Air Bag Control Module: Service and Repair

DIAGNOSIS SENSOR UNIT

Removal and Installation

REMOVAL

WARNING: Before disconnecting diagnosis sensor unit harness connector(s), be sure to disconnect harness connectors from air bag modules and front seat belt pre-tensioner to prevent deployment by static electricity.

CAUTION:
- Before servicing the SRS, turn the ignition switch OFF, disconnect both battery cables and wait at least 3 minutes.
- Do not disassemble diagnosis sensor unit.
- Do not use old bolts; replace with new bolts.
- Replace the diagnosis sensor unit if it has been dropped or sustained an impact.
- Check diagnosis sensor unit bracket to make sure it is free of deformities, dents, cracks or rust. If it shows any visible signs of damage, replace with new one.

Exploded View SRS-44:

- The diagnosis sensor unit must always be installed with the arrow mark pointing toward the front of the vehicle for proper operation.

1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Disconnect the harness connectors for each air bag module and seat belt pre-tensioner.
3. Remove center console assembly.
4. Disconnect diagnosis sensor unit connectors.
5. Remove the bolts and the ground bolt, then remove the diagnosis sensor unit.

INSTALLATION
Installation is in the reverse order of removal.
- The diagnosis sensor unit must always be installed with the arrow mark pointing toward the front of the vehicle.
- Follow the tightening sequence 1,2,3,4 as shown.
- After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRS-18, "SRS Operation Check". [1][2]Component Tests and General Diagnostics

ECU DISCRIMINATED NO.
After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is correct for the vehicle as equipped. Refer to SRS-16, "CONSULT-III Function (AIR BAG)". Scan Tool Testing and Procedures