REAR VIEW MONITOR SYSTEM(for Radio and Display Type), Diagnostic DTC:C1622

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

DESCRIPTION

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

DTC Code DTC Detection Condition Trouble Area
C1622 Open or Short Circuit in television camera signal
  • Harness or connector

  • Rear television camera assembly

  • Radio and display receiver assembly

WIRING DIAGRAM

A004PA8E08
for Sedan
*a Shielded
*b Rear Television Camera Assembly
*c Radio and Display Receiver Assembly
A004RBIE18
for Wagon
*a Shielded
*b Rear Television Camera Assembly
*c Radio and Display Receiver Assembly

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

    A
    B
  2. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the D134 radio and display receiver assembly connector.

    2. Disconnect the G7*1 or M4*2 rear television camera assembly connector.


      • *1: for Sedan

      • *2: for Wagon

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

      Standard Resistance
      for Sedan
      Tester Connection Condition Specified Condition
      D134-11 (CA+) - G7-4 (CB+) Always Below 1 Ω
      D134-12 (V+) - G7-2 (CV+) Always Below 1 Ω
      D134-23 (CGND) - G7-3 (CGND) Always Below 1 Ω
      D134-24 (V-) - G7-1 (CV-) Always Below 1 Ω
      D134-11 (CA+) - Body ground Always 10 kΩ or higher
      D134-12 (V+) - Body ground Always 10 kΩ or higher
      D134-23 (CGND) - Body ground Always 10 kΩ or higher
      D134-24 (V-) - Body ground Always 10 kΩ or higher
      for Wagon
      Tester Connection Condition Specified Condition
      D134-11 (CA+) - M4-4 (CB+) Always Below 1 Ω
      D134-12 (V+) - M4-2 (CV+) Always Below 1 Ω
      D134-23 (CGND) - M4-3 (CGND) Always Below 1 Ω
      D134-24 (V-) - M4-1 (CV-) Always Below 1 Ω
      D134-11 (CA+) - Body ground Always 10 kΩ or higher
      D134-12 (V+) - Body ground Always 10 kΩ or higher
      D134-23 (CGND) - Body ground Always 10 kΩ or higher
      D134-24 (V-) - Body ground Always 10 kΩ or higher

    NG
    OK
  3. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A004U85E02
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      D134-23 (CGND) - Body ground Always Below 1 Ω
      D134-24 (V-) - 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
      D134-11 (CA+) - Body ground Ignition switch ON 5.5 to 7.05 V

    NG
    OK
  4. CHECK REAR TELEVISION CAMERA ASSEMBLY


    1. Using an oscilloscope, check the waveform.

      A004MULE02
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

      *b Waveform 1
      *c Waveform 2 *d Synchronized Signal
      *e Video Waveform - -
      Measurement Condition
      Item Content
      Tester Connection D134-12 (V+) - D134-23 (CGND)
      Tool Setting 200 mV/DIV., 50 μs/DIV.
      Condition
      • Waveform 1: Ignition switch ON, camera lens not covered, displaying an image

      • Waveform 2: Ignition switch ON, camera lens covered, blacking out screen

      OK
      Waveform is as shown in illustration.

      Tech Tips

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


    OK
    NG
  5. REPLACE REAR TELEVISION CAMERA ASSEMBLY


    1. Replace the rear television camera assembly with a new or normally functioning one.



    NEXT
  6. CHECK FOR DTC


    1. Clear the DTCs Click here.

    2. Check for DTCs Click here.


    OK
    NG