Schematic Reference: Door Lock/Indicator Schematics

Connector End View Reference: Power Door Systems Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Verify that the power door locks 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, observe the Door Lock Switch parameter in the doors data list.

Does the scan tool display Idle?

Go to Step 4

Go to Step 8

Activate the driver door lock switch to the LOCK and UNLOCK positions.

Does the scan tool display Idle?

Go to Step 9

Go to Step 5

Activate the front passenger door lock switch to the LOCK and UNLOCK positions.

Does the scan tool display Idle?

Go to Step 9

Go to Step 6

1. With a scan tool, observe the driver door lock actuator command and the passenger Door Lock Actuator Command parameters in the doors data list.
2. Activate a door lock switch to the LOCK and UNLOCK positions.

Does the scan tool display Idle?

Go to Step 7

Go to Step 10

1. Replace the DOOR LOCK fuse.
2. Disconnect all of the door lock actuators.
3. Activate a door lock switch to the LOCK and UNLOCK positions.

Does the DOOR LOCK fuse open?

Go to Step 11

Go to Step 13

Test the door lock lock/unlock signal circuit of the driver and passenger door lock switches for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 14

Test the appropriate door lock lock/unlock signal circuit for an open. Refer to Circuit Testing and to Wiring Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 12

Test the appropriate door lock actuator control circuit for an open. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 13

Test the door lock actuator control circuits for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 15

Test the ground circuit of the appropriate door lock switch for an open. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 14

Inspect for poor connections at the appropriate 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 19

Go to Step 16

Inspect for poor connections at the appropriate door lock switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 17

Inspect for poor connections at the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 19

Go to Step 18

Replace the appropriate door lock. Refer to Front Side Door Lock Replacement or to Rear Door Lock Replacement .

Did you complete the repair?

Go to Step 19

--

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

Did you complete the repair?

Go to Step 19

--

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

Did you complete the replacement?

Go to Step 19

--

Operate the system in order to verify the repair.

Did you find and correct the condition?

System OK

Go to Step 2