GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the RAP Diagnostic System Check?

--

Go to Step 2

Go to Diagnostic System Check - Retained Accessory Power

2

Verify that the RAP is on after timeout.

Does the RAP system operate normally?

--

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

Go to Step 3

3

  1. Use the scan tool in order to monitor the driver and passenger door handle and jamb switches.
  2. Open and close each door.

Do the inputs change between ACTIVE and INACTIVE?

--

Go to Step 4

Go to Diagnostic System Check - Lighting Systems in Lighting Systems

4

  1. Close all of the doors.
  2. Turn the ignition and start switch to the ON position, then to the OFF position.
  3. Using the scan tool, monitor the RAP timer.

Does the RAP timer count down?

--

Go to Step 5

Go to Diagnostic System Check - Body Control System in Body Control System

5

Disconnect the body control module (BCM) connector C1.

Does the RAP system deactivate?

--

Go to Step 13

Go to Step 6

6

Disconnect the RAP relay.

Does the RAP system deactivate?

--

Go to Step 12

Go to Step 7

7

Test for a short to B+ between the RAP relay terminal 30 and the RDO IGN fuse located in the IP Fuse Block.

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 15

Go to Step 8

8

Remove the RDO IGN fuse from the IP Fuse Block.

Did the RAP system deactivate?

--

Go to Step 10

Go to Step 9

9

Remove the POWER WINDOW circuit breaker from the Body Relay Block.

Did the RAP system deactivate?

--

Go to Step 11

 

10

Test for a short to B+ in CKT 1301 (DK GRN).

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 15

--

11

Test for a short to B+ in CKT 1001 (DK GRN).

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 15

--

12

Test for a short to ground between RAP relay terminal 86 and the body control module connector C1 terminal A7.

Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

--

Go to Step 15

Go to Step 14

13

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

Is the repair complete?

--

Go to Step 15

--

14

Replace the RAP relay.

Is the repair complete?

--

Go to Step 15

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15

Operate the system in order to verify the repair.

Did you correct the condition?

--

System OK

Go to Step 3