Pinpoint Test C: Door Latching And Locking Function Test

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C1: HARNESS CONNECTION
NOTE: Test as a single component to ensure that the door latch is not replaced unnecessarily, when another component may be at fault
	1  Remove the door trim panel as necessary REFER to: Front Door Trim Panel / Rear Door Trim Panel .
	2  Disconnect harness from latch, check for corrosion or damage to both connectors at socket points and pins. Re-connect harness ensuring 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.

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C2: LOCK COMMAND SIGNAL FROM VEHICLE HARNESS
	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 via the key-fob or smart key between terminals 1 and 10 left side  or 8 and 10 right side
	Is there momentary power (for approx 8 seconds) between terminals 1 and 10 left side  or 8 and 10 right side  when locking the vehicle via 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 manufacturer approved diagnostic system check for logged DTCs to localize the fault

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C3: UNLOCK COMMAND SIGNAL FROM VEHICLE HARNESS
	1  Monitor the circuit for momentary power when unlocking the vehicle via the key-fob or smart key between terminals 1 and 9 left side  or 8 and 9 right side
	Is there momentary power (for approx 8 seconds) between terminals 1 and 9 left side  and 8 and 9 right side  when unlocking the vehicle via the key-fob or smart key? Yes  The vehicle electrical system is locking 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 manufacturer approved diagnostic system check for logged DTCs to localize the fault

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C4: PHYSICAL TEST 1
	1  Remove latch module from door REFER to: FRONT DOOR LATCH  / REAR DOOR LATCH .
	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
	NOTE: Figure 1 - Unlatched position shown NOTE: Figure 2 - First safety latched position shown NOTE: Figure 3 - Fully latched position shown NOTE: 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 replace the door latch. If replacing latch as part of a warranty claim, please quote reference code LKINOP  in the technician comments section of the warranty claim

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C5: PHYSICAL TEST 2
	NOTE: Unlocked position shown 1  With the latch in the locked state (i.e. 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 replace the door latch. If replacing latch as part of a warranty claim, please quote reference code LKINOP  in the technician comments section of the warranty claim

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C6: PHYSICAL TEST 3
	NOTE: Fully latched position shown 1  With the latch in its unlocked state, push the latch exterior release lever against its return spring, whilst 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 replace the door latch. If replacing latch as part of a warranty claim, please quote reference code EXTINOP  in the technician comments section of the warranty claim

TEST CONDITIONS	DETAILS/RESULTS/ACTIONS
C7: PHYSICAL TEST 4
	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, ensure 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  Whilst the latch is still in its unlocked state, push the latch interior release lever against its return spring, whilst 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 replace the latch. If replacing latch as part of a warranty claim, please quote reference code INTINOP  in the technician comments section of the warranty claim