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

DESCRIPTION

This is the display signal circuit between the radio and display receiver assembly and the rear television camera assembly.

WIRING DIAGRAM

A002PABE12

PROCEDURE


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


    1. Disconnect the H123 radio and display receiver assembly connector.

    2. Disconnect the S13 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
      H123-11 (CA+) - S13-6 (CB+) Always Below 1 Ω
      H123-12 (V+) - S13-3 (CV+) Always Below 1 Ω
      H123-23 (CGND) - S13-5 (CGND) Always Below 1 Ω
      H123-24 (V-) - S13-2 (CV-) Always Below 1 Ω
      H123-11 (CA+) - Body ground Always 10 kΩ or higher
      H123-12 (V+) - Body ground Always 10 kΩ or higher
      H123-23 (CGND) - Body ground Always 10 kΩ or higher
      H123-24 (V-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A002P18E02
      Text in Illustration
      *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
      H123-23 (CGND) - Body ground Always Below 1 Ω
      H123-24 (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
      H123-11 (CA+) - Body ground Ignition switch ON 5.5 to 7.05 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY


    1. Using an oscilloscope, check the waveform.

      A002PJXE02
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

      		 *b Waveform 1
      *c Waveform 2 *d Synchronized Signal
      *e Video Waveform - -
      Measurement Condition
      Item Content
      Tester Connection H123-12 (V+) - H123-23 (CGND)
      Tool Setting 200 mV/DIV., 50 μs/DIV.
      Condition

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

      • Waveform 2: Ignition switch ON, camera lens covered, blacking out screen
      OK
      Waveform is as shown in illustration.

      Tech Tips

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


    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here