REAR VIEW MONITOR SYSTEM(for Navigation Receiver Type) Image from Camera for Rear View Monitor is Abnormal

DESCRIPTION

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

WIRING DIAGRAM

*a	Shielded
*b	Rear Television Camera Assembly
*c	Navigation Receiver Assembly

CAUTION / NOTICE / HINT

PROCEDURE

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

   
   

   1. Disconnect the G42 navigation receiver assembly connector.

   2. Disconnect the V21 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 G42-11 (CA+) - V21-6 (CB+) Always Below 1 Ω G42-12 (V+) - V21-3 (CV+) Always Below 1 Ω G42-23 (CGND) - V21-5 (CGND) Always Below 1 Ω G42-24 (V-) - V21-2 (CV-) Always Below 1 Ω G42-11 (CA+) or V21-6 (CB+) - Body ground Always 10 kΩ or higher G42-12 (V+) or V21-3 (CV+) - Body ground Always 10 kΩ or higher G42-23 (CGND) or V21-5 (CGND) - Body ground Always 10 kΩ or higher G42-24 (V-) or V21-2 (CV-) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR

   OK

2. CHECK NAVIGATION RECEIVER ASSEMBLY

   
   
   1. 

      *a	Component with harness connected (Navigation Receiver Assembly)

      Remove the navigation 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 G42-23 (CGND) - Body ground Always Below 1 Ω G42-24 (V-) - 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 G42-11 (CA+) - Body ground Engine switch on (ACC) 5.5 to 7.05 V

      Result
      Proceed to OK NG

   
   

   NG

   REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

   OK

3. CHECK REAR TELEVISION CAMERA ASSEMBLY

   
   

   1. Remove the navigation receiver assembly with its connectors still connected.

      Click here

      

      *a	Component with harness connected (Navigation Receiver Assembly)	*b	Waveform 1
      *c	Waveform 2	*d	Synchronization Signal
      *e	Video Waveform	-	-

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

      Tech Tips

      
      

      • A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the navigation 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)	G42-12 (V+) - G42-23 (CGND)
      Tool Setting	200 mV/DIV., 50 μsec./DIV.
      Condition	Waveform 1: Engine switch on (IG), shift lever in R, camera lens not covered, displaying an image Waveform 2: Engine switch on (IG), 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 NAVIGATION 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.

      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 NAVIGATION RECEIVER ASSEMBLY Click here