If only history DTC 32 is set, problem may be intermittent. Try to recreate fault by wiggling wiring and
connectors while performing test. Check for poor connections at all connectors that may be causing intermittent
condition. DTC 32 will clear when fault is corrected and memory is cleared.
Testing
1. Check for short to battery voltage in White wire between headlight and panel dimmer switch and
appropriate interior light. See appropriate wiring diagram in ILLUMINATION/INTERIOR LIGHTS
article. Repair as necessary and retest operation. If White wire checks okay, go to next step.
2. Replace Body Control Module (BCM). See BODY CONTROL MODULE (BCM) under REMOVAL
& INSTALLATION. Retest operation.
DTC 23/33: RETAINED ACCESSORY POWER CIRCUIT SHORTED TO GROUND OR BATTERY
Description
Retained Accessory Power (RAP) is enabled when ignition switch is turned from RUN to OFF position. RAP
will continue to supply power to power windows, radio and front and rear wipers for up to 10 minutes after
ignition switch is turned to OFF position. RAP will shut off if any door is opened during this 10 minute period.
Body Control Module (BCM) provides RAP function through RAP feed circuit to PWR WDO circuit breaker
(25-amp), RADIO fuse (25-amp), WIPERS fuse (25-amp) and RR WIPER fuse (25-amp) located in instrument
panel fuse block. See COMPONENT LOCATIONS .
DTC 23 will set when BCM detects RAP output on RAP feed circuit is either shorted to ground with RAP
enabled or shorted to battery voltage with RAP disabled for more than 50 milliseconds. Code will also set if
there is an open in Red wire between Black 6-pin BCM connector C2 terminal "F" and IGNB fuse (50-amp)
located in underhood fuse block.
When DTC 23 is set, RAP will not operate (shorted to ground) or RAP will not deactivate when door is opened
(shorted to battery). DTC 23 will clear when fault is corrected and memory is cleared.
Diagnostic Aids
If only history DTC 33 is set, problem may be intermittent. Try to recreate fault by wiggling wiring and
connectors while performing test. Check for poor connections at all connectors that may be causing intermittent
condition. DTC 33 will clear when fault is corrected and memory is cleared.
RAP Inoperative
1. Use DVOM connected to ground, backprobe Black 6-pin BCM connector C2 terminal "F" (Red wire).
See COMPONENT LOCATIONS . See Fig. 3 . If battery voltage exists, go to step 3
does not exist, go to next step.
2. Check for open or poor connection in Red wire between Black 6-
pin BCM connector C2 terminal "F" and
IGNB fuse (50-amp) located in underhood fuse block. See WIRING DIAGRAMS . Repair as necessary
2000 Cadillac Escalade
2000 ACCESSORIES & EQUIPMENT' 'Body Control Modules - Escalade, Tahoe & Yukon Denali
Microsoft
October-22-10 7:55:08 PM Page 13 ©
2005 Mitchell Repair Information Company, LLC.
