid	Software error (electric column not installed) Steering column motor telescopic solenoid thermal overload	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column telescopic solenoid circuit for short or open circuit. Check for other relevant DTCs and repair as necessary. Allow the solenoid to cool, clear the DTC and check the solenoid/telescopic function operation. If the DTC persists renew the telescopic solenoid as necessary.
B1C353A	Steering Column Telescopic Feedback Signal	Software error (electric column not installed) Steering column telescopic motor moved beyond expected range Sensor circuit open or short circuit Motor position sensor fault	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column telescopic solenoid feedback circuit for short or open circuit. Check the solenoid/telescopic function operation and range of movement. Renew the telescopic solenoid as necessary.
B1C363A	Steering Column Tilt/Telescope Switch	Software error (electric column not installed) Steering column tilt/telescopic switch voltage beyond expected range Sensor circuit open or short circuit Switch fault	Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt/telescopic switch circuit for short or open circuit. Check the tilt/telescopic switch operation and renew the switch as necessary.
B1C3723	Master Lock Switch Stuck	Master central lock switch signal circuit short circuit to ground Master central lock switch stuck/jammed Master central lock switch failure	Refer to the electrical guides and check the master switch lock circuit. Check the switch operation, renew as necessary.
B1C3823	Master Unlock Switch Stuck	Master central unlock switch signal circuit short circuit to ground Master central unlock switch stuck/jammed Master central unlock switch failure	Refer to the electrical guides and check the master switch unlock circuit. Check the switch operation, renew as necessary.
B1C3923	Key Lock Switch Stuck	Key lock switch stuck/jammed Key lock switch circuit short to ground (where connected) Key lock switch failure Internal CJB fault	Refer to the electrical guides and ensure there are no wires connected to the SJB connector on the key lock switch circuit. Clear the DTC and retest. If the DTC returns, suspect an internal fault with the CJB. If no other DTCs are present, ignore this fault.
B1C4023	Key Unlock Switch Stuck	Key unlock switch stuck/jammed Key unlock switch failure Key unlock switch circuit short to ground (where connected) Internal CJB fault	Refer to the electrical guides and ensure there are no wires connected to the SJB connector on the key unlock switch circuit. Clear the DTC and retest. If the DTC returns, suspect an internal fault with the CJB. If no other DTCs are present, ignore this fault.
B1C4123	Tailgate Release Switch #1	Tailgate SW1 (Switch-tail door open) release circuit short to ground Tailgate release switch stuck/jammed Tailgate release switch failure	Refer to the electrical guides and check the tailgate SW1 unlock circuit. Check the switch operation, renew as necessary.
B1C4223	Tailgate Release Switch #2	Tailgate glass release switch (SW2- number plate lamp and tail door switch) signal circuit short circuit to ground Tailgate glass release switch stuck/jammed Tailgate glass release switch failure	Refer to the electrical guides and check the tailgate SW2 unlock circuit. Check the switch operation, renew as necessary.
B1C4323	Master Interior Lamp Switch Stuck	Interior lamp circuit short to ground Interior lamp switch fault	Refer to the electrical guides and check the interior lamp circuit. Check the switch operation, renew as necessary.
B1C4467	Rear Wiper Park Position Switch Stuck	Incorrect software level (NNV502520) resulting in DTC log when engine is cranked or the tailgate is opened when the rear wiper is running Rear wiper park position circuit short to ground Rear wiper motor park switch fault	Ensure the software level is NNV502990 or later and update if necessary using the manufacturers recommended diagnostic equipment. Clear the DTC and retest. Refer to the electrical guides and check the rear wiper park position circuit. Clear the DTC and retest. If the DTC returns, suspect an internal fault with the rear wiper motor, check and renew as required.
B1C4567	Front Wiper Park Position Switch Stuck	Incorrect software level (NNV502520)resulting in DTC log when engine is cranked or the tailgate is opened when the front wiper is running Front wiper park position circuit short to ground Front wiper motor park switch fault	Ensure the software level is NNV502990 or later and update if necessary using the manufacturers recommended diagnostic equipment. Clear the DTC and retest. Refer to the electrical guides and check the front wiper park position circuit. Clear the DTC and retest. If the DTC returns, suspect an internal fault with the front wiper motor, check and renew as required.
