Schematic Reference: Retained Accessory Power (RAP) Schematics

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. Close all doors.
3. Turn ON the ignition with the engine OFF.
4. Wait 5 seconds, then turn OFF the ignition.
5. Operate the components that have voltage supplied by the retained accessory power (RAP) relay.

Do the components operate?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Observe the Delay Acc. Bus Output parameter in the BCM data list.

Does the Delay Acc. Bus Output indicate ON?

Go to Step 4

Go to Step 11

1. Turn ON the ignition, with the engine OFF.
2. With the scan tool, command the RAP relay ON and OFF.

Does the RAP relay turn ON and OFF with each command?

Go to Step 8

Go to Step 5

1. Turn OFF the ignition.
2. Disconnect the RAP relay.
3. Turn ON the ignition, with the engine OFF.
4. Probe the coil side feed circuit of the RAP relay with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 6

Go to Step 12

1. Connect a test lamp between the coil control circuit of the RAP relay and the coil side feed circuit of the RAP relay.
2. With the scan tool, command the RAP relay ON and OFF.

Does the test lamp turn ON and OFF with each command?

Go to Step 8

Go to Step 7

Test the coil control circuit of the RAP relay for a open or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 11

Test the RAP controlled voltage circuit of the RAP relay for open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 9

Test the RAP controlled voltage circuit of the RAP relay for open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 15

Go to Step 10

Inspect for poor connections and terminal tension at the RAP relay. 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 15

Go to Step 13

Inspect for poor connections and terminal tension 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 15

Go to Step 14

Repair the coil side feed circuit of the RAP relay for an open or short to ground. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 15

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Replace the RAP relay.

Did you complete the replacement?

Go to Step 15

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

Did you complete the replacement?

Go to Step 15

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 1