Air Bag Control Module: Service and Repair
REMOVALWARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE AIRBAG CONTROL MODULE CONTAINS THE IMPACT SENSOR, WHICH ENABLES THE SYSTEM TO DEPLOY THE AIRBAGS. NEVER STRIKE OR KICK THE AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF AN AIRBAG CONTROL MODULE IS ACCIDENTALLY DROPPED DURING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN ACCIDENTAL, INCOMPLETE, OR IMPROPER AIRBAG DEPLOYMENT AND POSSIBLE OCCUPANT INJURIES.
1. Disconnect and isolate the battery negative cable. If either of the airbags has not been deployed, wait two minutes for the system capacitor to discharge before further service.
2. If the vehicle is equipped with a manual transmission, remove the center floor console from the floor panel transmission tunnel.
Fig. 5 Airbag Control Module Trim Cover Remove/Install:
3. If the vehicle is equipped with an automatic transmission, remove the two screws that secure the trim cover to the Airbag Control Module (ACM) mounting bracket on the floor panel transmission tunnel and remove the trim cover.
Fig. 6 Airbag Control Module Remove/Install:
4. Loosen the screw that secures each side of the instrument panel center support bracket to the ACM mounting bracket. Do not remove these screws.
5. Remove the two nuts that secure the instrument panel center support bracket to the studs on the lower instrument panel structural support.
6. Disengage the retainer on the instrument panel wire harness take out to the ACM from the retainer hole in the left side of the instrument panel center support bracket.
7. Pull the top of the instrument panel center support bracket rearward and down from the instrument panel studs. Fold it down over the top of the ACM until it is laying flat on the floor panel transmission tunnel.
8. Disconnect the instrument panel wire harness connector for the ACM from the ACM connector receptacle. To disconnect this connector:
a. Slide the red Connector Position Assurance (CPA) lock on the top of the connector toward the side of the vehicle.
b. Depress the connector latch tab and pull the connector straight away from the ACM connector receptacle.
NOTE: Always remove and replace the ACM and its mounting bracket as a unit. Replacement modules include a replacement mounting bracket. Do not transfer the ACM to another mounting bracket.
9. Remove the four screws that secure the ACM mounting bracket to the floor panel transmission tunnel.
10. Remove the ACM, the mounting bracket, and the instrument panel center support bracket from the floor panel transmission tunnel as a unit.
INSTALLATION
WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING COLUMN, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MINUTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNOSIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE PERSONAL INJURY.
THE AIRBAG CONTROL MODULE CONTAINS THE IMPACT SENSOR, WHICH ENABLES THE SYSTEM TO DEPLOY THE AIRBAGS. NEVER STRIKE OR KICK THE AIRBAG CONTROL MODULE, AS IT CAN DAMAGE THE IMPACT SENSOR OR AFFECT ITS CALIBRATION. IF AN AIRBAG CONTROL MODULE IS ACCIDENTALLY DROPPED DURING SERVICE, THE MODULE MUST BE SCRAPPED AND REPLACED WITH A NEW UNIT. FAILURE TO OBSERVE THIS WARNING COULD RESULT IN ACCIDENTAL, INCOMPLETE, OR IMPROPER AIRBAG DEPLOYMENT AND POSSIBLE OCCUPANT INJURIES.
1. Carefully position the Airbag Control Module (ACM), the mounting bracket, and the instrument panel center support bracket onto the floor panel transmission tunnel as a unit. When the ACM is correctly positioned, the arrow on the ACM label will be pointed forward in the vehicle.
2. Install and tighten the four screws that secure the ACM mounting bracket to the floor panel transmission tunnel. Tighten the screws to 14 Nm (125 in. lbs.).
3. With the instrument panel center support bracket still folded down flat on the floor panel transmission tunnel, reconnect the instrument panel wire harness connector for the ACM to the ACM connector receptacle. Be certain that the connector latch and the red Connector Position Assurance (CPA) lock are fully engaged.
4. Fold the top of the instrument panel center support bracket up over the top of the ACM and forward over the studs on the lower instrument panel structural support.
5. Install and tighten the nuts that secure the instrument panel center support bracket to the studs on the lower instrument panel structural support. Tighten the nuts to 14 Nm (125 in. lbs.).
6. Engage the retainer on the instrument panel wire harness take out for the ACM in the retainer hole on the left side of the instrument panel center support bracket.
7. Tighten the screws that secure each side of the instrument panel center support bracket to the ACM mounting bracket. Tighten the screws 14 Nm (125 in. lbs.).
8. If the vehicle is equipped with an automatic transmission, position the ACM trim cover to the ACM mounting bracket on the floor panel transmission tunnel.
9. If the vehicle is equipped with an automatic transmission, install and tighten the two screws that secure the ACM trim cover to the ACM mounting bracket. Tighten the screws to 2.2 Nm (20 in. lbs.).
10. If the vehicle is equipped with a manual transmission, reinstall the center floor console onto the floor panel transmission tunnel.
11. Do not reconnect the battery negative cable at this time. The airbag system verification test procedure should be performed following service of any airbag system component. Airbag System Verification Test