Published: 11-May-2011

2007.0 Range Rover Sport (LS), 206-05

Parking Brake and Actuation

Parking Brake (G553462)

DIAGNOSIS AND TESTING
Overview

Please note this is a sealed unit and no attempt must be made to open the actuator as it will invalidate the warranty claim.

For information on the operation of the system, refer to the relevant section of the workshop manual.

Inspection and Verification
  1. Verify the customer concern.
  1. Visually inspect for obvious mechanical or electrical faults.

Visual Inspection

Mechanical Electrical
  • Parking brake cable(s) condition and installation
  • Parking brake shoes condition and installation
  • Parking brake drums (integrated into rear brake discs)
  • Parking brake actuator module condition and installation
  • Parking brake indicators
  • Fuses
    • Fuse box - engine compartment - fuse 11E
    • Fuse box - engine compartment - fuse 8E
    • Fuse box - passenger compartment - fuse 40P
    • Fuse box - passenger compartment - fuse 41P
  • Wiring harness/electrical connectors
    • Check for bent/corroded pins
  • Controller area network (CAN) circuits
  • Parking brake switch
  • Parking brake actuator module
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. Use the approved diagnostic system or a scan tool to retrieve any DTCs before moving onto the symptom chart or DTC index.
      • Make sure that all DTCs are cleared following rectification.
Symptom Chart
SymptomPossible causesAction
Parking brake will not engage or release
  • Parking brake cables fouled, trapped or damaged
  • Parking brake cables incorrectly routed or fixed
  • Parking brake shoes, linings worn/contaminated
  • Parking brake drums (integrated into rear brake discs)
  • Parking brake shoes incorrectly adjusted following replacement
  • Parking brake actuator module malfunction
Check the parking brake cables for fouling, trapping or damage. Check the cables for correct routing. Check that the cable end fitting connector(s) are correctly installed to the operating lever(s). Inspect the parking brake shoes and drums for condition/wear/contamination. Check the parking brake shoes for correct adjustment. REFER to: Parking Brake Shoe and Lining Adjustment (206-05 Parking Brake and Actuation, General Procedures). Check the operation of the parking brake actuator module, check for damage and/or excessive noise during operation. Check for parking brake actuator module DTCs.
Low parking brake efficiency/parking brake sticking/binding
DTC Index
NOTES:

  • Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

  • Intermittent faults may cause DTCs to be logged, however some DTCs may be cleared during an ignition off, ignition on cycle. Carry out a road test (if safe to do so), check the functionality of the system and retrieve any DTCs before turning the ignition off.

Brake Bedding Mode

Bedding mode is a special mode available in the parking brake module (PBM) that disables the stability assist system (ABS) and allows the parking brake to provide the braking force rather than the conventional braking system whilst the vehicle is moving at a velocity of >3kph. This mode is entered via a series of brake pedal presses and switch applications, full details on this procedure is available in the relevant section of the workshop manual. If brake bedding mode is entered accidentally by the driver the RED warning lamp will flash in the Instrument Pack, the module will return to normal operational mode when the ignition has been cycled. This DTC (C110468) is intended to highlight the fact that although the RED lamp was illuminated there was no fault present in the control module.

NOTE:

Where reference is made to a drive cycle test, refer to the descriptions at the end of the table.

DTCDescriptionPossible causesAction
C110468Brake Bedding Mode
  • Event information
  • Brake bedding mode has been entered
This is not a fault. This is where the parking brake bedding-in mode has been activated. For information on how the bedding-in mode is activated and deactivated, REFER to: Parking Brake Shoes Bedding-In (206-05 Parking Brake and Actuation, General Procedures).
C1A0000Control Module
  • Parking brake actuator module fault
 Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A0016Control Module
  • Battery voltage below 8.3V at parking brake actuator module
  • Charging system under charging
  • Parking brake actuator module supply circuit short circuit to ground
  • Parking brake actuator module supply circuit open circuit
  • Parking brake actuator module ground circuit short circuit to power
  • Parking brake actuator module ground circuit open circuit
Check the charging system, charging voltage and battery condition. Check the parking brake actuator power and ground circuits. Refer to the electrical guides. Clear DTCs, complete drive cycle 3 to test for normal operation, refer to the relevant drive cycle shown below this table.
C1A0017Control Module
  • Vehicle started using a booster pack
  • Battery voltage at parking brake actuator module has been greater than 17V
  • Charging system over charging
  • Parking brake actuator module supply circuit short circuit to power
Check the charging system and charging voltage. Check the parking brake actuator power circuits. Refer to the electrical guides. Clear DTCs, complete drive cycle 3 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A004BControl module
NOTE:

This is not a fault.

