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 Diagnostic System Check for the door systems? | Go to Step 2 | Go to Diagnostic System Check - Door Systems
2 |

1. Connect a scan tool.
2. Turn the ignition ON, with the engine Off.
3. Read the current personalization setting for the automatic door lock mode.

Is the personalization setting correct?

Go to Step 3

Go to Vehicle Personalization in Personalization

3 | Verify that the fault is present. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 4
4 | Verify that the power door locks operate correctly. Do the power door locks operate correctly? | Go to Step 5 | Go to Symptoms - Doors
5 | Close all the doors. Do the courtesy lamps go out? | Go to Step 9 | Go to Step 6
6 | Test the door jamb switch signal circuits to the BCM 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 10 | Go to Step 7
7 | Replace the defective door jamb switch. Refer to Rear Door Jamb Switch Replacement in Lighting Systems. Did you complete the repair? | Go to Step 10 | --
8 | Monitor the transmission range switch (TR Sw) in the powertrain control module (PCM) transmission data display. Does the TR Sw operate correctly. | Go to Step 9 | Go to Range Selector Displays Incorrect Range
9 |

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

Did you complete the repair?

Go to Step 10

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10 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2