GM Service Manual Online
For 1990-2009 cars only

Retained Accessory Power (RAP) On After Timeout no relay

Step

Action

Yes

No

1

Did you perform the retained accessory power (RAP) diagnostic system check?

Go to Step 2

Go to Diagnostic System Check - Retained Accessory Power

2

  1. Install a scan tool.
  2. With the scan tool, observe all door jamb/liftgate switches.
  3. Open and close each door.

Does the scan tool display change from active to inactive?

Go to Step 3

Go to Diagnostic System Check - Lighting Systems in Lighting Systems

3

  1. Close all of the doors.
  2. Turn the ignition switch to the ON position, then to the OFF position.
  3. Wait 10 minutes.
  4. Attempt to operate the sunroof and/or the rear quarter power vent windows after 10 minutes has elapsed.

Do any of the items operate after 10 minutes has elapsed?

Go to Step 4

Go to Step 5

4

  1. Disconnect the ribbon connector from the BCM.
  2. Test the RAP output voltage for battery voltage, after the 10 minute timer has elapsed.

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 5

5

Inspect the BCM for the following conditions:

    • Poor connections
    • Intermittent faults

Refer to the following in Wiring Systems:

    •  Connector Repairs

Did you find and correct the condition?

Go to Step 7

Go to Step 6

6

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 7

--

7

Operate the system in order to verify the repair.

Does RAP power mode function normally?

System OK

Go to Step 2