B1C4623	Rear Washer Switch Stuck	Rear washer circuit short to ground Rear washer switch fault	Refer to the electrical guides and check the rear washer switch circuit. Check the switch operation, renew as necessary.
B1C4723	Front Washer Switch Stuck	Front washer circuit short to ground Front washer switch fault	Refer to the electrical guides and check the front washer switch circuit. Check the switch operation, renew as necessary.
B1C4823	Flash To Pass Switch Stuck	Flash to pass circuit short to ground Flash to pass switch fault	Refer to the electrical guides and check the flash to pass switch circuit. Check the switch operation, renew as necessary.
B1C5024	Ignition Switch Crank Position Stuck	Ignition switch crank position short circuit Ignition switch fault	Refer to the electrical guides and check the ignition switch circuit. Check the switch operation, renew as necessary.
B1C5329	Front Wiper Intermittent Data	Front wiper intermittent circuit short or open circuit Front wiper switch fault	Refer to the electrical guides and check the intermittent wiper switch circuit. Check the switch operation, renew as necessary.
B1C5512	Horn Relay	Horn relay coil circuit short to power	Refer to the electrical guides and check the horn relay circuit, repair as necessary.
B1C5514	Horn Relay	Horn relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the horn relay circuit, repair as necessary.
B1C5612	Horn Relay Output Circuit	Horn relay output circuit short to power	Refer to the electrical guides and check the horn relay, repair/renew as necessary.
B1C5614	Horn Relay Output Circuit	Horn relay output circuit short to ground or open circuit	Refer to the electrical guides and check the horn relay supply fuse and the horn relay circuit, repair as necessary.
B1C5712	Passive Start Ignition Relay Coil Circuit	Passive start ignition relay coil circuit short to power	No action necessary, clear/ignore DTC.
B1C5714	Passive Start Ignition Relay Coil Circuit	Passive start ignition relay output circuit short to ground or open circuit	No action necessary, clear/ignore DTC.
B1C5812	Power Windows Relay Coil Circuit	Power windows relay coil circuit short to power	Refer to the electrical guides and check the power windows relay circuit, repair/renew as necessary.
B1C5814	Power Windows Relay Coil Circuit	Power windows relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the power windows relay circuit, repair as necessary.
B1C5912	Power Windows Relay Output Circuit	Power windows relay output circuit short to power	Refer to the electrical guides and check the power windows relay output circuit, repair/renew as necessary.
B1C5914	Power Windows Relay Output Circuit	Power windows relay output circuit short to ground or open circuit	Refer to the electrical guides and check the power windows relay supply fuse, output circuit fuse and relay output circuit, repair as necessary.
B1C6012	Sidelights Relay Output Circuit	Side lamps relay output circuit short to power Rear tail/brake lamp bulb incorrect spec Rear tail/brake lamp bulb fault	A bulb fault can also cause DTC B1B0187 to be logged in the Body Control Module and DTC C1A5564 to be logged in the Park Brake Module. A fault in this circuit causing DTC B1C6012 to log could also cause up shift issues on automatic transmission vehicles. Check the rear tail/brake lamp bulbs for correct type, installation or faults including a short circuit of the bulb filaments. Refer to the electrical guides and check side lamps relay output circuit, repair/renew as necessary.
B1C6014	Sidelights Relay Output Circuit	Side lamps relay output circuit short to ground or open circuit	Refer to the electrical guides and check the Side lamps relay supply fuse, output circuit fuse and relay output circuit, repair as necessary.
B1C6112	Battery Saver Relay Coil Circuit	Battery saver relay coil circuit short to power	Refer to the electrical guides and check the battery saver relay circuit, repair/renew as necessary.
B1C6114	Battery Saver Relay Coil Circuit	Battery saver relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the power saver relay circuit, repair as necessary.
B1C6212	Battery Saver Relay Output Circuit	Battery saver relay output circuit short to power	Refer to the electrical guides and check the battery saver relay circuit, repair/renew as necessary.
