Air Bag Control Module: Service and Repair

DIAGNOSIS SENSOR UNIT


Removal and Installation


REMOVAL











WARNING:
- Before servicing the SRS, turn the ignition switch off, disconnect both battery terminals and wait at least three minutes.
- Do not use old bolts; replace with new bolts.
- 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.
- Replace diagnosis sensor unit if it has been dropped or sustained an impact.
- Never use air tools or electric tools for servicing.
- When replacing the air bag diagnosis sensor unit, always check with the parts department for the 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 pretensioner 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-III.
2. Disconnect the negative and positive battery terminals, then wait at least three minutes.
3. Disconnect the harness connectors for the following SRS components: Service and Repair (Side curtain air bag module), Service and Repair (Front seat belt pretensioner), Service and Repair (Side air bag module).
4. Remove center console. Removal And Installation Instrument Panel.
5. Disconnect diagnosis sensor unit connectors.
6. Remove bolts from the diagnosis sensor unit.

CAUTION:
- Do not use old bolts; replace with new bolts.
- Check diagnosis sensor unit bracket to ensure it is free of deformities, dents, cracks or rust. If it shows any visible signs of damage, replace with new one.
- Replace diagnosis sensor unit if it has been dropped or sustained an impact.

INSTALLATION
Installation is in the reverse order of removal.
- After the work is completed, perform self-diagnosis to check that no malfunction is detected. Diagnostic Procedure 1.

CAUTION:
- The diagnosis sensor unit must always be installed with the arrow mark pointing toward the front of the vehicle for proper operation.
- Never damage the harness while installing.
- If malfunction is detected by the air bag warning lamp, after repair or replacement of the malfunctioning parts, reset the memory using self-diagnosis or CONSULT-III. Diagnostic Procedure 3.
- After the work is completed, check that no system malfunction is detected by air bag warning lamp.
- After replacing the air bag diagnosis sensor unit, confirm using CONSULT-III 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.