I have a 2011 jeep grand Cherokee limited. The rear hatch door does not unlock with the power locks. I have to manually unlock it with a screwdriver. Once its unlocked I can open and close the rear hatch door normally until I lock the doors again. I have replaced the locking mechanism.
Is this a good question?
Rep: 544.3k
11
418
1.6k
Hi @ace5029
Don't know Jeeps but since you've replaced the lock mechanism, check the wiring/connections between the liftgate control module (located in left D pillar) and the door latch mechanism.
Looking at the wiring diagram (see below), in the liftgate door latch box (upper right side in diagram) there's a lgate cnch rel latch (cnch) connection on pin 4 and a lgate cnch rel ulatch (rel) connection on pin 1.
Presumably latch = lock and ulatch = unlock
Since the lock function works check the tan/white wire from the door latch pin 1 to the liftgate control module pin 21 is OK.
If the wire is OK check if there's a signal voltage on the wire when the door is being unlocked.
If there isn't it may be a problem in the liftgate control module. I assume that the CAN bus connection between the control module and the body control module is OK as you can lock the liftgate
(click on image)
Was this answer helpful?
Past 24 Hours: 2
Past 7 Days: 17
Past 30 Days: 50
All Time: 154
