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For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Corvette 🢒 Body and Accessories 🢒 Retained Accessory Power 🢒 Retained Accessory Power (RAP) Inoperative

Retained Accessory Power (RAP) Inoperative Radio and Doors

RAP Inoperative at Radio and Doors

Step

Action

Value(s)

Yes

No

DEFINITION: The radio and both door windows do not operate during the Retained Accessory Power (RAP) period with the doors still closed.

1

Where you sent here from the RAP Diagnostic System Check?

Go to Step 2

Go to RAP Diagnostic System Check

2
  1. Turn the ignition switch to the ON position.
  2. Close all doors securely.

Does the Instrument Panel Cluster (IPC) Information Center indicate that a door is ajar?

Go to Step 6

Go to Step 3

3

Is the radio the only component that is inoperative during RAP?

Go to Step 12

Go to Step 4

4

Is the LH window control switch the only component inoperative during RAP?

Go to Step 13

Go to Step 5

5

Is the RH window control switch the only component inoperative during RAP?

Go to Step 14

Go to BCM Diagnostic System Check

6
  1. Turn the ignition to the OFF position.
  2. Disconnect the LH door ajar indicator switch.
  3. Turn the ignition switch to the ON position.

Is the DOOR AJAR message still displayed on the IPC information center?

Go to Step 7

Go to Step 15

7
  1. Turn the ignition to the OFF position.
  2. Disconnect the RH door ajar indicator switch.
  3. Turn the ignition switch to the ON position.

Is the DOOR AJAR message still displayed on the IPC information center?

Go to Step 8

Go to Step 16

8
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the BCM (lower pink) connector C2.
  3. Disconnect the LH door control module (red) connector C1.
  4. Connect a DMM between the LH door ajar indicator switch connector terminal B and ground.
  5. Check for continuity between ground and CKT 745.

Is CKT 745 shorted to ground?

Go to Step 17

Go to Step 9

9
  1. Disconnect the RH door control module (red) connector C1.
  2. Connect a DMM between the RH door ajar indicator switch connector terminal C and ground.
  3. Check for continuity between ground and CKT 746.

Is CKT 746 shorted to ground?

Go to Step 18

Go to Step 10

10
  1. Reconnect the BCM (lower pink) connector C2.
  2. Reconnect the LH door control module (red) connector C1.
  3. Reconnect the RH door control module (red) connector C1.
  4. Leave the door ajar switches disconnected.
  5. Reinstall the scan tool.
  6. Turn the ignition switch to the ON position.
  7. Attempt to establish communication with the following modules:
    8. • LH Door Control Module
    • RH Door Control Module
    • Body Control Module
    • Instrument Panel Cluster
  8. Check for an active door message at each of these modules.

Do any of these four modules indicate an active door ajar input?

Go to Step 11

System OK

11

Replace the module indicating an active door ajar input.

Is the repair complete?

Go to RAP Diagnostic System Check

12

Replace the radio.

Is the repair complete?

Go to RAP Diagnostic System Check

13

Replace the LH door control module.

Is the repair complete?

Go to RAP Diagnostic System Check

14

Replace the RH door control module.

Is the repair complete?

Go to RAP Diagnostic System Check

15

Replace the LH door ajar indicator switch.

Is the repair complete?

Go to RAP Diagnostic System Check

16

Replace the RH door ajar indicator switch.

Is the repair complete?

Go to RAP Diagnostic System Check

17

Repair the short to ground in CKT 745.

Is the repair complete?

Go to RAP Diagnostic System Check

18

Repair the short to ground in CKT 746.

Is the repair complete?

Go to RAP Diagnostic System Check