B1C6214	Battery Saver Relay Output Circuit	Battery saver relay output circuit short to ground or open circuit	Refer to the electrical guides and check the battery saver relay supply fuse and relay output circuit, repair as necessary.
B1C6312	Driver Door Lock Relay Coil Circuit	Driver door lock relay coil circuit short to power Driver door lock relay failure	Refer to the electrical guides and check the driver door lock relay circuit, repair/renew as necessary.
B1C6314	Driver Door Lock Relay Coil Circuit	Driver door lock relay coil circuit short to ground or open circuit Driver door lock relay coil circuit high resistance Driver door lock relay failure	Refer to the electrical guides and check the driver door lock relay circuit, repair as necessary.
B1C6412	Driver Door Lock Relay Output Circuit	Driver door lock relay output circuit short to power Driver door lock relay failure	Refer to the electrical guides and check the driver door lock relay circuit, repair/renew as necessary.
B1C6414	Driver Door Lock Relay Output Circuit	Driver door lock relay output circuit short to ground or open circuit Driver door lock relay output circuit high resistance Driver door lock relay failure	Refer to the electrical guides and check the driver door lock relay output circuit, repair as necessary.
B1C6512	Lock Rest Relay Coil Circuit	CDL lock relay coil circuit short to power Central door locking relay failure	Refer to the electrical guides and check the CDL lock relay circuit, repair/renew as necessary.
B1C6514	Lock Rest Relay Coil Circuit	CDL lock rest relay coil circuit short to ground or open circuit Central door locking relay coil circuit high resistance Central door locking relay failure	Refer to the electrical guides and check the CDL lock relay circuit, repair as necessary.
B1C6612	Lock Rest Relay Output Circuit	CDL lock rest relay output circuit short to power Central door locking relay failure	Refer to the electrical guides and check the CDL lock relay circuit, repair/renew as necessary.
B1C6614	Lock Rest Relay Output Circuit	CDL lock rest relay output circuit short to ground or open circuit Central door locking relay output circuit high resistance Central door locking relay failure	Refer to the electrical guides and check the CDL lock relay output circuit, repair as necessary.
B1C6712	Driver Door Unlock Relay Coil Circuit	Driver door unlock relay coil circuit short to power Driver door unlock relay failure	Refer to the electrical guides and check the driver door unlock relay circuit, repair/renew as necessary.
B1C6714	Driver Door Unlock Relay Coil Circuit	Driver door unlock relay coil circuit short to ground or open circuit Driver door unlock relay coil circuit high resistance Driver door unlock relay failure	Refer to the electrical guides and check the driver door unlock relay circuit, repair as necessary.
B1C6812	Driver Door Unlock Relay Output Circuit	Driver door unlock relay output circuit short to power Driver door unlock relay failure	Refer to the electrical guides and check the driver door unlock relay circuit, repair/renew as necessary.
B1C6814	Driver Door Unlock Relay Output Circuit	Driver door unlock relay output circuit short to ground or open circuit Driver door unlock relay output circuit high resistance Driver door unlock relay failure	Refer to the electrical guides and check the driver door unlock rest relay output circuit, repair as necessary.
B1C6912	Passenger Door Unlock Relay Coil Circuit	Passenger door unlock relay coil circuit short to power Central door unlock relay failure	Refer to the electrical guides and check the passenger door unlock relay circuit, repair/renew as necessary.
B1C6914	Passenger Door Unlock Relay Coil Circuit	Central door unlock relay coil circuit short circuit to ground Central door unlock relay coil circuit high resistance Central door unlock relay failure	Refer to the electrical guides and check the passenger door unlock relay circuit, repair as necessary.
B1C7012	Passenger Door Unlock Relay Output Circuit	Central door unlock relay output circuit short circuit to power Central door unlock relay failure	Refer to the electrical guides and check the passenger door unlock relay circuit, repair/renew as necessary.
B1C7014	Passenger Door Unlock Relay Output Circuit	Central door unlock relay output circuit short circuit to ground Central door unlock relay output circuit high resistance Central door unlock relay failure	Refer to the electrical guides and check the passenger door unlock rest relay output circuit, repair as necessary.
