For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Vehicle Access Connector End Views
1 | Did you review the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
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 | Go to Step 3
3 | Observe the driver information center (DIC) for the current automatic door lock mode. Refer to Vehicle Personalization . Is the correct automatic door lock mode selected? | Go to Step 4 | Go to Vehicle Personalization
4 | Do the power door locks operate normally? | Go to Step 5 | Go to Symptoms - Vehicle Access
5 |

1. Close all of the doors.
2. With a scan tool, observe the driver door ajar sw. and the passenger door ajar sw. parameters in the body control module (BCM) data list.

Does the scan tool display Door Closed for both parameters?

Go to Step 7

Go to Step 6

6 | Test the appropriate door ajar switch signal circuit of the appropriate door lock harness connector for a short to ground. Refer to Circuit Testing and Wiring Repairs . 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 BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . 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 appropriate door ajar switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 11 | Go to Step 10
9 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 11 | --
10 | Replace the appropriate door ajar switch. 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