Air Bag Control Module: Service and Repair

REMOVAL

WARNING:
- The air bag Electronic Crash Sensor (ECS) orientation is critical for correct system operation. If a vehicle equipped with an air bag Supplemental Restraint System (SRS) has been involved in a collision in which the right cowl A-pillar area has been damaged, inspect the mounting and bracket for deformation. If damaged, the (ECS) must be replaced whether or not the air bags have deployed. In addition, make sure the area of the (ECS) mounting is restored to its original condition.
- If installing a new air bag module, always install a new air bag electronic crash sensor (ECS) module.
- To avoid accidental deployment and possible personal injury, the backup power supply must be depleted before repairing or replacing any front or side air bag supplemental restraint system (SRS) components and before servicing, replacing, adjusting or striking components near the front or side air bag sensors, such as doors, instrument panel, console, door latches, strikers, seats and hood latches.

The side air bag sensors are located at or near the base of the B-pillar.

To deplete the backup power supply energy, disconnect the battery ground cable and wait at least one minute. Be sure to disconnect auxiliary batteries and power supplies (if equipped).

CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage can result.

NOTE: Repair is made by installing a new part only. If the new part does not correct the condition, install the original part and perform the diagnostic procedure again.

1. Disconnect the battery ground cable and wait at least one minute.







2. Remove the RH sill plate.
3. Position the carpet out of the way.







4. Remove the ECS.
1 Disconnect the ECS electrical connector locking clip.
2 Disconnect the ECS electrical connector.
3 Remove the three retaining screws.
4 Remove the ECS module and bracket.

INSTALLATION







1. Follow the removal procedure in reverse order.

WARNING:
- The air bag Electronic Crash Sensor (ECS) orientation is critical for correct system operation. If a vehicle equipped with an air bag Supplemental Restraint System (SRS) has been involved in a collision in which the right cowl A-pillar area has been damaged, inspect the mounting and bracket for deformation. If damaged, the (ECS) must be replaced whether or not the air bags have deployed. In addition, make sure the area of the (ECS) mounting is restored to its original condition.
- If installing a new air bag module, always install a new air bag electronic crash sensor (ECS) module.
- The tightening torque of the air bag electronic crash sensor (ECS) module bracket retaining screws is critical for correct system operation.

NOTE:
- Make sure to tighten the retaining bolts to specification.
- A repair is made by installing a new part only. If the new part does not correct the condition, install the original part and perform the diagnostic procedure again.

2. Prove out the air bag system.