B1C7312	Superlock Relay Coil Circuit	Superlock relay coil circuit short circuit to power Superlock relay failure	Where installed, refer to the electrical guides and check the superlock relay circuit, repair/renew as necessary.
B1C7314	Superlock Relay Coil Circuit	Superlock relay coil circuit short circuit to ground Superlock relay coil circuit high resistance Superlock relay failure	Where installed, refer to the electrical guides and check the superlock relay circuit, repair as necessary.
B1C7412	Superlock Relay Output Circuit	Superlock relay output circuit short circuit to power Superlock relay failure	Where feature is installed, refer to the electrical guides and check the superlock relay circuit, repair/renew as necessary.
B1C7414	Superlock Relay Output Circuit	Superlock relay output circuit short circuit to ground Superlock relay output circuit high resistance Superlock relay failure	Where feature is installed, refer to the electrical guides and check the superlock relay output circuit, repair as necessary.
B1C7612	Front Wiper Fast Relay Coil Circuit	Front wiper fast relay coil circuit short to power	Refer to the electrical guides and check the front wiper fast relay circuit, repair/renew as necessary.
B1C7614	Front Wiper Fast Relay Coil Circuit	Front wiper fast relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the front wiper fast relay circuit, repair as necessary.
B1C7712	Rear Wiper Fast Relay Coil Circuit	Rear wiper fast relay coil circuit short to power	Refer to the electrical guides and check the rear wiper fast relay circuit, repair/renew as necessary.
B1C7714	Rear Wiper Fast Relay Coil Circuit	Rear wiper fast relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the rear wiper fast relay circuit, repair as necessary.
B1C7812	Powerwash Relay Coil Circuit	Front washer pump/powerwash relay coil circuit short to power	Refer to the electrical guides and check the relevant washer pump relay circuit, repair as necessary.
B1C7814	Powerwash Relay Coil Circuit	Front washer pump/powerwash relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the relevant washer pump relay circuit, repair as necessary.
B1C7912	Front Washer Pump Relay Output Circuit	Front washer pump relay output circuit short to power	Refer to the electrical guides and check the front washer pump relay circuit, repair/renew as necessary.
B1C7914	Front Washer Pump Relay Output Circuit	Front washer pump relay output circuit short to ground or open circuit	Refer to the electrical guides and check the front washer pump relay supply fuse and the relay output circuit, repair as necessary.
B1C8012	Rear Washer Pump Relay Coil Circuit	Rear washer pump relay coil circuit short to power	Refer to the electrical guides and check the rear washer pump relay circuit, repair as necessary.
B1C8014	Rear Washer Pump Relay Coil Circuit	Rear washer pump relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the rear washer pump relay circuit, repair as necessary.
B1C8112	Rear Washer Pump Relay Output Circuit	Rear washer pump relay output circuit short to power	Refer to the electrical guides and check the rear washer pump relay circuit, repair/renew as necessary.
B1C8114	Rear Washer Pump Relay Output Circuit	Rear washer pump relay output circuit short to ground or open circuit	Refer to the electrical guides and check the rear washer pump relay supply fuse and the relay output circuit, repair as necessary.
B1C8212	Headlamp Washer Relay A	Headlamp washer relay output circuit short to power	Where feature is installed, refer to the electrical guides and check the headlamp pump relay circuit, repair as necessary.
B1C8214	Headlamp Washer Relay A	Headlamp washer relay output circuit short to power	Where feature is installed, refer to the electrical guides and check the headlamp pump relay circuit, repair/renew as necessary.
B1C8312	Heated Rear Window Relay Coil Circuit	Heated rear window relay coil circuit short to power	Refer to the electrical guides and check the heated rear window relay circuit, repair as necessary.
B1C8314	Heated Rear Window Relay Coil Circuit	Heated rear window relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the heated rear window relay circuit, repair as necessary.
B1C8412	Heated Rear Window Relay Output Circuit	Heated rear window relay output circuit short to power	Refer to the electrical guides and check the heated rear window relay circuit, repair/renew as necessary.
