AIRBAG SYSTEM, Diagnostic DTC:B16A1/A3

DTC Code DTC Name
B16A1/A3 Pedestrian Detection Sensor Difference

DESCRIPTION

The pedestrian detection sensor circuit (pedestrian detection sensor LH circuit and pedestrian detection sensor RH circuit) consists of the airbag sensor assembly, pedestrian protection sensor LH and pedestrian protection sensor RH.

The pedestrian protection sensor LH and pedestrian protection sensor RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the pop up hood should be deployed.

When the pedestrian protection sensor LH or pedestrian protection sensor RH detects pressure out of the specified range, DTC B16A1/A3 is stored in the airbag sensor assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B16A1/A3 Pedestrian Detection Sensor Difference

  • The pedestrian protection sensor LH or pedestrian protection sensor RH detects pressure out of the specified range.

  • Pedestrian protection sensor LH

  • Pedestrian protection sensor RH

  • Pedestrian detection chamber

  • Airbag sensor assembly

 Does not apply to test/check mode

WIRING DIAGRAM

A0020OYE02

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.

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PROCEDURE


  1. REPLACE PEDESTRIAN PROTECTION SENSOR AND PEDESTRIAN DETECTION CHAMBER


    1. Turn the power switch off.

    2. Disconnect the cable from the negative (-) auxiliary battery terminal.

      CAUTION:

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

    3. Replace the pedestrian protection sensor LH, pedestrian protection sensor RH and pedestrian detection chamber with a new one.

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    4. Connect the cable to the negative (-) auxiliary battery terminal.

      Result
      Proceed to
      NEXT

    NEXT

  2. CHECK DTC


    1. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    2. Turn the power switch off.

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

    4. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      OK
      DTC B16A1/A3 is not output.

      Tech Tips

      Codes other than DTC B16A1/A3 may be output at this time, but they are not related to this check.

      Result
      Result
      OK
      NG

    OK

    END (PEDESTRIAN PROTECTION SENSOR AND PEDESTRIAN DETECTION CHAMBER WERE DEFECTIVE)

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here