  • Parking brake actuator module temperature protection invoked, typically due to over-use where there have been more than 15 apply and release cycles continuously
 If the red parking brake warning indicator flashes the fault is the result of short term protection (message displayed). Allow the parking brake to cool for 60 seconds and retest for functionality. If the parking brake does not apply, check for other DTCs. Rectify as necessary. Clear DTCs, complete drive cycle 3 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4001Longitudinal Acceleration Sensor
NOTE:

The longitudinal acceleration sensor is part of the parking brake actuator module

  • Longitudinal acceleration sensor fault
 Clear DTCs and check if the fault reoccurs when the vehicle is stationary. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4002Longitudinal Acceleration Sensor
NOTE:

The longitudinal acceleration sensor is part of the parking brake actuator module

  • Longitudinal acceleration sensor plausibility failure
Clear DTCs and check if the fault reoccurs when the vehicle is stationary. Calibrate the longitudinal acceleration sensor. To calibrate the sensor make sure the vehicle is on a level surface and run the calibration routine from the configuration menu of the approved diagnostic system. If calibration was not successful check that the parking brake actuator module is correctly installed. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 2 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4054Longitudinal Acceleration Sensor
NOTE:

The longitudinal acceleration sensor is part of the parking brake actuator module

  • Longitudinal acceleration sensor not calibrated
Clear DTCs and calibrate the longitudinal acceleration sensor. To calibrate the sensor make sure the vehicle is on a level surface and run the calibration routine from the configuration menu of the approved diagnostic system. Retest for functionality. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4101Clutch Pedal Sensor
  • Clutch pedal sensor electrical error
Refer to the electrical guides and check the electrical circuit between the PBM and clutch position sensor, repair/renew as necessary.
C1A4102Clutch Pedal Sensor
  • Clutch pedal sensor circuit error
Refer to the electrical guides and check the electrical circuit between the PBM and clutch position sensor, repair/renew as necessary.
C1A4300Motor Supply
NOTE:

The electric motor is part of the parking brake actuator module

  • Brake cables loose/broken/damaged
  • Brake shoes worn/damaged
  • Electric motor jammed
Check that the brake cables are connected correctly and are not loose/damaged. If the cables need to be re-connected use the approved diagnostic system to drive the cables to the "mount" position so that maximum cable length is available. Check the parking brake shoes adjustment and condition, REFER to: Parking Brake Shoe and Lining Adjustment (206-05 Parking Brake and Actuation, General Procedures) / Brake Disc (206-04 Rear Disc Brake, Removal and Installation) / Parking Brake Shoes (206-05 Parking Brake and Actuation, Removal and Installation).If the parking brake actuator module is stuck, re-cycle the ignition. If the parking brake actuator module cannot be operated from the switch then use the approved diagnostic system to drive the parking brake actuator module using the 'unjam' application in the set-up and configuration menu. Retest for functionality. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4301Motor Supply
NOTE:

The electric motor is part of the parking brake actuator module

  • Internal motor circuit fault
 Clear DTCs, complete drive cycle 3 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4662Mismatch Between Motor Drive Current and Resultant Force
  • Parking brake cables fouled, trapped or damaged
  • Parking brake shoes, linings worn
  • Parking brake shoes incorrectly adjusted following replacement
  • Parking brake actuator module circuit short circuit to ground, short circuit to power, high resistance
  • Parking brake actuator module fault
Check the parking brake cables for fouling, trapping or damage. Check the parking brake shoes for correct adjustment, REFER to: Parking Brake Shoe and Lining Adjustment (206-05 Parking Brake and Actuation, General Procedures). Inspect the parking brake shoes for excessive wear. REFER to: Brake Disc (206-04 Rear Disc Brake, Removal and Installation) / Parking Brake Shoes (206-05 Parking Brake and Actuation, Removal and Installation).Check the parking brake actuator module circuits. Refer to the electrical guides. Clear the DTC and retest. If the problem persists, renew the control module. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4701Force Sensor
NOTE:

