WIDE VIEW FRONT MONITOR SYSTEM, Diagnostic DTC:C1681, C1682

DTC Code DTC Name
C1681 Front Camera Feedback Malfunction
C1682 Front Camera Current Malfunction

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
C1681 Front television camera power supply failure

  • Front television camera assembly

  • Harness or connector

  • Parking assist ECU
C1682 An open or short in the front television camera signal circuit

  • Front television camera assembly

  • Harness or connector

  • Parking assist ECU

WIRING DIAGRAM

A00L10LE01

INSPECTION PROCEDURE

Note

When replacing the parking assist ECU, perform initialization of the front television camera.

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.

      Result
      Result Proceed to
      No DTC is output A
      DTC is output B

    B

    CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT TELEVISION CAMERA) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  2. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - FRONT TELEVISION CAMERA)


    1. Disconnect the I2 parking assist ECU connector.

    2. Disconnect the A52 front television camera assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I2-24 (BCV+) - A52-2 (BCV+) Always Below 1 Ω
      I2-23 (BCV-) - A52-4 (BCV-) Always Below 1 Ω
      I2-26 (BCB+) - A52-1 (BCB+) Always Below 1 Ω
      I2-25 (BGND) - A52-3 (BGND) Always Below 1 Ω
      I2-24 (BCV+) - Body ground Always 10 kΩ or higher
      I2-23 (BCV-) - Body ground Always 10 kΩ or higher
      I2-26 (BGND) - Body ground Always 10 kΩ or higher
      I2-25 (BCB+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK PARKING ASSIST ECU


    1. A00KTSIE02
      Text in Illustration
      *a

      Component without harness connected

      (Parking Assist ECU)

      Disconnect the I2 parking assist ECU connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I2-23 (BCV-) - Body ground Always Below 1 Ω
      I2-25 (BGND) - Body ground Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE PARKING ASSIST ECU Click here

    C

    REPLACE PARKING ASSIST ECU Click here

    A

  4. CHECK PARKING ASSIST ECU


    1. A00KSLGE06
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Front Television Camera Assembly)

      Disconnect the A52 front television camera assembly connector.

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A52-1 (BCB+) - A52-3 (BGND) Wide view front monitor display screen displayed 5.8 to 7.05 V
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE PARKING ASSIST ECU Click here

    C

    REPLACE PARKING ASSIST ECU Click here

    A

  5. CHECK FRONT TELEVISION CAMERA ASSEMBLY


    1. Using an oscilloscope, check the waveform.

      A00KXO3E05
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      		 - -
      Measurement Condition
      Item Content
      Terminal No. (Symbol) I2-24 (BCV+) - I2-23 (BCV-)
      Tool Setting

      • 0.2 V/DIV., 20 ms/DIV.*1

      • 0.2 V/DIV., 50 ms/DIV.*2
      Condition

      • Wide view front monitor display screen displayed*1

      • Camera lens covered to make image black while wide view front monitor display screen displayed*2
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE PARKING ASSIST ECU Click here

    C

    REPLACE FRONT TELEVISION CAMERA ASSEMBLY Click here

    A

    REPLACE PARKING ASSIST ECU Click here