AIRBAG SYSTEM PRECAUTION

CAUTION:


  • This vehicle is equipped with a Supplemental Restraint System (SRS), which consists of a horn button assembly, instrument panel passenger airbag, curtain shield airbag, front seat airbag, rear seat airbag, lower No. 1 instrument panel airbag, lower No. 2 instrument panel airbag, front seat outer belt, rear seat 3 point type outer belt, center airbag sensor assembly, front airbag sensor, side airbag sensor, rear airbag sensor and seat position airbag sensor. Failure to carry out service procedures in the correct sequence could cause SRS parts to unexpectedly deploy and possibly lead to serious injuries. Furthermore, if a mistake is made when servicing SRS parts, they may fail to operate when required. Before performing servicing (including installation/removal, inspection and replacement of parts), be sure to read the following precautions.

  • Before starting work, wait at least 90 seconds after the engine switch is turned off and after the cable is disconnected from the negative (-) battery terminal (SRS parts are equipped with a backup power source. If work is started within 90 seconds of turning the engine switch off and disconnecting the cable from the negative (-) battery terminal, SRS parts may deploy).

  • Do not expose SRS parts directly to hot air or flames.

Note


  • Malfunction symptoms of SRS parts are difficult to confirm. DTCs are the most important source of information when troubleshooting. During troubleshooting, always confirm DTCs before disconnecting the cable from the negative (-) battery terminal.

  • For minor collisions where SRS parts do not deploy, always inspect the SRS parts.

  • Before performing repairs, remove the airbag sensors if any kind of impact is likely to occur to an airbag sensor during repairs.

  • Never use SRS parts from another vehicle. When replacing SRS parts, replace them with new ones.

  • Never disassemble or attempt to repair SRS parts.

  • If an SRS part has been dropped, or if there are any cracks, dents or other defects in the case, bracket or connector, replace the SRS part with a new one.

  • Use an ohmmeter/voltmeter with high impedance (10 kΩ/V minimum) for troubleshooting the electrical circuits.

  • Information labels are attached to the periphery of SRS parts. Follow the cautions and instructions on the labels.

  • After work on the SRS is completed, perform the SRS warning light check Click here.

  • When the cable is disconnected from the negative (-) battery terminal, the memory settings of each system are cleared. Because of this, be sure to write down the settings of each system before starting work. When work is finished, reset the settings of each system as before. Never use a backup power supply from outside the vehicle to avoid clearing the memory in a system.

  • If the vehicle is equipped with a mobile communication system, refer to the Precaution in the Introduction section.

  • After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work Click here.

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected Click here.

Tech Tips

In the airbag system, the center airbag sensor assembly, front airbag sensor LH and RH, side airbag sensor assembly LH and RH, and rear airbag sensor LH and RH are collectively referred to as the airbag sensors.


  1. HANDLING PRECAUTIONS FOR AIRBAG SENSORS


    1. Before starting the following operations, wait for at least 90 seconds after disconnecting the cable from the negative (-) battery terminal.


      1. Replacement of the airbag sensors.

      2. Adjustment of the front/rear doors of the vehicle equipped with side airbags and curtain shield airbags (fitting adjustment).

    2. When connecting or disconnecting the airbag sensor connectors, make sure that each sensor is installed in the vehicle.

    3. Do not use airbag sensors which have been dropped during operation or transportation.

    4. Do not disassemble the airbag sensors.

  2. INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT


    1. 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.

    2. When any of the airbags have deployed, replace the related airbag sensor and inspect its normal operation.