B1C8414	Heated Rear Window Relay Output Circuit	Heated rear window relay output circuit short to ground or open circuit	Refer to the electrical guides and check the heated rear window relay supply fuse and the relay output circuit, repair as necessary.
B1C8512	Autolamps Switch Illumination Relay Coil Circuit	Autolamps switch illumination relay coil circuit short to power	Where installed, refer to the electrical guides and check the autolamps switch illumination relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C8514	Autolamps Switch Illumination Relay Coil Circuit	Autolamps switch illumination relay coil circuit short to ground or open circuit	Where installed, refer to the electrical guides and check the autolamps switch illumination relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C8612	Autolamps Switch Illumination Relay Output Circuit	Autolamps switch illumination relay output circuit short to power	Where installed, refer to the electrical guides and check the autolamps switch illumination relay circuit, repair/renew as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C8614	Autolamps Switch Illumination Relay Output Circuit	Autolamps switch illumination relay output circuit short to ground or open circuit	Where installed, refer to the electrical guides and check the autolamps switch illumination relay supply fuse and the relay output circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C8812	Reversing Lamps Relay Coil Circuit	Reversing lamps relay coil circuit short to power	Refer to the electrical guides and check the reversing lamps relay circuit, repair as necessary.
B1C8814	Reversing Lamps Relay Coil Circuit	Reversing lamps relay coil circuit short to ground or open circuit	Refer to the electrical guides and check the reversing lamps relay circuit, repair as necessary.
B1C8912	Auxiliary Driving Lamps Relay Output Circuit	Auxiliary driving lamps relay output circuit short to power	Where installed, refer to the electrical guides and check the Auxiliary driving lamps relay circuit, repair/renew as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C8914	Auxiliary Driving Lamps Relay Output Circuit	Auxiliary driving lamps relay output circuit short to ground or open circuit	Where installed, refer to the electrical guides and check the Auxiliary driving lamps relay output circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9012	Auxiliary Driving Lamps Relay Coil Circuit	Auxiliary driving lamps relay coil circuit short to power	Where installed, refer to the electrical guides and check the Auxiliary driving lamps relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9014	Auxiliary Driving Lamps Relay Coil Circuit	Auxiliary driving lamps relay coil circuit short to ground or open circuit	Where installed, refer to the electrical guides and check the Auxiliary driving lamps relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9112	Fuel Flap Lock Relay Coil Circuit	Fuel flap lock relay coil circuit short circuit to power Fuel flap lock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door lock relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9114	Fuel Flap Lock Relay Coil Circuit	Fuel flap lock relay coil circuit short circuit to ground Fuel flap lock relay coil circuit high resistance Fuel flap lock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door lock relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9212	Fuel Flap Lock Relay Output Circuit	Fuel flap lock relay output circuit short circuit to power Fuel flap lock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door lock relay circuit, repair/renew as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9214	Fuel Flap Lock Relay Output Circuit	Fuel flap lock relay output circuit short circuit to ground Fuel flap lock relay output circuit high resistance Fuel flap lock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door lock relay supply fuse and the relay output circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9312	Fuel Flap Unlock Relay Coil Circuit	Fuel flap unlock relay coil circuit short circuit to power Fuel flap unlock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door unlock relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9314	Fuel Flap Unlock Relay Coil Circuit	Fuel flap unlock relay coil circuit short circuit to ground Fuel flap unlock relay coil circuit high resistance Fuel flap unlock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door unlock relay circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9412	Fuel Flap Unlock Relay Output Circuit	Fuel flap unlock relay output circuit short circuit to power Fuel flap unlock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door unlock relay circuit, repair/renew as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9414	Fuel Flap Unlock Relay Output Circuit	Fuel flap unlock relay output circuit short circuit to ground Fuel flap unlock relay output circuit high resistance Fuel flap unlock relay failure	Where installed, refer to the electrical guides and check the fuel flap/door unlock relay supply fuse and the relay output circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9511	Approach Lamps Circuit	Approach lamps circuit short to ground, overload or over-temperature	Where installed, refer to the electrical guides and check the approach lamps