DIAGNOSIS AND TESTING

Principles of Operation

For a detailed description of the Locks, Latches and Entry Systems, refer to the relevant Description and Operation section in the workshop manual. REFER to: Handles, Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Description and Operation).

Inspection and Verification

CAUTIONS:

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.
The vehicle latches are non-serviceable. Lubrication must not be sprayed into or around the door, hood, fuel flap or tailgate latches. Care should be taken when washing the vehicle to not spray water at or into the latches

NOTES:

If a control module or a component is at fault or may be at fault and the vehicle remains under manufacturer warranty, refer to the Warranty Policy and Procedures manual, or determine if any prior approval program is in operation, prior to the installation of a new module/component.
When performing voltage or resistance tests, always use a digital multimeter that has the resolution ability to view 3 decimal places. For example, on the 2 volts range can measure 1mV or 2 K Ohm range can measure 1 Ohm. When testing resistance always take the resistance of the digital multimeter leads into account.
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
Inspect connectors for signs of water ingress, and pins for damage and/or corrosion.
If Diagnostic Trouble Code(s) 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.

Verify the customer concern

Visually inspect for obvious signs of damage and system integrity

Visual Inspection

Mechanical	Electrical
Doors, hood and tailgate alignment Fuel flap actuator Hood release handle Hood release cables Hood latches Door latches and strikers Tailgate latch and striker Door exterior handles Door interior handles Tailgate release switch	Fuses Wiring harnesses and connectors Central junction box Remote Function Actuator (RFA) Smart keys

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, verify the symptom and refer to the Symptom Chart, alternatively check for Diagnostic Trouble Code(s) and refer to the Diagnostic Trouble Code(s) Index

Check JLR claims submission system for open campaigns. Refer to the corresponding bulletins and SSMs which may be valid for the specific customer complaint and complete the recommendations as required.

Symptom Chart

NOTE:

Complete the diagnostic steps below to confirm any concern prior to replacing any component

Symptom	Possible Causes	Action
Message center indicates an open panel (and all opening panels are latched closed)	Hood/door/tailgate ajar switch circuit open circuit, high resistance	GO to Pinpoint Test D.
Vehicle mislocks (and all opening panels are latched closed)	Hood/door/tailgate ajar switch circuit open circuit, high resistance	GO to Pinpoint Test D.
Fuel flap does not lock/unlock	Fuel flap cable detached from body Fuel flap actuator detached from mounting bracket Fuel flap actuator disconnected Fuel flap actuator circuit short circuit to ground, short circuit to power, open circuit, high resistance	Check the condition and installation of the fuel flap cable Check the security of the fuel flap actuator and bracket Check the security of the actuator electrical connector Using the Jaguar Land Rover Approved Diagnostic Equipment, check the central junction box for related Diagnostic Trouble Code(s) and refer to the relevant Diagnostic Trouble Code(s) index
Door(s) will not unlatch/open when using the door exterior handle	Door exterior handle damaged Door exterior handle release cable detached from the handle or the latch Door latch internal failure	Check the integrity of the door exterior handle Check the integrity of the door exterior handle release cable GO to Pinpoint Test A.
Door(s) will not unlatch/open when using the door interior handle	Child lock(s) engaged Door interior handle damaged Door interior handle release cable detached from the handle or the latch Door latch internal failure	Check that the child locks are disengaged Check the integrity of the door interior handle Check the integrity of the door interior handle release cable GO to Pinpoint Test B.
Door(s) will not lock/unlock when using the smart key or the master lock/unlock switch	Body system fault Central door locking system fault Door system fault Door latch internal failure	Using the Jaguar Land Rover Approved Diagnostic Equipment, check the central junction box for related Diagnostic Trouble Code(s) and refer to the relevant Diagnostic Trouble Code(s) index Using the Jaguar Land Rover Approved Diagnostic Equipment, check the Remote Function Actuator (RFA) for related Diagnostic Trouble Code(s) and refer to the relevant Diagnostic Trouble Code(s) index Using the Jaguar Land Rover Approved Diagnostic Equipment, check the relevant door module for related Diagnostic Trouble Code(s) and refer to the relevant Diagnostic Trouble Code(s) index GO to Pinpoint Test C.
"Hood Open" warning displayed on the instrument cluster	Mis-alignment of hood latches Harness connection to switch Partial latching due to cable not returning fully to rest Failure of hood microswitch (variant with blue switch plunger only) Intermittent alarm periods or inability to lock the vehicle	Complete inspection of alignment for hood latches and adjust as necessary Inspect harness connections Inspect cable movement during latching (by manually closing latches with hood open) If the hood latch is installed with a blue switch plunger only and is showing intermittent failures then replace switched latch GO to Pinpoint Test E.
Hood will not unlatch when the lever is pulled (including single sided issue)	Mis-alignment of hood latches Release cable detachment from handle or latch	Complete inspection of alignment of hood latches and adjust as necessary Inspect cable fixing points to make sure cable is fully installed GO to Pinpoint Test F.
Hood will not latch (including single sided issue)	Mis-alignment of hood latches Bump stop adjustment incorrect Physical obstruction preventing closure Cable friction holding pawl in place	Complete inspection of alignment of hood latches and adjust as necessary Inspect that the bumpstops and other obstructions are not impeding the closure Inspect cable movement during latching (by manually closing latches with the hood open) GO to Pinpoint Test G.
Hood release lever does not return	Physical obstruction of lever Cable friction not allowing lever travel Cable detachment	Inspect that obstructions are not present for the hood latch lever that would impede closure Complete inspection of alignment of hood latches and adjust as necessary Inspect the cable fixing points to make sure the cable is fully installed
Hood release lever does not pull	Cable detachment from the latch or release lever mechanism Movement jammed/obstructed/blocked	Inspect the cable fixing points to make sure the cable is fully installed Inspect that obstructions are not present from the hood latch lever that would impede closing

