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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (B1627-B1656) >> Airbag System >> DTC B163A/3A: Side Airbag Sensor Assembly No. 2 (LH) [02/2017 - 10/2017] >> Procedure

DTC B163A/3A: Side Airbag Sensor Assembly No. 2 (LH) [02/2017 - 10/2017]: Procedure

  1. CHECK FLOOR SIDE AIRBAG SENSOR LH 
    1. Turn the ignition switch off.
      GTY447346Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Floor Side Airbag Sensor RH
      *2 Airbag Sensor Assembly
    2. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Interchange the floor side airbag sensor LH with RH and connect the connectors.
    4. Connect the cable to the negative (-) battery terminal.
    5. Clear the DTCs stored in memory.

      Refer to DTC CHECK / CLEAR [02/2017 - 09/2019]

      Body Electrical > SRS Airbag > Clear DTCs 

    6. Turn the ignition switch off.
    7. Turn the ignition switch ON, and wait for at least 60 seconds.
    8. Check for DTCs.

      Refer to DTC CHECK / CLEAR [02/2017 - 09/2019]

      Body Electrical > SRS Airbag > Trouble Codes 

      HINT: 

      Codes other than DTCs B162A/2A and B163A/3A may be output at this time, but they are not related to this check.

      Result

      Result Proceed to
      DTC B163A/3A is output. A
      DTC B162A/2A is output. B
      DTCs B162A/2A and B163A/3A are not output. C
    9. Turn the ignition switch off.
    10. Disconnect the cable from the negative (-) battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    11. Return the floor side airbag sensor LH and RH to their original positions and connect the connectors.

    Result: 

    REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [02/2017 - 10/2017] 

    Result: 

    REPLACE FLOOR SIDE AIRBAG SENSOR LH. Refer to  REMOVAL [02/2017 - 10/2017] 

    Result: 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [02/2017 - 10/2017]