Automatic Door Locks Inoperative. Pontiac Demonstrator 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 in Vehicle DTC Information
2 | Verify that the automatic door locks are inoperative. Do the automatic door locks operate normally? | Go to 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 and 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 and 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 and 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 in Body Control System.
2. Replace the body control module. Refer to in Computer/Integrating System.

Did you complete the replacement?

Go to Step 11

--

10 | Replace the driver door lock. Refer to Front Side Door Lock Replacement . 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