GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Retained Accessory Power (RAP) Schematics

1

Did you perform the Diagnostic System Check - Retained Accessory Power?

Go to Step 2

Go to Diagnostic System Check - Retained Accessory Power

2

  1. Close the vehicle doors.
  2. Close the rear compartment lid.
  3. Turn the ignition to the RUN position.
  4. Turn the ignition to the OFF position.
  5. Wait at least 10 minutes.

Do all of the RAP functions still operate after the 10 minute time-out period?

Go to Step 3

Go to Step 9

3

Disconnect the RAP relay.

Do the RAP functions still operate?

Go to Step 4

Go to Step 5

4

Repair the short to B+ in the RAP relay output circuits. Refer to Wiring Repairs in Wiring Systems.

Have you completed the repair?

Go to Step 9

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5

Test for continuity between the normally open (NO) Rap relay switched contacts. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 6

6

Test the control circuit of the RAP relay 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 8

Go to Step 7

7

Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 8

8

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

Is the repair complete?

Go to Step 9

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9

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3