Repairs and Inspections Required After a Collision: Service and Repair

SUPPLEMENTAL RESTRAINT SYSTEM: OCCUPANT CLASSIFICATION SYSTEM: PRECAUTION

NOTICE:
Some systems need to be initialized after reconnecting the negative (-) battery terminal Repair Instruction - Initialization.

1. INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT

(a) Perform zero point calibration and sensitivity check if any of the following conditions apply.

- The occupant classification ECU is replaced.

- The passenger airbag ON/OFF indicator indicates OFF when the front passenger seat is not occupied.

- The vehicle is brought to the workshop for repair due to an accident or a collision.

Other Procedures

(a) When the airbag has not deployed, confirm the DTCs by checking the SRS warning light. If there is any malfunction in the SRS airbag system, perform troubleshooting.

(b) When any of the airbags have deployed, replace the airbag sensors and check the installation condition.

NOTICE:
- Malfunction symptoms of the SRS are difficult to confirm, so DTCs are the most important source of information when troubleshooting. When troubleshooting the SRS, always check for DTCs before disconnecting the battery.
- Even in the case of a minor collision that does not cause the SRS to deploy, the following components of the SRS should be inspected: the steering pad, front passenger airbag assembly, driver side knee airbag assembly, front passenger side knee airbag assembly, center airbag sensor assembly, front airbag sensor, front seat inner belt assembly, seat position airbag sensor, occupant classification ECU, front seat side airbag assembly, rear seat side airbag assembly, side airbag sensor, curtain shield airbag assembly, rear airbag sensor, front seat outer belt assembly, and rear seat outer belt assembly.
- Before beginning repairs, remove the airbag sensors if any kind of shock is likely to occur to the airbag sensor during the operation.
- Never use SRS parts from another vehicle. When replacing parts, replace them with new ones.
- Never disassemble or repair any of the following parts in order to reuse them. If any of these parts have been dropped, or any defect is found (e.g. cracks, dents or any other defects) in any of the housings, brackets or connectors, replace the part with a new one.
- Steering Pad
- Front Passenger Airbag Assembly
- Driver Side Knee Airbag Assembly
- Front Passenger Side Knee Airbag Assembly
- Front Seat Side Airbag Assembly
- Rear Seat Side Airbag Assembly
- Curtain Shield Airbag Assembly
- Center Airbag Sensor Assembly
- Front Airbag Sensor
- Front Seat Inner Belt Assembly
- Seat Position Airbag Sensor
- Occupant Classification ECU
- Side Airbag Sensor
- Rear Airbag Sensor
- Front Seat Outer Belt Assembly
- Rear Seat Outer Belt Assembly
- Use a volt/ohmmeter with high impedance (10 kOhms/V minimum) for troubleshooting the electrical circuits.
- Information labels are attached near the SRS components. Follow the instructions noted in the caution.
- After work on the SRS is completed, check the SRS warning light Diagnosis System.
- When the negative (-) terminal cable is disconnected from the battery, the memory will be cleared. Because of this, be sure to make a record of the contents memorized in each system before starting work. When work is finished, adjust each system to its previous state. Never use a backup power supply for the purpose of retaining the memory of vehicle electronic systems.
- If the vehicle is equipped with a mobile communication system, refer to the precaution in the INTRODUCTION section.
- Some systems need to be initialized after reconnecting the negative (-) battery terminal Repair Instruction - Initialization.
HINT
In the airbag system, the center airbag sensor assembly, front airbag sensor LH and RH, side airbag sensor LH and RH, and rear airbag sensor LH and RH are collectively referred to as the airbag sensors.