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PEDESTRIAN PROTECTION SYSTEM, Diagnostic DTC:B16A5, B16A9

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DTC Code DTC Name
B16A5 Pedestrian Protection Sensor Malfunction (LH)
B16A9 Pedestrian Protection Sensor Drift Check (LH)
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DESCRIPTION

The pedestrian detection sensor LH circuit consists of the pedestrian detection ECU assembly and pedestrian protection sensor LH.

The pedestrian protection sensor LH detects impacts to the vehicle and sends signals to the pedestrian detection ECU assembly to determine if the pop up hood should be deployed.

DTC B16A5 and B16A9 is stored when a malfunction is detected in the pedestrian protection sensor LH.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B16A5 Pedestrian Protection Sensor Malfunction (LH)

Either condition is met:


  • A pedestrian protection sensor LH malfunction

  • A pedestrian detection ECU assembly malfunction

  • Pedestrian detection chamber assembly (pedestrian protection sensor LH)

  • Pedestrian detection ECU assembly

 Comes on Not applicable
B16A9 Pedestrian Protection Sensor Drift Check (LH) Pressure equal to or greater than the specified value is detected in the pedestrian detection chamber assembly (pedestrian protection sensor LH).

  • Pedestrian detection chamber assembly (pedestrian protection sensor LH)

  • Pedestrian detection ECU assembly

 Comes on Not applicable
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WIRING DIAGRAM

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

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PROCEDURE


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    REPLACE PEDESTRIAN DETECTION CHAMBER ASSEMBLY (PEDESTRIAN PROTECTION SENSOR)


    1. Turn the power switch off.

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

    3. Replace the pedestrian detection chamber assembly (pedestrian protection sensor) with a new one.

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      Result
      Proceed to
      NEXT

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    CHECK DTC


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

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

    3. Clear the DTCs stored in memory.

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      1. Body Electrical > Pedestrian Protection > Clear DTCs


    4. Turn the power switch off.

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

    6. Check for DTCs.

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      1. Body Electrical > Pedestrian Protection > Trouble Codes


      Result
      Result Proceed to
      DTCs B16A5 and B16A9 are not output A
      DTC B16A5 or B16A9 is output B
      Tip:

      Codes other than DTC B16A5 and B16A9 may be output at this time, but they are not related to this check.


    • A

      END (PEDESTRIAN DETECTION CHAMBER ASSEMBLY [PEDESTRIAN PROTECTION SENSOR] WAS DEFECTIVE)

    • B

      REPLACE PEDESTRIAN DETECTION ECU ASSEMBLYClick here