AIRBAG SYSTEM, Diagnostic DTC:B1615

DTC Code DTC Name
B1615 Front Airbag Sensor LH Malfunction

DESCRIPTION

The No. 2 airbag sensor assembly consists of a diagnostic circuit, frontal deceleration sensor, etc.

If the airbag ECU assembly receives signals from the frontal deceleration sensor, it determines whether the SRS should be activated.

DTC B1615 is stored when a malfunction is detected in the No. 2 airbag sensor assembly circuit.

DTC Code DTC Detection Condition Trouble Area
B1615

Either condition is met:


  • A No. 2 airbag sensor assembly malfunction.

  • An airbag ECU assembly malfunction.

  • No. 2 airbag sensor assembly

  • Airbag ECU assembly

WIRING DIAGRAM

A01CIY2E12

INSPECTION PROCEDURE

Note


  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the 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

To perform the simulation method, wiggle each connector of the airbag system or drive the vehicle on various types of roads Click here.

PROCEDURE


  1. CHECK NO. 2 AIRBAG SENSOR ASSEMBLY

    A01CHE8E01
    Text in Illustration
    *1 No. 2 Airbag Sensor Assembly
    *2 Airbag ECU Assembly

    1. Turn the ignition switch off.

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

    3. Temporarily replace the No. 2 airbag sensor assembly with a new one Click here.

    4. Connect the cable to the negative (-) battery terminal, and wait at least 2 seconds.

    5. Turn the ignition switch to ON, and wait at least 60 seconds.

    6. Clear the DTCs stored in memory Click here.

    7. Turn the ignition switch off.

    8. Turn the ignition switch to ON, and wait at least 60 seconds.

    9. Check for DTCs Click here.

      OK
      DTC B1615 is not output.

      Tech Tips

      Codes other than DTC B1615 may be output at this time, but they are not related to this check.


    NG

    REPLACE AIRBAG ECU ASSEMBLY Click here

    OK

    END (NO. 2 AIRBAG SENSOR ASSEMBLY WAS DEFECTIVE)