DEFINITION: This test assumes that all DTCs have been diagnosed.

Did you perform A Diagnostic System Check - Door Systems?

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 Lock Switch parameter using the scan tool.
4. Activate the driver door lock switch.
5. Observe the Passenger Door Lock Switch parameter using the scan tool.
6. Activate the passenger door lock switch.

Do both parameters change state from Idle to both the Lock and the Unlock states?

Go to Step 12

Go to Step 3

Does the driver door parameter indicate all three states, Idle, Lock and Unlock?

Go to Step 5

Go to Step 4

1. Activate the driver door lock switch.
2. Observe the Driver Lock Switch parameter using the scan tool.

Does the Driver Lock Switch parameter change to any state other than Idle?

Go to Step 6

Go to Step 8

1. Activate the passenger door lock switch.
2. Observe the Passenger Lock Switch parameter using the scan tool.

Does the Passenger Lock Switch parameter change to any state other than Idle?

Go to Step 7

Go to Step 8

1. Turn the ignition OFF.
2. Disconnect the driver door lock switch harness connector.
3. Install a fused jumper in the harness connector, between the switch ground and the signal circuit of the lock state that did not respond.
4. Turn ON the ignition, with the engine OFF.

Does the Driver Door Lock Switch parameter indicate the missing state?

Go to Step 10

Go to Step 9

1. Turn the ignition OFF.
2. Disconnect the passenger door lock switch harness connector.
3. Install a fused jumper in the harness connector, between the switch ground and the signal circuit of the lock state that did not respond.
4. Turn ON the ignition, with the engine OFF.

Does the Passenger Door Lock Switch parameter indicate the missing state?

Go to Step 10

Go to Step 9

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

Did you find and correct the condition?

Go to Step 17

Go to Step 15

Test the signal circuit of the inoperative lock state for an open circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 15

Inspect for poor connections/terminal tension at the inoperative 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 17

Go to Step 11

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

Did you complete the replacement?

Go to Step 17

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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 lock to lock and unlock.

Does each door lock and unlock when commanding LOCK and commanding UNLOCK?

Go to Step 17

Go to Step 13

Test the door lock motor circuits of the lock(s) that do not both lock and unlock for shorts to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 17

Go to Step 14

Replace the door module for the lock(s) that do not both lock and unlock. Refer to Door Control Module Replacement - Front and Door Control Module Replacement - Rear .

Did you complete the replacement?

Go to Step 17

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Inspect for poor connections/terminal tension at the inoperative passenger door module or driver door switch assembly 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 17

Go to Step 16

Replace the driver door switch assembly or passenger door module that fails to respond to the door lock switch signals. Refer to Front Door Switch Replacement or Door Control Module Replacement - Front .

Did you complete the replacement?

Go to Step 17

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2