REAR VIEW MONITOR SYSTEM(for Radio and Display Type) Image from Camera for Rear View Monitor is Abnormal

DESCRIPTION

The display signal from the rear television camera assembly is transmitted to the radio and display receiver assembly.

WIRING DIAGRAM

*a	Shielded
*b	Rear Television Camera Assembly
*c	Radio and Display Receiver Assembly

CAUTION / NOTICE / HINT

PROCEDURE

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

   
   

   1. Disconnect the G38 radio and display receiver assembly connector.

   2. Disconnect the P2 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 G38-11 (CA+) - P2-6 (CB+) Always Below 1 Ω G38-12 (V+) - P2-3 (CV+) Always Below 1 Ω G38-23 (CGND) - P2-5 (CGND) Always Below 1 Ω G38-24 (V-) - P2-2 (CV-) Always Below 1 Ω G38-11 (CA+) or P2-6 (CB+) - Body ground Always 10 kΩ or higher G38-12 (V+) or P2-3 (CV+) - Body ground Always 10 kΩ or higher G38-23 (CGND) or P2-5 (CGND) - Body ground Always 10 kΩ or higher G38-24 (V-) or P2-2 (CV-) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY

   
   
   1. 

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

      Remove the radio and display 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 G38-23 (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 G38-11 (CA+) - Body ground Ignition switch ACC 5.5 to 7.05 V

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   OK

3. CHECK REAR TELEVISION CAMERA ASSEMBLY

   
   

   1. Remove the radio and display receiver assembly with its connectors still connected.

      Click here

      

      *a	Component with harness connected (Radio and Display 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 radio and display 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)	G38-12 (V+) - G38-23 (CGND)
      Tool Setting	200 mV/DIV., 50 μsec./DIV.
      Condition	Waveform 1: Ignition switch ON, shift lever in R, camera lens not covered, displaying an image Waveform 2: Ignition switch ON, 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 RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

   NG

4. CHECK REAR TELEVISION CAMERA ASSEMBLY

   
   

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

      
      

      • for A Deck:

        Click here

      • for J Deck:

        Click here

   2. Check if the same malfunction recurs when the rear view monitor screen is displayed.

      OK
      Malfunction does not reoccur (returns to normal).

      Result
      Proceed to OK NG

   
   

   OK

   END (REAR TELEVISION CAMERA ASSEMBLY WAS DEFECTIVE)

   NG

   REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here