REAR VIEW MONITOR SYSTEM, Diagnostic DTC:C1622

DTC Code DTC Name
C1622 Back Camera Disconnected

DESCRIPTION

This DTC is stored if the navigation receiver assembly judges that the signals or signal lines between the navigation receiver assembly, and the 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 television camera assembly signal circuit

  • Harness or connector

  • Television camera assembly

  • Navigation receiver assembly

WIRING DIAGRAM

A01MHNXE02

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the G106 navigation receiver assembly connector.

    2. Disconnect the P25 television camera assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G106-11 (CA+) - P25-6 (CB+) Always Below 1 Ω
      G106-12 (V+) - P25-3 (CV+) Always Below 1 Ω
      G106-24 (V-) - P25-2 (CV-) Always Below 1 Ω
      G106-23 (CGND) - P25-5 (CGND) Always Below 1 Ω
      G106-11 (CA+) - Body ground Always 10 kΩ or higher
      G106-12 (V+) - Body ground Always 10 kΩ or higher
      G106-24 (V-) - Body ground Always 10 kΩ or higher
      G106-23 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT NAVIGATION RECEIVER ASSEMBLY


    1. Reconnect the navigation receiver assembly connector.

    2. A01MJVSC86
      *a

      Component with harness connected

      (Navigation Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G106-24 (V-) - Body ground Always Below 1 Ω
      G106-23 (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
      G106-11 (CA+) - G106-23 (CGND) Power switch ACC 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  3. INSPECT TELEVISION CAMERA ASSEMBLY RR


    1. Reconnect the P25 television camera assembly connector.

    2. A01MJVSC90
      *a

      Component with harness connected

      (Navigation Receiver Assembly)
      A01MG2UC09
      *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 television camera assembly.

      Tech Tips

      A waterproof connector is used for the television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly with the connector connected.

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Measurement terminal G106-12 (V+) - G106-24 (V-)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), shift lever in R

      Tech Tips


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

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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    REPLACE TELEVISION CAMERA ASSEMBLY RR Click here