GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Power Distribution Schematics

Connector End View Reference: Master Electrical Component List

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2

  1. Observe the following parameters in DDM, PDM and BCM data list:
  2. • Driver Door Ajar Switch w/o DDM
    • Passenger Door Ajar Switch w/o PDM
    • Door Ajar Switch
    • Left Rear/Rear Cargo Door Ajar Switch
    • Right Rear Door Ajar Sw.
  3. Open and close each door while observing the respective parameter.

Does the scan tool display change from On to Off, respectively?

Go to Step 3

Go to Symptoms - Lighting Systems

3

  1. Install a scan tool. Select diagnostic circuit check and then class 2 power mode.
  2. Close all the doors.
  3. Turn ON the ignition, with the engine OFF.
  4. Wait 5 seconds then turn the ignition OFF.
  5. Wait the time-out for retained accessory power (RAP).

Did the scan tool display the RAP power mode, then time-out and display Off-Awake power mode?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 4

4

Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .

Did you find and correct the condition?

Go to Step 6

Go to Step 5

5

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the procedure?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3