circuit and repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9515	Approach Lamps Circuit	Approach lamps circuit short circuit to power or open load	Where installed, refer to the electrical guides and check the approach lamps circuit and repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9611	Alarm LED	Alarm LED circuit short to ground or over-temperature	Where volumetric alarm feature is installed, refer to the electrical guides and check the alarm LED circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9615	Alarm LED	Alarm LED circuit short circuit to power or open load	Where volumetric alarm feature is installed, refer to the electrical guides and check the alarm LED circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9811	Left Corner Lamp Circuit	Left corner lamp circuit short to ground, overload or over-temperature	Where corner lamps are installed, refer to the electrical guides and check the left-hand circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9815	Left Corner Lamp Circuit	Left corner lamp circuit short circuit to power or open load	Where corner lamps are installed, refer to the electrical guides and check the left-hand circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9911	Right Corner Lamp Circuit	Right corner lamp circuit short to ground, overload or over-temperature	Where corner lamps are installed, refer to the electrical guides and check the right-hand circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1C9915	Right Corner Lamp Circuit	Right corner lamp circuit short circuit to power or open load	Where corner lamps are installed, refer to the electrical guides and check the right-hand circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1D0011	Left Low Beam	Left low beam lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0015	Left Low Beam	Left low beam lamp circuit short circuit to power or open load	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0111	Right Low Beam	Right low beam lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0115	Right Low Beam	Right low beam lamp circuit short circuit to power or open load	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0211	Left High Beam Circuit	Left high beam lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0215	Left High Beam Circuit	Left high beam lamp circuit short circuit to power or open load	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0311	Right High Beam Circuit	Right high beam lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0315	Right High Beam Circuit	Right high beam lamp circuit short circuit to power or open load	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0414	Upper Tailgate Release Circuit	Tailgate glass release actuator operated more than 10 times within 1 minute Tailgate glass release actuator circuit high resistance Tailgate glass release actuator failure	Refer to the electrical guides and check the tailgate release circuit, repair as necessary.
B1D0511	Lower Tailgate Release Circuit	Tailgate release actuator operated more than 10 times within 1 minute Tailgate release actuator circuit short circuit to ground Tailgate release actuator failure	Refer to the electrical guides and check the tailgate circuit, repair as necessary.
B1D0515	Lower Tailgate Release Circuit	Tailgate release actuator circuit short circuit to power Tailgate release actuator circuit high resistance Tailgate release actuator failure	If no customer complaint issue exists with tailgate operation, no action necessary, clear/ignore DTC. If tailgate functionality is incorrect, refer to the electrical guides and check the tailgate circuit, repair as necessary.
B1D0611	Left Turn Indicator	Left turn indicator lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0615	Left Turn Indicator	Left turn indicator lamp circuit short circuit to power or open load	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0711	Right Turn Indicator	Right turn indicator lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0715	Right Turn Indicator	Right turn indicator lamp circuit short circuit to power or open load	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0811	Left-Hand Trailer Indicator Circuit	Left-hand trailer indicator lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0815	Left-Hand Trailer Indicator Circuit	Left-hand trailer indicator lamp circuit short circuit to power or open load	Refer to the electrical guides and check the left-hand circuit, repair as necessary.
B1D0911	Right-Hand Trailer Indicator Circuit	Right-hand trailer indicator lamp circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D0915	Right-Hand Trailer Indicator Circuit	Right-hand trailer indicator lamp circuit short circuit to power or open load	Refer to the electrical guides and check the right-hand circuit, repair as necessary.
B1D1011	Air Suspension Control Circuit	Air suspension control circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the circuit, repair as necessary.
B1D1015	Air Suspension Control Circuit	Air suspension control circuit short circuit to power or open load	Refer to the electrical guides and check the circuit, repair as necessary.
B1D1211	Volumetric Alarm Power Circuit	Volumetric alarm power circuit short to ground, overload or over-temperature	Refer to the electrical guides and check the circuit, repair as necessary.
