Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Verify that all door locks and switches are inoperative.

Do the power door locks operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, command the doors to lock and unlock.

Do the door lock actuators lock and unlock with each command?

Go to Step 4

Go to Step 5

Is the LOCK/MIRROR fuse open?

Go to Step 8

Go to Step 5

Is the DR LCK fuse open?

Go to Step 9

Go to Step 6

Test the battery positive voltage circuit of the lock switches for an open or high resistance.

Did you find and correct the condition?

Go to Step 11

Go to Step 7

Inspect for poor connections at the body control module (BCM).

Did you find and correct the condition?

Go to Step 11

Go to Step 10

Repair the short to ground in one of the following driver or passenger door lock switch circuits:

Did you complete the repair?

Go to Step 11

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Repair the short to ground in one of the following circuits:

Did you complete the repair?

Go to Step 11

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Replace the BCM.

Did you complete the replacement?

Go to Step 11

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Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2