REAR VIEW MONITOR SYSTEM(for Navigation Receiver Type), Diagnostic DTC:C1622

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

DESCRIPTION

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

DTC No. Detection Item DTC Detection Condition Trouble Area
C1622 Open or Short Circuit in Back Camera Signal Open or short circuit in television camera signal

  • Harness or connector

  • Rear television camera assembly

  • Navigation receiver assembly

WIRING DIAGRAM

B003M80E01
*a Shielded
*b Rear Television Camera Assembly
*c Navigation Receiver Assembly

CAUTION / NOTICE / HINT

Tech Tips

When replacing the navigation receiver assembly, it is necessary to perform the vehicle contract setting for Connected Service.

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTC is output.
      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the G42 navigation receiver assembly connector.

    2. Disconnect the V21 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
      G42-11 (CA+) - V21-6 (CB+) Always Below 1 Ω
      G42-12 (V+) - V21-3 (CV+) Always Below 1 Ω
      G42-23 (CGND) - V21-5 (CGND) Always Below 1 Ω
      G42-24 (V-) - V21-2 (CV-) Always Below 1 Ω
      G42-11 (CA+) or V21-6 (CB+) - Body ground Always 10 kΩ or higher
      G42-12 (V+) or V21-3 (CV+) - Body ground Always 10 kΩ or higher
      G42-23 (CGND) or V21-5 (CGND) - Body ground Always 10 kΩ or higher
      G42-24 (V-) or V21-2 (CV-) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK NAVIGATION RECEIVER ASSEMBLY


    1. B003JXBC02
      *a

      Component with harness connected

      (Navigation Receiver Assembly)

      Remove the navigation receiver assembly with its connectors still connected.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G42-23 (CGND) - Body ground Always Below 1 Ω
      G42-24 (V-) - 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
      G42-11 (CA+) - Body ground Engine switch on (ACC) 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  4. CHECK REAR TELEVISION CAMERA ASSEMBLY


    1. Remove the navigation receiver assembly with its connectors still connected.

      Click here

      B003QTVC01
      *a

      Component with harness connected

      (Navigation Receiver Assembly)

      		 *b Waveform 1
      *c Waveform 2 *d Synchronization Signal
      *e Video Waveform - -

    2. 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 with the connector connected.

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

      Item Content
      Terminal No. (Symbol) G42-12 (V+) - G42-23 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      Waveform 1: Engine switch on (IG), shift lever in R, camera lens not covered, displaying an image

      Waveform 2: Engine switch on (IG), shift lever in R, camera lens covered, blacking out screen
      OK
      Waveform is as shown in the illustration.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

  5. REPLACE REAR TELEVISION CAMERA ASSEMBLY


    1. Replace the rear television camera assembly with a new or known good one.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. CHECK FOR DTC


    1. Clear the DTC.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTC is output.
      Result
      Proceed to
      OK
      NG

    OK

    END (REAR TELEVISION CAMERA ASSEMBLY WAS DEFECTIVE)

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here