B1D1215	Volumetric Alarm Power Circuit	Volumetric alarm power circuit short circuit to power or open load	Where volumetric alarm feature is installed, refer to the electrical guides and check the circuit, repair as necessary. Where the feature is not installed, check the vehicle configuration and clear/ignore this DTC.
B1D1311	Interior lamps circuit A	Interior lamps circuit A short to ground, overload or over-temperature	Refer to the electrical guides and check the circuit, repair as necessary.
B1D1315	Interior Lamps Circuit A	Software error Interior lamps circuit A short circuit to power or open load	If no customer complaint issue exists with interior lamp operation, no action necessary, clear/ignore DTC. If interior lamp functionality is incorrect, refer to the electrical guides and check the circuit, repair as necessary.
B1D1411	Interior Lamps Circuit B	Interior lamps circuit B short to ground, overload or over-temperature	Refer to the electrical guides and check the circuit, repair as necessary.
B1D1415	Interior Lamps Circuit B	Software error Interior lamps circuit B short circuit to power or open load	If no customer complaint issue exists with interior lamp operation, no action necessary, clear/ignore DTC. If interior lamp functionality is incorrect, refer to the electrical guides and check the circuit, repair as necessary.
B1D1512	Global Open/Close Circuit	Global open/close circuit short to power	Refer to the electrical guides and check the circuit, repair as necessary.
B1D1749	Battery Backed Sounder (BBUS)	BBUS siren communication fault	BBUS is not installed to all variants (optional). Fault logging is inhibited by the CCF, but incorrect CCF configuration could give erroneous DTC logging. Repair action only required for vehicles installed with BBUS.
B1D1787	Battery Backed Sounder (BBUS)	Lost communication with BBUS	BBUS is not installed to all variants (optional). Fault logging is inhibited by the CCF, but incorrect CCF configuration could give erroneous DTC logging. Repair action only required for vehicles installed with BBUS.
B1D1887	Volumetric Sensor	Volumetric Sensor failed to respond: Response pulse not received correctly	The volumetric sensor is not installed to all variants (optional). Fault logging is inhibited by the CCF, but incorrect CCF configuration could give erroneous DTC logging. Repair action only required for vehicles installed with volumetric sensor.
B1D3523	Hazard Switch Stuck	Hazard switch circuit short to ground Hazard switch fault	Check the hazard switch operation, refer to the electrical guides and check the hazard switch circuit. Repair/renew as necessary.
B1D3613	Turn Indicator Switch	Indicator switch connection open circuit	Refer to the electrical guides and check the switch circuit, repair/renew as necessary.
B1D3713	Wiper Switch Connection Circuit	Wiper switch connection circuit open circuit	Refer to the electrical guides and check the switch circuit, repair/renew as necessary.
B1D3813	Front Wiper Motor	Front wiper motor circuit open circuit	Refer to the electrical guides and check the wiper circuit, repair/renew as necessary.
B1D3913	Rear Wiper Motor	Rear wiper motor circuit open circuit	Refer to the electrical guides and check the wiper circuit, repair/renew as necessary.
B1D4013	Lighting Switch Connection Circuit	Lighting switch connection circuit open circuit	Refer to the electrical guides and check the switch circuit, repair/renew as necessary.
B1D4113	Bonnet Switch Connection Circuit	Hood ajar switch circuit high resistance Hood ajar switch failure	Refer to the electrical guides and check the switch circuit, repair/renew as necessary.
B1D4213	Driver Door Latch Connection Circuit	Driver door ajar switch circuit high resistance Driver door ajar switch failure	Refer to the electrical guides and check the latch circuit, repair/renew as necessary.
B1D4313	Passenger Door Latch Connection Circuit	Front passenger door ajar switch circuit high resistance Front passenger door ajar switch failure	Refer to the electrical guides and check the latch circuit, repair/renew as necessary.
B1D4413	Rear Left Door Latch Connection Circuit	Left-hand rear door ajar switch circuit high resistance Left-hand rear door ajar switch failure	Refer to the electrical guides and check the latch circuit, repair/renew as necessary.
