REAR VIEW MONITOR SYSTEM, Diagnostic DTC:C1622

DTC Code DTC Name
C1622 Back Camera Disconnected

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area
C1622 Back Camera Disconnected Open or short in the rear television camera assembly signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Radio and display receiver assembly

WIRING DIAGRAM

A003P29E04

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the I99 radio and display receiver assembly connector.

    2. Disconnect the R5 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
      I99-11 (CA+) - R5-6 (CB+) Always Below 1 Ω
      I99-12 (V+) - R5-3 (CV+) Always Below 1 Ω
      I99-24 (V-) - R5-2 (CV-) Always Below 1 Ω
      I99-23 (CGND) - R5-5 (CGND) Always Below 1 Ω
      I99-11 (CA+) or R5-6 (CB+) - Body ground Always 10 kΩ or higher
      I99-12 (V+) or R5-3 (CV+) - Body ground Always 10 kΩ or higher
      I99-24 (V-) or R5-2 (CV-) - Body ground Always 10 kΩ or higher
      I99-23 (CGND) or R5-5 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Reconnect the I99 radio and display receiver assembly connector.

    2. A003MGUC03
      *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
      I99-23 (CGND) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      I99-11 (CA+) - I99-23 (CGND) Power switch on (ACC) 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  3. INSPECT REAR TELEVISION CAMERA ASSEMBLY


    1. Reconnect the R5 rear television camera assembly connector.

    2. A003NR7C58
      *a

      Component with harness connected

      (Radio and DisplayReceiver Assembly)
      A003MP3C01
      *a Waveform 1 (camera lens is not covered, displaying an image)
      *b Waveform 2 (camera lens is covered, blacking out the screen)
      *c Synchronization Signal
      *d Video Waveform

      Using an oscilloscope, check the waveform of the rear television camera assembly.

      Tech Tips

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and displayreceiver assembly with the connector connected.

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Measurement terminal I99-12 (V+) - I97-7 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (READY), reverse (R) selected

      Tech Tips


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

      • The video waveform is constantly output when the power switch is on (ACC).

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here