Component Testing

WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

Door Lock Switch Test

Ignition OFF, disconnect the harness connector at the appropriate door lock/window switch.
Test for infinite resistance between the signal terminals D and E and the ground terminal B with the switch in the open position.
- If less than the specified value, replace the door lock switch.
Test for less than 2 Ω between the signal terminal E and the ground terminal B with the switch in the lock position.
- If greater than the specified range, replace the door lock/window switch.
Test for less than 2 Ω between the signal terminal D and the ground terminal B with the switch in the unlock position.
- If greater than the specified range, replace the door lock/window switch.

Door Latch

Ignition OFF, disconnect the harness connector at the appropriate door latch.
Install a 25 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the door latch should perform the LOCK and UNLOCK functions.
- If it does not perform as specified, replace the door latch.

Relay Test

Ignition OFF, disconnect the appropriate relay.
Test for 60-200 Ω between terminals 85 and 86.
- If not within the specified range, replace the relay.
Test for infinite resistance between the following terminals:
- 30 and 86
- 30 and 87
- 30 and 85
- 85 and 87
- If less than the specified value, replace the relay.
Test for less than 2 Ω between terminals 30 and 87A.
- If greater than the specified range, replace the relay.
Install a 3 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 Ω between terminals 30 and 87.
- If greater than specified range, replace the relay.