For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Component Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 | Verify that all door locks and switches are inoperative. Do the power door locks operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3
3 | Is the DR/LOCK fuse open? | Go to Step 6 | Go to Step 4
4 | Test the battery positive voltage circuit of the lock switches for an open or high resistance. Did you find and correct the condition? | Go to Step 8 | Go to Step 5
5 | Inspect for poor connections at the Door Lock Relay. Did you find and correct the condition? | Go to Step 8 | Go to Step 7
6 | Repair the short to ground in one of the following circuits:

• | Driver door lock actuator unlock control

• | Door lock actuator lock control

• | Door lock actuator unlock control

Did you complete the repair?

Go to Step 8

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7 | Replace the Door Lock Relay. Did you complete the replacement? | Go to Step 8 | --
8 | Operate the system in order to verify the repair. Did you find and correct the condition? | System OK | Go to Step 2