MULTI-TERRAIN MONITOR SYSTEM, Diagnostic DTC:C1622

DTC Code DTC Name
C1622 Open or Short Circuit in Back Camera Signal

DESCRIPTION

These DTCs are 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

B001Y4CE06

CAUTION / NOTICE / HINT

Note


  • When "!" mark is displayed on the multi-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 multi-terrain monitor system may be needed Click here.

PROCEDURE


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


    1. Disconnect the F76 parking assist ECU connector.

    2. Disconnect the S30 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
      F76-38 (CV-) - S30-2 (CV-) Always Below 1 Ω
      F76-15 (CV+) - S30-3 (CV+) Always Below 1 Ω
      F76-14 (CB+) - S30-6 (CB+) Always Below 1 Ω
      F76-37 (CGND) - S30-5 (CGND) Always Below 1 Ω
      F76-13 (SGND) - Body ground Always Below 1 Ω
      F76-38 (CV-) or S30-2 (CV-) - Body ground Always 10 kΩ or higher
      F76-15 (CV+) or S30-3 (CV+) - Body ground Always 10 kΩ or higher
      F76-14 (CB+) or S30-6 (CB+) - Body ground Always 10 kΩ or higher
      F76-37 (CGND) or S30-5 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (CV-, CGND)


    1. B001XEHE15
      Text in Illustration
      *a

      Component without harness connected

      (Parking Assist ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      38 (CV-) - Body ground Always 10 kΩ or higher
      37 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

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


    1. B001Y14E02
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F76-37 (CGND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      F76-14 (CB+) - F76-37 (CGND) Engine switch on (IG) 5.5 to 7.05 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

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


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

      B001VLFE05
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

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

      Tech Tips

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

      Item Content
      Terminal No. (Symbol) F76-15 (CV+) - F76-37 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      • Waveform A: Engine switch on (IG), shift lever in R and camera lens is not covered, displaying an image

      • Waveform B: Engine switch on (IG), shift lever in R and camera lens is covered, blacking out the screen
      OK
      Waveform is as shown in the illustration.

    OK

    REPLACE PARKING ASSIST ECU Click here

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here