Pinpoint Test

PINPOINT TEST A : SINGLE DOOR WILL NOT OPEN FROM THE OUTSIDE (BUT OPENS FROM THE INSIDE)
A1: CHECK THE EXTERIOR DOOR RELEASE CABLE TO EXTERIOR DOOR HANDLE IS INSTALLED CORRECTLY
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Remove the door trim panel as necessary
	2 Confirm the exterior door release cable is correctly installed to the exterior door handle
	Is the cable correctly installed? Yes GO to A2. No Connect the door release cable correctly. If the cable is damaged, install a new door release cable. Test the system for normal operation

A2: CHECK THE EXTERIOR DOOR HANDLE RELEASE CONNECTION TO THE DOOR LATCH
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Confirm the exterior door handle release connection to the door latch is installed correctly
	Is the exterior door handle release cable installed correctly? Yes GO to Pinpoint Test C. No Connect the door release cable correctly. If the cable is damaged, install a new door release cable. Test the system for normal operation

PINPOINT TEST B : SINGLE DOOR WILL NOT OPEN FROM THE INSIDE (BUT OPENS FROM THE OUTSIDE)
B1: CHECK THE INTERIOR DOOR RELEASE CABLE TO INTERIOR DOOR HANDLE IS INSTALLED CORRECTLY
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	NOTE: Figure A - Child lock off position shown 1 Make sure the child lock is disengaged (rear door only)
	2 Remove the door trim panel as necessary
	3 Confirm the interior door release cable is correctly installed to the interior door handle
	Is the cable correctly installed? Yes GO to B2. No Connect the door release cable correctly. If the cable is damaged, install a new door release cable. Test the system for normal operation

B2: CHECK THE INTERIOR DOOR HANDLE RELEASE CONNECTION TO THE DOOR LATCH
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Confirm the interior door handle release connection to the door latch is installed correctly
	Is the interior door handle release cable installed correctly? Yes GO to Pinpoint Test C. No Connect the door release cable correctly. If the cable is damaged, install a new door release cable. Test the system for normal operation

PINPOINT TEST C : DOOR LATCHING AND LOCKING FUNCTION TEST
C1: HARNESS CONNECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
NOTE: Test as a single component to make sure that the door latch is not replaced unnecessarily, when another component may be at fault
	1 Remove the door trim panel as necessary
	2 Disconnect harness from latch, check for corrosion or damage to both connectors at socket points and pins. Re-connect harness making sure robust assembly when all parts confirmed to be in good order. If harness or latch connectors are damaged, install new harness/latch as necessary. Test the system for normal operation
	Check for normal operation, does latch function correctly? Yes Re-assemble door trim and test for normal operation No GO to C2.

