Body Control Module: Service and Repair
REMOVALWARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
NOTE: Before replacing a Body Control Module (BCM), use a DRBIII scan tool to retrieve the current settings for the BCM programmable features and the axle ratio/tire size (electronic pinion factor). Refer to the appropriate diagnostic information. These settings should be duplicated in the replacement BCM using the DRBIII scan tool before returning the vehicle to service.
1. Disconnect and isolate the battery negative cable.
2. Remove the Junction Block Module (JBM) from the instrument panel end bracket on the driver side of the vehicle. (Refer to POWER DISTRIBUTION/JUNCTION BLOCK - REMOVAL).
Fig.3 Body Control Module Remove/Install:
3. Remove the four screws that secure the BCM to the Junction Block (JB).
4. Remove the BCM from the JB.
5. If the vehicle is equipped with the optional Remote Keyless Entry (RKE) system, remove the RKE module from the receptacle on the BCM. (Refer to POWER LOCKS/REMOTE KEY-LESS ENTRY MODULE - REMOVAL).
INSTALLATION
WARNING: ON VEHICLES EQUIPPED WITH AIRBAGS, DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, DRIVER AIRBAG, PASSENGER AIRBAG, SEAT BELT TENSIONER, FRONT IMPACT SENSORS, SIDE CURTAIN AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE SUPPLEMENTAL RESTRAINT SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
NOTE: Before replacing a Body Control Module (BCM), use a DRBIII scan tool to retrieve the current settings for the BCM programmable features and the axle ratio/tire size (electronic pinion factor). Refer to the appropriate diagnostic information. These settings should be duplicated in the replacement BCM using the DRBIII scan tool before returning the vehicle to service.
1. If the vehicle is equipped with the optional Remote Keyless Entry (RKE) system, reinstall the RKE module into the receptacle on the BCM. (Refer to POWER LOCKS/REMOTE KEY-LESS ENTRY MODULE - INSTALLATION).
2. Position the BCM onto the Junction Block (JB).
3. Install and tighten the four screws that secure the BCM to the JB. Tighten the screws to 2 Nm (18 in. lbs.).
4. Reinstall the Junction Block Module (JBM) onto the instrument panel end bracket on the driver side of the vehicle. (Refer to POWER DISTRIBUTION/JUNCTION BLOCK - INSTALLATION).
5. Reconnect the battery negative cable.