AIRBAG SYSTEM, Diagnostic DTC:B166C/4A, B166F/4A

DTC Code DTC Name
B166C/4A Front Door Pressure Sensor RH
B166F/4A Front Door Pressure Sensor Threshold Malfunction (RH)

DESCRIPTION

The side collision sensor RH circuit consists of the airbag ECU assembly, door side airbag sensor RH, side airbag sensor assembly RH and rear airbag sensor RH.

The door side airbag sensor RH, side airbag sensor assembly RH and rear airbag sensor RH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbags and pretensioners should be deployed.

These DTCs are stored when a malfunction is detected in the door side airbag sensor RH.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B166C/4A Front Door Pressure Sensor RH

Either condition is met:


  • A door side airbag sensor RH malfunction

  • An airbag ECU assembly malfunction

  • Door side airbag sensor RH

  • Airbag ECU assembly

 Comes on Not applicable
B166F/4A Front Door Pressure Sensor Threshold Malfunction (RH)

Either condition is met:


  • A door side airbag sensor RH malfunction

  • An airbag ECU assembly malfunction

  • Door side airbag sensor RH

  • Airbag ECU assembly

 Comes on Not applicable

WIRING DIAGRAM

B004CE4E53
*a Airbag ECU Assembly
*b Rear Airbag Sensor RH
*c Door Side Airbag Sensor RH
B004CE4E55
*a Airbag ECU Assembly
*b Rear Airbag Sensor LH
*c Door Side Airbag Sensor LH

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

PROCEDURE


  1. CHECK DOOR SIDE AIRBAG SENSOR RH


    1. B004AAYC15
      *1 Door Side Airbag Sensor LH
      *2 Rear Airbag Sensor RH

      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 door side airbag sensor RH with LH and connect the connectors.

    4. Connect the cable to 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 B166C/4A or B166F/4A is output. A
      DTC B167A/5A or B167E/5A is output. B
      DTCs B166C/4A, B166F/4A, B167A/5A and B167E/5A are not output. C

      Tech Tips

      Codes other than DTCs B166C/4A, B166F/4A, B167A/5A and B167E/5A 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 door side airbag sensor RH and LH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE DOOR SIDE AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here