Body Control Module Inoperative
- Perform diagnostic system check for Body Control Module (BCM). See BODY CONTROL MODULE DIAGNOSTIC SYSTEM CHECK under TROUBLE SHOOTING. Go to next step.
- Turn ignition switch to ON position. Using a DVOM connected to ground, back probe specified terminals of appropriate BCM harness connector. See BCM POWER SUPPLY & GROUND CHECK
table. If any reading is not as specified, locate and repair short to ground, short to voltage or open condition(s) as necessary. If open or shorted condition does not exist, go to next step. After repairs are completed, go to step 5
. If all readings are as specified, go to step 3
.BCM POWER SUPPLY & GROUND CHECK
Connector Terminal (Wire Color) Reading BCM Connector C1 "D" (Black wire) Continuity To Ground "G" (Orange wire) Battery Voltage "H" (Orange wire) Battery Voltage BCM Connector C2 C10 (Orange/Black wire) Battery Voltage C13 (Pink wire) Battery Voltage D4 (Yellow wire) Battery Voltage - Inspect related wiring harness connectors for poor connection or poor terminal contact. Inspect wiring harness for damage or signs of an intermittent failure condition. If any poor connection or poor terminal contact faults exist, repair fault(s) as necessary. After repairs, go to step 5 .
- Replace Body Control Module (BCM). See BODY CONTROL MODULE under REMOVAL & INSTALLATION. If vehicle is equipped with factory installed Central Theft Deterrent (CTD) anti-theft system, go to CENTRAL THEFT DETERRENT (CTD) RELEARN under PROGRAMMING. Program feature customization settings. See ENTER FEATURE CUSTOMIZATION MODE under PROGRAMMING. Go to next step.
- Record and clear DTCs present. Perform diagnostic system check for BCM. See BODY CONTROL MODULE DIAGNOSTIC SYSTEM CHECK under TROUBLE SHOOTING. Verify any or all repairs are complete.