C2: LOCK COMMAND SIGNAL FROM VEHICLE HARNESS
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Close all vehicle doors apart from door being investigated, please note which door, left side or right side is under investigation
	2 Disconnect harness from latch to enable access to socket points to carry-out conductivity testing as detailed
	3 Monitor the circuit for momentary power when locking the vehicle through the key-fob or smart key between terminals 5 and 7 left side or 5 and 7 right side
	Is there momentary power (for approx 8 seconds) between terminals 5 and 7 left side or 5 and 7 right side when locking the vehicle through the key-fob or smart key Yes The vehicle electrical system is locking correctly, providing the signal to the latch GO to C3. No Refer to the electrical circuit diagrams and investigate why vehicle electrical system is not providing signals to the latch. Using the Jaguar Land Rover Approved Diagnostic Equipment check for set Diagnostic Trouble Code(s) to localize the fault

C3: UNLOCK COMMAND SIGNAL FROM VEHICLE HARNESS
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Monitor the circuit for momentary power when unlocking the vehicle through the key-fob or smart key between terminals 5 and 7 left side or 5 and 7 right side
	Is there momentary power (for approx 8 seconds) between terminals 5 and 7 left side and 5 and 7 right side when unlocking the vehicle through the key-fob or smart key? Yes The vehicle electrical system is unlocking correctly, providing the signal to the latch GO to C4. No Refer to the electrical circuit diagrams and investigate why vehicle electrical system is not providing signals to the latch. Using the Jaguar Land Rover Approved Diagnostic Equipment check for set Diagnostic Trouble Code(s) to localize the fault

C4: PHYSICAL TEST 1
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Remove latch module from door
	2 Inspect latch module for any visual damage
	3 With the latch in hand, connect the electrical connector(s) to connect door latch to door harness
	NOTE: THE LATCH IS NOW READY TO TEST 4 Close all vehicle doors except the door being investigated
	NOTES: Figure 1 - Unlatched position shown Figure 2 - First safety latched position shown Figure 3 - Fully latched position shown Test will not work if latch is only in first safety latch position 5 Rotate latch claw (using a small screw driver or similar), to the fully latched position (figure 3)
	NOTE: Unlocked position shown 6 Confirm that the latch interior release lever is in the unlocked position as shown
	NOTE: Locked position shown 7 Press the lock button on the key-fob or smart key
	Does the latch interior release lever move from the unlocked position to the locked position? Yes GO to C5. No If this is a repeat test and the vehicle electrical test section has been completed and confirmed that vehicle is working correctly, then install a new door latch as necessary

C5: PHYSICAL TEST 2
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	NOTE: Unlocked position shown 1 With the latch in the locked state (for example the latch interior release lever is in the locked position), press the key-fob or smart key unlock button
	Does the latch interior release lever move from the locked position to the unlocked position? Yes GO to C6. No If this is a repeat test and the vehicle electrical test section has been completed and confirmed that vehicle is working correctly, then install a new door latch as necessary

C6: PHYSICAL TEST 3
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	NOTE: Fully latched position shown 1 With the latch in its unlocked state, push the latch exterior release lever against its return spring, when simultaneously applying a light pressure to release the latch claw using a small screw driver or similar
	Does the latch claw release? Yes GO to C7. No Repeat tests C5 and C6 to confirm the fault GO to C5. If the repeat test has confirmed that the exterior release lever will not release the claw on an unlocked latch, install a new door latch as necessary

