AIRBAG SYSTEM, Diagnostic DTC:B1615/14

DTC Code DTC Name
B1615/14 Front Airbag Sensor LH Malfunction

DESCRIPTION

The front airbag sensor LH consists of a diagnostic circuit and 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 B1615/14 is stored when a malfunction is detected in the front airbag sensor LH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1615/14 Front Airbag Sensor LH Malfunction

Any of the following conditions is met:


  • Front airbag sensor LH malfunction

  • Airbag ECU assembly malfunction

  • Front airbag sensor LH

  • Airbag ECU assembly

 Does not apply to test/check mode
DTC Detection Conditions
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition - - -
Malfunction Status Front airbag sensor LH malfunction ○ -
Airbag ECU assembly malfunction - ○
Detection Time - -
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note


  • 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

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

    Click here

PROCEDURE


  1. CHECK FRONT AIRBAG SENSOR LH


    1. B002E5UC04
      *1 Front Airbag Sensor RH
      *2 Airbag ECU Assembly

      Turn the engine switch off.

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

    3. Interchange the front 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.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the engine switch off.

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

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes

      Tech Tips

      Codes other than DTCs B1610/13 and B1615/14 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTCs B1610/13 and B1615/14 are not output. A
      DTC B1615/14 is output. B
      DTC B1610/13 is output. C

    9. Turn the engine switch off.

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

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


    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    REPLACE AIRBAG ECU ASSEMBLY Click here

    C

    REPLACE FRONT AIRBAG SENSOR LH Click here