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.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   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

   
   
   • OKClick here
   • NGClick here
2. Click here

   CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   
   1. 

      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

      Table 1. Text in Illustration

      *a	Component with harness connected (Radio and Display Receiver Assembly)

   
   
   • OKClick here
   • NGClick here
3. Click here

   CHECK REAR TELEVISION CAMERA ASSEMBLY

   
   
   1. 

      Using an oscilloscope, check the waveform.

      Table 2. 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	-	-

      Table 3. 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.

      Tip:

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

   
   
   • OKClick here
   • NGClick here
4. Click here

   REPAIR OR REPLACE HARNESS OR CONNECTOR

5. Click here

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLYClick here

6. Click here

   REPLACE REAR TELEVISION CAMERA ASSEMBLYClick here

7. Click here

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here