C7: PHYSICAL TEST 4
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	NOTE: Fully latched position shown 1 Using a small screw driver or similar, rotate latch claw to the second fully latched position
	NOTE: Figure A - Child lock off position shown 2 If testing a rear door latch, make sure that the child lock is turned to the off position
	NOTE: Unlocked position shown 3 Confirm that the latch interior release lever is in the unlocked position as shown
	4 When the latch is still in its unlocked state, push the latch interior release lever against its return spring, when simultaneously applying a light pressure to release the latch claw using a small screw driver or similar
	Does the latch claw release? Yes Latch has passed all tests to confirm its correct function. DO NOT REPLACE LATCH as part of any attempts to resolve any locking functionality issues No Repeat test GO to C7. If repeat test has confirmed that the interior release lever will not release the claw when the latch is in the unlocked state, then install a new door latch as necessary

PINPOINT TEST D : LATCH MOUNTED DOOR AJAR SWITCH TEST
D1: TEST 4 DOOR LATCH
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
NOTES: To investigate the functioning of the door ajar switch contained within the door latch, to prove or eliminate the door latch mounted door ajar switch as the root cause, follow the process below. This will prevent the unnecessary replacement of a correctly functioning door latch If a customer reports an issue relating to a door ajar signal, for example door latch won’t lock, or security system triggering (indicated through Diagnostic Trouble Code(s), there may be several components that generate the fault, including: Body wiring harness/connectors Door wiring harness/connectors Central junction box Door latch ajar switch
	1 Remove door trim from door
	2 Disconnect door harness from latch for access to connector pins for latch electrical testing
	3 Inspect latch module for any visual damage
	NOTES: Figure 1 - Unlatched position shown Figure 2 - First safety latched position shown Figure 3 - Fully latched position shown Test will not work if latch is only in first safety latch position 4 Using a small screw driver or similar, rotate latch claw to the second fully latched position (figure 3)
	5 Complete continuity test between terminals 1 and 4 (left side) or 8 and 4 (right side) with claw closed
	Does the continuity test pass? Yes The latch ajar switch is working correctly. Do not replace latch. Investigate for fault elsewhere in vehicle system No Release latch claw and repeat test from step 4 to confirm result. If this is a repeat test and you are sure that the ajar switch does not provide continuity when fully latched. Install a new door latch as necessary

PINPOINT TEST E : "HOOD OPEN" WARNING DISPLAYED ON THE INSTRUMENT CLUSTER
E1: HOOD CLOSED INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Inspect that the hood is closed correctly.
	Has the hood been closed correctly? Yes If the hood is closed correctly and the "Hood Open" warning is displayed on the Instrument Cluster GO to E2. No Close the hood correctly and retest.

E2: HOOD LATCH WIRING HARNESS CONNECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Open the hood and inspect the hood latch switch connection.
	Is the hood latch switch wiring harness correctly connected Yes The hood latch wiring harness is correctly connected GO to E3. No Connect the wiring harness to the hood latch switch and retest.

E3: HOOD LATCH INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 With the hood open, manually clasp the hood latch.
	Does the hood latch operate correctly? Yes If the hood latch operates correctly GO to E5. No If the hood latch does not operate correctly GO to E4.

E4: HOOD RELEASE CABLE INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 With the hood open and the hood latch manually clasped inspect the hood release cable for free movement.
	Does the hood release cable move freely? Yes If the hood release cable moves freely inspect the hood latch for free movement, replace as necessary and retest No If the hood release cable cannot move freely, replace as necessary and retest

E5: HOOD LATCH SWITCH WIRING HARNESS TO BODY CONTROL MODULE INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Refer to the vehicle wiring diagrams inspect the wiring harness from the hood latch switch connector to the Body Control Module (BCM).
	Has a hood latch switch wiring harness fault been found? Yes Repair the wiring harness as necessary and retest No If no fault can be found with the hood latch switch wiring harness, replace the hood latch as necessary and retest.

