Rear door does not unlock

Tiny
DGREENE
  • MEMBER
  • 2009 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 70,000 MILES
Starting today my rear gate failed to unlock. The four passenger doors are responding but the rear door wont unlock. Seeking advice. I have the vehicle listed above 4 door, XL model.
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Tuesday, May 11th, 2021 AT 2:35 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

Since the lock actuator receives power from the same source as the doors, it isn't a fuse-related issue. Here is the not-so-good news: The power lock motors are integral to the door latch units. The power lock motors cannot be adjusted or repaired. If inoperative or damaged, the door latch unit must be replaced. So with that, we need to confirm there isn't a broken wire or connector issue.

If you look at the pic below, I attached is a pic of the actuator location and two pics of the connector to the lock actuator and what each pin in the connector does.

The pins you need to focus on are numbers 1, 2, and 4.

Using a test light, voltmeter, or multimeter, check for power to pin #1 when a helper hits the unlock button, power to pin 2 when hitting the lock button, and then check for continuity to ground on pin 3.

If pins 1 and 2 have power and pin 4 has ground, the actuator motor is bad.

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care,

Joe
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Wednesday, May 12th, 2021 AT 9:01 PM

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