DTC 23/33 - Retained Accessory Power (RAP)

Circuit Description





The BCM Retained Accessory Power (RAP) function is enabled when the Ignition Switch is turned to "RUN". RAP allows the operation of power windows, radio or convertible top for up to 10 minutes after the Ignition Switch is turned to "OFF". RAP is immediately disabled if any door is opened. The BCM provides the RAP function through circuit 75 to WINDOWS Circuit Breaker 15 and RADIO fuse 17 in the I/P fuse block (see Attachment 8).

DTC Will Set When

Circuit 75 is either shorted to ground (while RAP is enabled), or shorted to B+ (while RAP is disabled) for more than 50 milliseconds; or circuit 102 is open.

Action Taken

DTC 23 will set. RAP feature will not function (circuit 75 shorted to ground), or RAP feature will not deactivate when door is opened (circuit 75 shorted to B+). BCM will read out a series of flash codes upon entering Diagnostic Mode.

DTC Will Clear When

Fault is corrected and DTC memory clearing procedure is completed.

DTC Chart Test Description











Numbers below refer to the steps in the diagnostic table (see Attachments 9,10,11).

1. This step uses the Radio to determine whether the fault is a short to ground or a short to B+. An inoperative Radio would indicate a short to ground in circuit 75 or circuit 341 or an open RADIO Fuse 17 due to a short to ground in circuit 43. An operative Radio could indicate a short to B+ in circuit 75, circuit 341, or circuit 43.

2. This test determines if the Radio operates due to a short to B+ or a defective BCM.

4. This step isolates the short to B+ to one side of RADIO Fuse 17.

5. If the short to B+ is in circuit 43, this step determines if the short is caused by the Radio or Amplifier.

8. If the vehicle is equipped with Steering Wheel Controls and the Radio and Amplifier are not the cause of the short to B+, this step determines if the short is in the harness or the Steering Column.

11. This step checks for a blown RADIO Fuse 17. A blown fuse would indicate a short to ground in circuit 43.

12. If the short to ground is in circuit 43, this step determines if the short is caused by the Radio or Amplifier.

15. If the vehicle is equipped with Steering Wheel Controls and the Radio and Amplifier are not the cause of the short to ground, this step determines if the short is in the harness or the Steering Column.

19. Knowing there is a short to B+ in circuit 75 (and therefore circuit 341), this test isolates the short to one side of connector C200 on vehicles equipped with Power Windows.

20. Knowing the short to B+ is on the C200C side of circuit 341, this test determines if the short is in the harness, the Power Window Control Module or a Power Window Switch.

24. Knowing the short to B+ is in the C200D side of circuit 341, this test determines if the short is caused by the Convertible Top Switch (if equipped).

27. Knowing the short to B+ is in the harness, this step isolates the fault to either circuit 75 or circuit 341.

29. This step checks for an open in circuit 102.

32. Knowing there is a short to ground in circuit 75 (and therefore circuit 341), this test Isolates the short to one side of connector C200 on vehicles equipped with Power Windows.

33. Knowing the short to ground is on the C200C side of circuit 341, this test determines if the short is in the harness, the Power Window Control Module or a Power Window Switch.

37. Knowing the short to ground is in the C200D side of circuit 341, this test determines if the short is caused by the Convertible Top Switch (if equipped).

39. Knowing the short to ground is in the harness, this step isolates the fault to either circuit 75 or circuit 341.

Diagnostic Aids

If the only DTC that flashes is a "History" code (DTC 33), the problem may be intermittent. Try performing the test shown while "wiggling" wiring and connectors; this can often cause the fault to appear. Check for poor connections at the BCM connector, which could cause an open or an intermittent fault. Refer to "Intermittent/History DTCs" near the beginning of this Section.