PINPOINT TEST F : HOOD WILL NOT UNLATCH WHEN THE RELEASE LEVER IS PULLED
F1: HOOD RELEASE LEVER INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Operate the hood release lever through the full lever travel.
	Does the hood open? Yes If the hood opens correctly, advise the customer on how to use the system. No further action required. No If the hood will not open or the hood release lever does not operate through the full lever travel GO to F2. .

F2: HOOD RELEASE LEVER INSPECTION CONTINUED
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Operate the hood release lever through full travel
	Does the hood release lever travel up to a hard stop? Yes If the hood release lever travels fully to a hard stop GO to F3. No If the hood release lever does not travel fully to a hard stop GO to F4.

F3: HOOD RELEASE LEVER RESISTANCE INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Operate the hood release lever.
	When operating the hood release lever can resistance be felt, as if connected to latches? Yes If resistance can be felt GO to F5. No If resistance cannot be felt GO to F4.

F4: HOOD RELEASE LEVER CABLE INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Remove the A pillar trim.
	Is the hood release cable connected to the hood release lever? Yes If the hood release cable is correctly connected to the hood release lever GO to F5. No If the hood release cable is not correctly installed to the hood release lever refit the cable and retest.

F5: ENGINE COMPARTMENT INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Gain access to the engine compartment and inspect the hood release cable connections to the hood latches.
	Are the hood release cables connected to the hood latches correctly? Yes If the hood release cables are correctly connected to the hood latches GO to F6. No If the hood latch cables are not correctly connected to the hood latches, reconnect the cables and retest.

F6: HOOD LATCH INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Inspect the hood latch mechanism for free movement.
	Do the hood latches move freely? Yes If the hood latches move freely GO to F7. No If either of the hood latches do not move freely, replace the hood latch and retest.

F7: RELEASE MECHANISM INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 With the hood open latch both latches manually, then slowly pull the release lever to a hard stop.
	Do both hood latches release? Yes If both hood latches release correctly, close the hood and retest. No If the hood latches do not release correctly, replace the hood latch release cable and retest.

PINPOINT TEST G : HOOD WILL NOT LATCH
G1: HOOD BUMP STOP/OBSTRUCTION INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Inspect the hood bump stops for correct position and also inspect for any debris obstructing the hood closure.
	Are the hood bump stops positioned incorrectly? Can obstructions be found? Yes If the hood bump stops are positioned incorrectly or obstructions are stopping the hood from closing, reposition the bump stops and remove the obstructions and retest. No If the hood bump stops are positioned correctly and no obstructions can be found GO to G2.

G2: HOOD LATCH AND STRIKER INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Inspect the hood latch striker and catch are correctly aligned.
	Are the hood latch striker and catch correctly aligned? Yes If the hood latch and striker are correctly aligned GO to G3. No If the hood latch striker and clasp are not correctly aligned, realign and retest.

G3: HOOD LATCH INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 With the hood open manually clasp the latch.
	Does the latch close correctly? Yes If the latch closes correctly GO to G4. No If the latch does not close correctly GO to G5.

G4: HOOD HINGE INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Inspect the hood hinges for obstructions.
	Are the hood hinges obstructed? Yes If an obstruction can be found remove and retest. No If an obstruction can be found GO to G5.

G5: HOOD RELEASE CABLE INSPECTION
TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
	1 Inspect the hood release cable for free movement
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	Does the hood release cable obstruct the hood latch operation? Yes Inspect the hood release cable and hood release lever for correct operation, replace as necessary No If the hood release cable moves freely and does not obstruct the hood latch, inspect the hood latch for correct operation and replace as necessary (See illustrations, latch closed front and upper view, latch open front and upper view).

Diagnostic Trouble Code(s) Index

For a list of Diagnostic Trouble Code(s) that could be set on this vehicle, please refer to Section 100-00. REFER to: (418-00 Module Communications Network)

Communications Network (Diagnosis and Testing),

Communications Network (Diagnosis and Testing).

Published: 17-Apr-2020

2007.0 Range Rover Sport (LS), 501-14

Handles, Locks, Latches and Entry Systems

Locks, Latches and Entry Systems (G1217617)