PARKING ASSIST MONITOR SYSTEM(w/ Side Monitor System), Diagnostic DTC:C1622

DTC Code DTC Name
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
C1622 An open or short in the rear television camera signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

WIRING DIAGRAM

B001F2KE04

CAUTION / NOTICE / HINT

Note


  • When "System initializing" is displayed on the parking assist ECU after the cable is disconnected from the negative (-) battery terminal, 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 HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA ASSEMBLY AND BODY GROUND)


    1. Disconnect the I7 parking assist ECU connector.

    2. Disconnect the X9*1 or v2*2 rear television camera assembly connector.


      • *1: w/ Tire Carrier

      • *2: w/o Tire Carrier

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

      Standard Resistance
      w/ Tire Carrier
      Tester Connection Condition Specified Condition
      I7-38 (CV-) - X9-2 (CV-) Always Below 1 Ω
      I7-15 (CV+) - X9-3 (CV+) Always Below 1 Ω
      I7-14 (CB+) - X9-6 (CB+) Always Below 1 Ω
      I7-37 (CGND) - X9-5 (CGND) Always Below 1 Ω
      I7-38 (CV-) - Body ground Always 10 kΩ or higher
      I7-15 (CV+) - Body ground Always 10 kΩ or higher
      I7-14 (CB+) - Body ground Always 10 kΩ or higher
      I7-37 (CGND) - Body ground Always 10 kΩ or higher
      w/o Tire Carrier
      Tester Connection Condition Specified Condition
      I7-38 (CV-) - v2-2 (CV-) Always Below 1 Ω
      I7-15 (CV+) - v2-3 (CV+) Always Below 1 Ω
      I7-14 (CB+) - v2-6 (CB+) Always Below 1 Ω
      I7-37 (CGND) - v2-5 (CGND) Always Below 1 Ω
      I7-38 (CV-) - Body ground Always 10 kΩ or higher
      I7-15 (CV+) - Body ground Always 10 kΩ or higher
      I7-14 (CB+) - Body ground Always 10 kΩ or higher
      I7-37 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (CB+, CGND)


    1. B001CQUE03
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the I7 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I7-37 (CGND) - Body ground Always Below 1 Ω
      I7-38 (CV-) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I7-14 (CB+) - Body ground Engine switch on (IG) 5.5 to 7.05 V
      Result
      Proceed to Result
      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

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND)

    B001CF3E01
    Text in Illustration
    *a

    Component with harness connected

    (Parking Assist ECU)

    		 *b Waveform A
    *c Waveform B *d Synchronized Signal
    *e Video Waveform - -

    1. Check the waveform of the rear television camera assembly using an oscilloscope.

      Tech Tips


      • A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly*1 or radio and display receiver assembly*2 with the connector connected.


        • *1: for Navigation Receiver Type

        • *2: for Radio and Display Type

      • The video waveform changes according to the image sent by the rear television camera assembly.

      Item Content
      Terminal No. (Symbol) I7-15 (CV+) - I7-37 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      • Waveform A: Engine switch on (IG), camera lens is not covered, displaying an image

      • Waveform B: Engine switch on (IG), camera lens is covered, blacking out the screen
      OK
      Waveform is as shown in the illustration.
      Result
      Proceed to Result
      OK (for LHD) A
      OK (for RHD) B
      NG (w/ Tire Carrier) C
      NG (w/o Tire Carrier) D

    A

    REPLACE PARKING ASSIST ECU Click here

    B

    REPLACE PARKING ASSIST ECU Click here

    C

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    D

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here