Schematic Reference: Door Control Module Schematics

Connector End View Reference: Power Door Systems Connector End Views

Did you perform the Door Systems Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Door Systems

Verify that the driver door power door lock inoperative fault is present.

Does the driver door power door lock operate normallly?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Are the power mirrors and driver window inoperative also?

Go to Step 6

Go to Step 4

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Observe the Door Lock Switch and Door Unlock Switch parameters in the Left Door Control Module data list.
4. Actuate the driver door lock switch to LOCK and UNLOCK.

Does the scan tool display Active for the Door Lock Switch and Door Unlock Switch parameters?

Go to Step 5

Go to Step 7

1. Turn OFF the ignition.
2. Disconnect the driver door latch C3 connector.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp between the door lock actuator lock control circuit of the driver door latch C3 connector and the door lock actuator unlock control circuit of the driver door latch C3 connector.
5. Actuate the driver door lock switch to LOCK and UNLOCK.

Does the test lamp illuminate in both directions?

Go to Step 9

Go to Step 8

Test the driver door switch ground circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 10

Test the driver door lock switch signal circuits for a short to voltage or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 10

Test the driver door lock actuator control circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 11

Inspect for poor connections at the harness connectors of the driver door latch. 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 15

Go to Step 12

Inspect for poor connections at the harness connector of the driver door switch. 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 15

Go to Step 13

Inspect for poor connections at the harness connector of the driver door module (DDM). 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 15

Go to Step 14

Replace the driver door latch. Refer to Door Lock Replacement .

Did you complete the replacement?

Go to Step 15

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Replace the driver door switch. Refer to Front Door Switch Replacement .

Did you complete the replacement?

Go to Step 15

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

Did you complete the replacement?

Go to Step 15

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2