B1D4513	Rear Right Door Latch Connection Circuit	Right-hand rear door ajar switch circuit high resistance Right-hand rear door ajar switch failure	Refer to the electrical guides and check the latch circuit, repair/renew as necessary.
B1D4613	Tailgate Latch Connection Circuit	Tailgate ajar switch circuit high resistance Tailgate ajar switch failure	Refer to the electrical guides and check the latch circuit, repair/renew as necessary.
B1D9749	Tilt Sensor	Lost communication with tilt sensor	BBUS (including the tilt sensor) is not installed to all variants (optional). Fault logging is inhibited by the CCF, but incorrect CCF configuration could give erroneous DTC logging. Repair action only required for vehicles installed with BBUS that are exhibiting incorrect tilt sensor behaviour.
U007388	Control Module Communication BUS A Off	Bus off. The CJB has detected the data bus is not available CAN bus open circuit CAN bus short circuit to ground CAN bus short circuit to power CJB module, connector damage, cavity pin damage	Refer to the electrical guides, check CAN circuit for open circuit, short to ground, short to power, repair/renew as necessary. Check the CJB for damage to the connector cavity pins, replace CJB as necessary.
U015587	Lost Communication With The IPK	Missing message. The CJB has not received one or more expected messages from the instrument cluster Open circuit instrument cluster, powerfeed Open circuit instrument cluster, ground supply	Using the manufacturer approved diagnostic system, check instrument cluster for DTCs and refer to the relevant DTC Index. Using the manufacturer approved diagnostic system, carry out network integrity test. Refer to the electrical guides, check power feeds and ground supplies, to instrument cluster for open circuit. Check CAN harness to instrument cluster, repair as necessary.
U016487	Lost Communication With The ATC Module	Missing message. The CJB has not received one or more expected messages from the auxiliary heater control module Open circuit auxiliary heater control module, powerfeed Open circuit auxiliary heater control module, ground supply	Using the manufacturer approved diagnostic system, check auxiliary heater control module for DTCs and refer to the relevant DTC Index. Using the manufacturer approved diagnostic system, carry out network integrity test. Refer to the electrical guides, check power feeds and ground supplies, to auxiliary heater control module for open circuit. Check CAN harness to auxiliary heater control module, repair as necessary.
U030055	Internal Control Module Software Incompatibility	Not configured. The CJB module has failed to recognise the correct master configuration ID from the CAN data bus master, the instrument cluster CJB not correctly configured Instrument cluster not correctly configured	Using the manufacturer approved diagnostic system, check the vehicle configuration file, rectify as necessary. Check correct software version is installed to both CJB and instrument cluster, update as necessary.
U1A0387	Car Config Parameter	Missing message. The CJB has not received one or more expected messages from the instrument cluster The CAN message that contains the car configuration parameters is not received by the CJB	Using the manufacturer approved diagnostic system, check the vehicle configuration file, rectify as necessary. Check correct software version is installed to both CJB and instrument cluster, update as necessary.
U1A1449	CAN Initialization Failure	Internal electronic failure. The CJB has indicated the detection of an internal circuit failure The CAN controller initialisation has failed CJB internal failure	Using the manufacturer approved diagnostic system, check correct software version is installed to CJB. Suspect the CJB, check and install a new CJB as required, refer to the new module/component installation note at the top of the DTC Index.
U200168	Reduced System Function	Event information. System event not caused by the CJB, but requiring the CJB to record this DTC. The CJB has measured a voltage greater than 16.8 volts for a time > than 30 seconds The CJB has measured a voltage less than 8.6 volts for a time > than 30 seconds Another feature of the vehicle is not working as expected Vehicle charging system failure Vehicle battery failure	Using the manufacturer approved diagnostic system, check the rest of the vehicle modules for DTC's. Check if the customer has complained of something not working as expected. Refer to the relevant section of the workshop manual and check vehicle charging system and battery.

Published: 11-May-2011

2007.0 Range Rover Sport (LS), 418-00

Module Communications Network

Communications Network (G830885)

CAN Network Integrity Checks

Media oriented systems transport (MOST) diagnosis

Central Junction Box (CJB)