Automatic Door Locks Inoperative. Chevrolet Evaluator 1985

For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Power Door Systems Connector End Views
1 | Did you perform the Vehicle Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2 | Verify that the automatic door locks are inoperative. Do the automatic door locks operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3

3

1. Install a scan tool.
2. Turn the ignition ON, with the engine Off.
3. With a scan tool, observe the auto door locks mode parameter in the Body Control Module (BCM) data list.

Does the scan tool display Enabled?

Go to Step 4

Go to Personalization

4 | Do the power door locks operate normally? | Go to Step 5 | Go to Symptoms - Doors

5

1. Close the driver door.
2. With a scan tool, observe the driver door ajar switch parameter in the Body Control Module data list.

Does the scan tool display Door Ajar?

Go to Step 6

Go to Step 7

6 | Test the left front door ajar switch signal circuit of the driver door lock harness connector for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 8
7 | Inspect for poor connections at the harness connector of the body control module. 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 9
8 | Inspect for poor connections at the harness connector of the driver door lock. 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 10

9

1. Perform the set-up procedure for the body control module. Refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.
2. Replace the body control module. Refer to Body Control Module Replacement in Computer/Integrating System.

Did you complete the replacement?

Go to Step 11

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10 | Replace the driver door lock. Refer to Assembly, Door - Inner Front . Did you complete the replacement? | Go to Step 11 | --
11 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2