REAR VIEW MONITOR SYSTEM Image from Camera for Rear View Monitor is Abnormal

DESCRIPTION

This is the display signal circuit of the rear television camera assembly.

WIRING DIAGRAM

A01X8XGE11
*a Multi-display Assembly
*b Rear Television Camera Assembly
*c Multi-media Module Receiver Assembly
*d GVIF Cable

CAUTION / NOTICE / HINT

Tech Tips

Images may be unclear even in normal conditions if:


  • Noise may occur in the image depending on electrical devices used in the cabin.

  • Noise may occur in the image if accessories that generate radio waves have been installed.

  • The camera screen is frosted over (the image immediately after turning the engine switch on (IG) may be blurred or darker than normal).

  • The camera lens is dirty with snow, mud, etc.

  • A strong beam of light, such as a sunbeam or headlight, hits the camera.

  • It is too dark around the camera (at night etc.).

  • The ambient temperature around the camera is either too high or too low.

  • The vehicle is tilted at a steep angle.

  • The ambient light surrounding the camera is too bright. (When a strong light, such as a sunbeam reflected off the vehicle body, hits the camera, the image may be blurred. This is called the "SMEAR" phenomenon, particular to the CCD camera.)

  • When the camera is used under fluorescent lights, sodium lights, or mercury lights etc., the lights and the illuminated area may appear to flicker.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER - REAR TELEVISION CAMERA AND BODY GROUND)


    1. Disconnect the F77 multi-media module receiver assembly connector.

    2. Disconnect the S5 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
      F77-18 (V+) - S5-2 (CV+) Always Below 1 Ω
      F77-19 (V-) - S5-1 (CV-) Always Below 1 Ω
      F77-39 (CA+) - S5-4 (CB+) Always Below 1 Ω
      F77-40 (CGND) - S5-3 (CGND) Always Below 1 Ω
      F77-12 (GND1) - Body ground Always Below 1 Ω
      F77-18 (V+) - Body ground Always 10 kΩ or higher
      F77-19 (V-) - Body ground Always 10 kΩ or higher
      F77-39 (CA+) - Body ground Always 10 kΩ or higher
      F77-40 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK MULTI-MEDIA MODULE RECEIVER DISPLAY (CA+, CGND)


    1. A01X5ONE02
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

      Reconnect the multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F77-40 (CGND) - 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
      F77-39 (CA+) - F77-40 (CGND) Engine switch on (IG), shift lever in R 5.5 to 7.05 V

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here

    OK

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND)


    1. Reconnect the S5 rear television camera assembly connector.

      A01WYXIE02
      Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

      		 *b Waveform A
      *c Waveform B *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 multi-media module receiver assembly with the connector connected.

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

      Measurement Condition
      Item Content
      Tester No. (Symbol) F77-18 (V+) - F77-40 (CGND)
      Tool Setting 0.2 V/DIV., 50 μS/DIV
      Condition

      Waveform A: Engine starts, shift lever in R (camera lens is not covered, displaying an image)

      Waveform B: Engine starts, shift lever in R (camera lens is covered, blacking out the screen)
      OK
      Waveform is as shown in the illustration.

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

  4. REPLACE HARNESS AND CONNECTOR (GVIF CABLE)


    1. Replace the harness and connector (GVIF cable) with a normally functioning one.


    NEXT

  5. CHECK REAR VIEW MONITOR SYSTEM


    1. Check the operation of rear view monitor system.

      OK
      Rear view monitor system is operated normally.

    OK

    END (GVIF CABLE IS DEFECTIVE)

    NG

  6. REPLACE MULTI-DISPLAY ASSEMBLY


    1. Replace the multi-display assembly with a normally functioning one Click here.


    NEXT

  7. CHECK REAR VIEW MONITOR SYSTEM


    1. Check the operation of rear view monitor system.

      OK
      Rear view monitor system is operated normally.

    OK

    END (MULTI-DISPLAY IS DEFECTIVE)

    NG

    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here