The force sensor is part of the parking brake actuator module

  • Internal force sensor electrical fault
Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4702Force Sensor
NOTE:

The force sensor is part of the parking brake actuator module

  • Internal force sensor plausibility failure
Clear DTCs, complete drive cycle 3 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4754Force Sensor
NOTE:

The force sensor is part of the parking brake actuator module

  • Internal force sensor not calibrated
Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
C1A4801Warning Lamp
  • Parking brake actuator module to instrument cluster warning lamp circuit open circuit
  • Parking brake actuator module to instrument cluster warning lamp circuit short circuit to ground
  • Parking brake actuator module to instrument cluster warning lamp circuit short circuit to power
  • Parking brake actuator module fault
  • Instrument cluster fault
Check the parking brake actuator module to instrument cluster warning lamp circuit. Refer to the electrical guides. Rectify as necessary. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
C1A5368Manual Emergency Release Activated
  • Emergency release cable activated and stuck/damaged
  • Parking brake cables seized/damaged
  • Actuator jammed
Check that the emergency release cable is not permanently pulled (or stuck). Check the parking brake cables for broken or loose connections. Attempt to re-engage the parking brake by pulling the apply switch TWICE. Clear DTCs, complete the following drive cycle. Pull the parking brake emergency release cable. Pull the parking brake switch to the apply position, hold until the parking brake motor has stopped (this may take up to 20 seconds). Release the switch to idle position. For parking brake actuator module manual emergency release REFER to: Parking Brake (206-05 Parking Brake and Actuation, Description and Operation).
C1A5564Ignition Switch Input Circuit
  • Parking brake actuator module ignition supply circuits short circuit to ground, short circuit to power, high resistance
  • Parking brake actuator module key in supply circuit short circuit to ground, short circuit to power, high resistance
  • Ignition switch fault
  • 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 the parking brake actuator module ignition and key in circuits. Refer to the electrical guides. Rectify as necessary. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
U007388Control Module Communication Bus "A" Off
  • Controller area network (CAN) circuit open circuit
  • CAN circuit short circuit to each other
  • CAN circuit short circuit to power
  • CAN circuit short circuit to earth
  • Parking brake actuator module fault
Carry out a complete vehicle read for DTCs indicating a CAN or module fault. Check the CAN circuits. Rectify as necessary. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
U010087Lost Communication With ECM/PCM "A"
  • Invalid data transmitted by ECM
  • Controller area network (CAN) circuit open circuit
  • CAN circuit short circuit to each other
  • CAN circuit short circuit to power
  • CAN circuit short circuit to earth
  • ECM fault
  • CAN control module fault
Carry out a complete vehicle read for DTCs indicating a CAN or module fault. Lost communication codes indicate that a module is not receiving CAN information from another module, but that its own transmissions are OK. Check for related "invalid data" DTCs in other modules and other ECM DTCs. Rectify as necessary. Clear DTCs, complete drive cycle 1 to test for normal operation. If DTC is still present after clear down carry out a network integrity test. Review the DTCs to identify any trends such as a number of modules reporting having lost communication with a particular module. Rectify as necessary. Refer to the network communications section of the workshop manual. This DTC may occur after/during cranking if battery capacity is low. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation.
U010187Lost Communication with TCM
  • Invalid data transmitted by TCM
  • Invalid data transmitted by transfer box control module
  • Controller area network (CAN) circuit open circuit
  • CAN circuit short circuit to each other
  • CAN circuit short circuit to power
  • CAN circuit short circuit to earth
  • TCM fault
  • Transfer box control module fault
  • CAN control module fault
Carry out a complete vehicle read for DTCs indicating a CAN or module fault. Lost communication codes indicate that a module is not receiving CAN information from another module, but that its own transmissions are OK. Check for related "invalid data" DTCs in other modules and other TCM or transfer box control module DTCs. Rectify as necessary. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. If DTC is still present after clear down and test carry out a network integrity test. Review the DTCs to identify any trends such as a number of modules reporting having lost communication with a particular module. Rectify as necessary. This DTC may occur after/during cranking if battery capacity is low. Refer to the network communications section of the workshop manual. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
U012287Lost Communication With Vehicle Dynamics Control Module
