Schematic Reference: Door Lock/Indicator Schematics

Connector End View Reference: Vehicle Access Connector End Views or Vehicle Access Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Activate the door lock switches to the lock and unlock positions.

Does the rear liftgate lock actuator lock and unlock?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Disconnect the liftgate lock actuator.
2. With a test lamp connected to a good ground, probe the door lock actuator lock circuit at the door lock actuator harness connector.
3. Activate a door lock switch to lock position.

Does the test lamp illuminate?

Go to Step 4

Go to Step 6

1. With a test lamp connected to a good ground, probe the door lock actuator unlock circuit at the door lock actuator harness connector.
2. Activate the door lock switch to the unlock position.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

1. Connect a test lamp between the door lock actuator lock and unlock circuits at the door lock actuator harness connector.
2. Activate a door lock switch to both the lock and unlock positions.

Does the test lamp illuminate in both positions?

Go to Step 9

Go to Step 8

Test for an open or short to ground in the door lock actuator lock circuit. Refer to Circuit Testing and Wiring Repairs.

Did you find and correct the condition?

Go to Step 12

Go to Step 8

Test for an open or short to ground in the door lock actuator unlock circuit. Refer to Circuit Testing and Wiring Repairs.

Did you find and correct the condition?

Go to Step 12

Go to Step 8

Inspect for poor connections at the harness connector of the liftgate module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.

Did you find and correct the condition?

Go to Step 12

Go to Step 10

Inspect for poor connections at the harness connector of the door lock actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs.

Did you find and correct the condition?

Go to Step 12

Go to Step 11

Replace the liftgate module. Refer to Control Module References for replacement, setup, and programming.

Did you complete the repair?

Go to Step 12

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Replace the appropriate door lock actuator. Refer to Front Side Door Lock Actuator Replacement .

Did you complete the repair?

Go to Step 12

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2