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 terminals and wait at least three 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.
- The diagnosis sensor unit must always be installed with the arrow mark "<==" pointing toward the front of the vehicle for proper operation.
- When replacing the air bag diagnosis sensor unit, always check with the parts department for he latest parts information. Installing an incorrect air bag diagnosis sensor unit may or may not cause the air bag warning lamp to illuminate and may cause incorrect deployment of the supplemental air bags and seat belt pre-tensioner in a collision resulting in serious personal injury or death.










1.Always check the air bag diagnosis sensor unit ECU discriminated number (identification number) using
CONSULT.
2.Disconnect the negative and positive battery terminals, then wait at least three minutes.
3.Disconnect the harness connectors for the following SRS components: Refer to (Side Curtain Air
Bag Module), (Front Seat Belt Pre-tensioner), Front Seat (Side Air Bag Module).
4.Remove the rear seatback assembly. Component Parts Drawing.
5.Remove center console assembly.
6.Disconnect diagnosis sensor unit connectors.
7.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. SRS Operation Check.

CAUTION:
- After replacing the air bag diagnosis sensor unit, confirm using CONSULT that the ECU discriminated number (identification number) of the new replacement air bag diagnosis sensor unit matches the ECU discriminated number (identification number) of the replaced (old) air bag diagnosis sensor unit.
NOTE:
- If the ECU discriminated number of the new replacement air bag diagnosis sensor unit differs from the ECU
discriminated number of the replaced air bag diagnosis sensor unit, reconfirm the parts information and verify that the correct air bag diagnosis sensor unit was installed.