  • Invalid data transmitted by vehicle dynamics control module
  • Controller area network (CAN) circuit open circuit
  • CAN circuit short circuit to each other
  • CAN circuit short circuit to power
  • CAN circuit short circuit to earth
  • Vehicle dynamics control module fault
  • CAN control module fault
Carry out a complete vehicle read for DTCs indicating a CAN or module fault. Lost communication codes indicate that a module is not receiving CAN information from another module, but that its own transmissions are OK. Check for related "invalid data" DTCs in other modules and other dynamic control module DTCs. Rectify as necessary. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. If DTC resets carry out a network integrity test. Review the DTCs to identify any trends such as a number of modules reporting having lost communication with a particular module. Rectify as necessary. This DTC may occur after/during cranking if battery capacity is low. Refer to the network communications section of the workshop manual. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
U015587Lost Communication With Instrument Panel Cluster (IPC) Control Module
  • Invalid data transmitted by instrument cluster
  • Controller area network (CAN) circuit open circuit
  • CAN circuit short circuit to each other
  • CAN circuit short circuit to power
  • Instrument cluster fault
  • CAN control module fault
Carry out a complete vehicle read for DTCs indicating a CAN or module fault. Lost communication codes indicate that a module is not receiving CAN information from another module, but that its own transmissions are OK. Check for related "invalid data" DTCs in other modules and other instrument cluster DTCs. Rectify as necessary. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. If DTC resets carry out a network integrity test. Review the DTCs to identify any trends such as a number of modules reporting having lost communication with a particular module. Rectify as necessary. This DTC may occur after/during cranking if battery capacity is low. Refer to the network communications section of the workshop manual. Refer to the warranty policy and procedures manual if a module is suspect. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
U030055Internal Control Module Software Incompatibility
  • Parking brake module configuration does not match vehicle configuration
  • Parking brake actuator module fault
 Check that the correct module is installed to the vehicle. Check that the car configuration file (CCF) is being used. Configure the module(s) using the approved diagnostic system.
U1A0300Car Config Parameter
  • Parking brake module configuration does not match vehicle configuration
  • Wrong vehicle car configuration file (CCF)
 Check for other communication/invalid data DTC's. Rectify as necessary. Check that the correct module is installed to the vehicle. Check if the correct car configuration file (CCF) is being used. Configure the module(s) using the approved diagnostic system. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.
U1A1449CAN Initialization Failure
  • Parking brake actuator module fault
 Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table. Refer to the warranty policy and procedures manual if a module is suspect.
U200201Switch
  • Parking brake switch circuit open circuit
  • Parking brake switch circuit short circuit to ground
  • Parking brake switch circuit short circuit to power
  • Parking brake switch circuit short circuit to each other
  • Parking brake switch fault
Note that this DTC can be set by very slow operation of the parking brake switch. Check the parking brake switch and circuits. With the parking brake switch connected the following resistance should be measured at the parking brake actuator module end: (between 2584 ohms and 2636 ohms) between C2178-B3 & C2178-C4 and (between 2584 ohms and 2636 ohms) between C2178-B4 & C2178-C3. Refer to the electrical guides. Install a new parking brake switch as necessary. Clear DTCs, complete drive cycle 1 to test for normal operation, refer to the relevant drive cycle shown below this table.

Drive Cycle 1 Description

  • Ignition On
  • Make sure that no parking brake activation (diagnostic command or switch input) is attempted for a minimum of 3 seconds
  • Retest for functionality

Drive Cycle 2 Description

  • Ignition On
  • Drive vehicle at a constant speed of 20KPH (13MPH) or slightly above in 2nd gear
  • At a constant speed of 20KPH (13MPH) or slightly above apply the parking brake via the parking brake switch
  • Press the brake pedal

Drive Cycle 3 Description

  • Ignition On
  • Make sure that the vehicle is stationary and that the parking brake is released
  • Pull the parking brake switch to the apply position and hold in this position until the parking brake motor has stopped (this may take up to 5 seconds)
  • Release the parking brake switch to the idle position, leave in the idle position for 2 seconds
  • Push the parking brake switch to the release position (while pressing the brake pedal) and keep in this position until the parking brake motor has stopped (this may take up to 5 seconds)
  • Release the parking brake switch to the idle position