AIRBAG SYSTEM, Diagnostic DTC:B163A/3A

DTC Code DTC Name
B163A/3A Side Airbag Sensor Assembly No.2 (LH)

DESCRIPTION

The No.2 side airbag sensor assembly LH is composed of a safing sensor, diagnostic circuit, lateral deceleration sensor, etc. When the airbag sensor assembly receives a signal from the lateral deceleration sensor, the airbag sensor assembly judges whether the SRS should be activated.If a malfunction is detected in the side satellite sensor bus circuit, the airbag sensor assembly stores DTC B163A/3A.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B163A/3A Side Airbag Sensor Assembly No.2 (LH)

  • No. 2 side airbag sensor assembly LH malfunction

  • Airbag sensor assembly malfunction

  • No. 2 side airbag sensor assembly LH

  • Airbag sensor assembly

 Does not apply to test/check mode

WIRING DIAGRAM

A01MH94E07
*a BFL+
*b BFL-
*c No.2 Side Airbag Sensor Assembly LH
*d Airbag Sensor Assembly

CAUTION / NOTICE / HINT

Note


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

    Click here

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

    Click here

  • After replacing the airbag sensor assembly, refer to initialization.

    Click here

Tech Tips

To reproduce the DTC, wiggle each of the SRS airbag system connectors, or drive the vehicle on actual city roads or rough roads.

Click here

PROCEDURE


  1. CHECK DTC


    1. Turn the power switch on (IG), and wait for at least 60 seconds.

    2. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    3. Turn the power switch off.

    4. Turn the power switch on (IG), and wait for at least 60 seconds.

    5. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Result Proceed to
      DTC B163A/3A is output A
      DTC B163A/3A is not output B

      Tech Tips

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


    B

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A01MGM2C01
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly

      Turn the power switch off.

    2. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for at least 90 seconds.

    3. Interchange the No. 2 side airbag sensor assembly LH with RH and connect the connectors.

    4. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for at least 2 seconds.

    5. Turn the power switch on (IG), and wait for at least 60 seconds.

    6. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    7. Turn the power switch off.

    8. Turn the power switch on (IG), and wait for at least 60 seconds.

    9. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Result Proceed to
      DTC B162A/2A is output A
      DTC B163A/3A is output B
      DTC B162A/2A and B163A/3A are not output C

      Tech Tips

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

    10. Turn the power switch off.

    11. Disconnect the cable from the negative (-) auxiliary battery terminal and wait for at least 90 seconds.

    12. Return the No. 2 side airbag sensor assembly LH and RH to their original positions and connect the connectors.


    A

    REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH Click here

    B

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    C

    USE SIMULATION METHOD TO CHECK Click here