GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Park Avenue 🢒 Body and Accessories 🢒 Retained Accessory Power 🢒 Retained Accessory Power (RAP) On After Timeout

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. Close all the doors.
  3. Turn ON the ignition with the engine OFF.
  4. Wait 5 seconds, then turn OFF the ignition.
  5. Wait 10 minutes.
  6. Observe the remote function actuator (RFA) Accessory 1 status.

Does the Accessory 1 status indicate Off?

Go to Step 3

Go to Step 13

3

Observe the RAP Output parameters in the RFA data list.

Does the RAP Output indicate OFF?

Go to Step 4

Go to Step 14

4
  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 10

Go to Step 5

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 15

6
  1. Connect a test lamp between the 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 10

Go to Step 7

7

Does the test lamp remain illuminated with each command?

Go to Step 9

Go to Step 8

8

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

Did you find and correct the condition?

Go to Step 18

Go to Step 13

9

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 18

Go to Step 14

10

Test the load output circuit of the RAP relay for short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 11

11

Test the load input circuit of the RAP relay for open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 12

12

Inspect for poor connections/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 18

Go to Step 16

13

Test the RFA ignition positive voltage circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 14

14

Inspect for poor connections/terminal tension at the harness connector of the RFA. 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 18

Go to Step 17

15

Repair the coil side feed circuit of the RAP relay. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 18

--

16

Replace the RAP relay.

Did you complete the replacement?

Go to Step 18

--

17

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

Did you complete the replacement?

Go to Step 18

--

18

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2