PARKING ASSIST MONITOR SYSTEM, Diagnostic DTC:C1621, C1622

DTC Code DTC Name
C1621 Back Camera Power Supply Failure
C1622 Open or Short Circuit in Back Camera Signal

DESCRIPTION

This DTC is stored if the parking assist ECU judges as a result of its self check that the signals or signal lines between the parking assist ECU and the rear television camera assembly are not normal.

DTC Code DTC Detection Condition Trouble Area
C1621 Rear television camera power supply failure

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU
C1622 An open or short in the rear television camera signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

WIRING DIAGRAM

A00KT36E01

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the display and navigation module display after the battery terminal disconnected, correct the steering angle neutral point Click here.

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed Click here.

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 - REAR TELEVISION CAMERA) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

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


    1. w/ Tire Carrier:


      1. Disconnect the I2 parking assist ECU connector.

      2. Disconnect the X1 rear television camera assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I2-12 (CV+) - X1-2 (CV+) Always Below 1 Ω
        I2-14 (CB+) - X1-4 (CB+) Always Below 1 Ω
        I2-11 (CV-) - X1-1 (CV-) Always Below 1 Ω
        I2-13 (CGND) - X1-3 (CGND) Always Below 1 Ω
        I2-12 (CV+) - Body ground Always 10 kΩ or higher
        I2-14 (CB+) - Body ground Always 10 kΩ or higher
        I2-11 (CV-) - Body ground Always 10 kΩ or higher
        I2-13 (CGND) - Body ground Always 10 kΩ or higher

    2. w/o Tire Carrier:


      1. Disconnect the I2 parking assist ECU connector.

      2. Disconnect the v1 rear television camera assembly connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        I2-12 (CV+) - v1-2 (CV+) Always Below 1 Ω
        I2-14 (CB+) - v1-4 (CB+) Always Below 1 Ω
        I2-11 (CV-) - v1-1 (CV-) Always Below 1 Ω
        I2-13 (CGND) - v1-3 (CGND) Always Below 1 Ω
        I2-12 (CV+) - Body ground Always 10 kΩ or higher
        I2-14 (CB+) - Body ground Always 10 kΩ or higher
        I2-11 (CV-) - Body ground Always 10 kΩ or higher
        I2-13 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK PARKING ASSIST ECU


    1. A00KTSIE01
      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 Resistancee
      Tester Connection Condition Specified Condition
      I2-11 (CV-) - Body ground Always Below 1 Ω
      I2-13 (CGND) - 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. A00KSLGE05
      Text in Illustration
      *A w/ Tire Carrier
      *B w/o Tire Carrier
      *a

      Front view of wire harness connector

      (to Rear Television Camera Assembly)

      Disconnect the X1*1 or v1*2 rear television camera assembly connector.

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

      Standard Voltage
      w/ Tire Carrier
      Tester Connection Condition Specified Condition
      X1-4 (CB+) - X1-3 (CGND) Ignition switch ON, shift lever in R 5.5 to 7.05 V
      w/o Tire Carrier
      Tester Connection Condition Specified Condition
      v1-4 (CB+) - v1-3 (CGND) Ignition switch ON, shift lever in R 5.5 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 REAR TELEVISION CAMERA ASSEMBLY


    1. Using an oscilloscope, check the waveform.

      A00KXO3E01
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      		 - -
      Measurement Condition
      Item Content
      Tester Connection I2-12 (CV+) - I2-11 (CV-)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition

      • Ignition switch ON, shift lever in R*1

      • Ignition switch ON, shift lever in R, screen blacked out by covering camera lens*2
      OK
      Waveform is as shown in illustration.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG (w/ Tire Carrier) C
      NG (w/o Tire Carrier) D

    B

    REPLACE PARKING ASSIST ECU Click here

    C

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    D

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    A

    REPLACE PARKING ASSIST ECU Click here