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 rear television camera signal

  • Harness or connector

  • Rear television camera assembly

  • Navigation receiver assembly

WIRING DIAGRAM

E280622E08

PROCEDURE

  1. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > Navigation System > Trouble Codes

    Result

    Proceed to

    No DTC is output

    DTC is output
    No DTC is output

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick hereClick hereClick here

    DTC is output

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

    1. Disconnect the G158 navigation receiver assembly connector.

    2. Disconnect the U6 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

      G158-11 (CA+) - U6-6 (CB+)

      Always

      Below 1 Ω

      G158-12 (V+) - U6-3 (CV+)

      Always

      Below 1 Ω

      G158-24 (V-) - U6-2 (CV-)

      Always

      Below 1 Ω

      G158-23 (CGND) - U6-5 (CGND)

      Always

      Below 1 Ω

      G158-11 (CA+) - Body ground

      Always

      10 kΩ or higher

      G158-12 (V+) - Body ground

      Always

      10 kΩ or higher

      G158-24 (V-) - Body ground

      Always

      10 kΩ or higher

      G158-23 (CGND) - 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. E280624C13

      *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

      G158-23 (CGND) - Body ground

      Always

      Below 1 Ω

      G158-24 (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

      G158-11 (CA+) - Body ground

      Ignition switch ON

      5.5 to 7.05 V

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY

    Click hereClick here

    OK

  4. CHECK REAR TELEVISION CAMERA ASSEMBLY

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

      E280623C09

      *a

      Component with harness connected

      (Navigation Receiver Assembly)

      *b

      Waveform 1

      *c

      Waveform 2

      *d

      Synchronized Signal

      *e

      Video Waveform

      -

      -
      Tip:

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

      OK

      Waveform is as shown in the illustration.

      Item

      Content

      Terminal No. (Symbol)

      G158-12 (V+) - G158-23 (CGND)

      Tool Setting

      200 mV/DIV., 50 μsec./DIV.

      Condition

      Waveform 1: Ignition switch ON, camera lens is not covered, displaying an image

      Waveform 2: Ignition switch ON, camera lens is covered, blacking out the screen
      Tip:

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

    Result

    Proceed to

    OK

    NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click hereClick hereClick hereClick hereClick here

    NG

  5. REPLACE REAR TELEVISION CAMERA ASSEMBLY

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

      Click hereClick here

    Result

    Proceed to

    NEXT
    NEXT

  6. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click here

      Body Electrical > Navigation System > Trouble Codes

    Result

    Proceed to

    No DTC is output

    DTC is output
    No DTC is output

    END (REAR TELEVISION CAMERA ASSEMBLY WAS DEFECTIVE)

    DTC is output

    REPLACE NAVIGATION RECEIVER ASSEMBLY

    Click hereClick here