DEFINITION: Door locks do not operate from the door lock switch mounted on the inside of the driver or passenger door. This test assumes that all DTCs have been diagnosed.

Did you perform the Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

1. Install a scan tool.
2. Turn ON the ignition with the engine OFF.
3. Observe the Driver (or Passenger) Door Lock Sw. parameter in the Driver Door Module data list using the scan tool.
4. Activate the driver (or passenger) door lock switch.

Does the Driver (or Passenger) Door Lock Sw. parameter change state?

Go to Step 8

Go to Step 3

1. Turn the ignition OFF.
2. Disconnect the door lock switch harness connector.
3. Install a 3 A fused jumper between the door lock switch signal circuits and the return circuit.
4. Observe the Driver (or Passenger) Door Lock SW. parameter using the scan tool.

Does the Driver (or Passenger) Door Lock Sw. parameter change state?

Go to Step 5

Go to Step 4

Test the door lock switch circuits. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 5

Inspect for poor connections/terminal tension at the door lock switch harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 6

Inspect for poor connections/terminal tension at the driver door switch assembly (passenger door module) harness connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 7

Replace the door lock switch. Refer to Door Lock Switch Replacement .

Did you complete the replacement?

Go to Step 11

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1. Choose each door lock in the Door Lock Test application of the Output Control application of the Special Functions in the Driver Door Module data list using the scan tool.
2. Command the door locks to lock and unlock.

Do any door locks lock and unlock?

Go to Step 11

Go to Step 9

Inspect for poor connections/terminal tension at the driver door module harness connector. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 11

Go to Step 10

Replace the driver door module. Refer to Door Control Module Replacement .

Did you complete the replacement?

Go to Step 11

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2