1

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

Go to Step 2

Go to Diagnostic System Check - Retained Accessory Power

1. Install a scan tool.
2. With the scan tool, observe all door jamb 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

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 radio and/or the power windows after 10 minutes has elapsed.

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

Go to Step 4

Go to Step 10

1. Remove the ACC relay from the BCM.
2. Test the ACC relays + control terminal on the BCM for battery voltage, after the 10 minute timer has elapsed.

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Does battery voltage exist after 10 minutes has expired?

Go to Step 8

Go to Step 5

With the ACC relay removed from the BCM do the radio or power windows operate?

Go to Step 6

Go to Step 7

Repair the short to voltage in the battery positive voltage relay output circuit, which feeds the radio and power windows.

Refer to Wiring Repairs and Circuit Testing in Wiring Systems.

Is the repair complete?

Go to Step 10

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Replace the ACC relay on the BCM.

Is the repair complete?

Go to Step 10

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Inspect the BCM for poor connections and intermittent faults.

Refer to the following in Wiring Systems:

Did you find and correct the condition?

Go to Step 10

Go to Step 9

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

Did you complete the replacement?

Go to Step 10

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Operate the system in order to verify the repair.

Does RAP power mode function normally?

System OK

Go to Step 2