REAR VIEW MONITOR SYSTEM > Reverse Signal Circuit

for Preparation Click here


DESCRIPTION

The radio and display receiver assembly receives a reverse signal from the park/neutral position switch assembly*1 or back-up light switch assembly*2.
  1. *1: for Automatic Transmission
  2. *2: for Manual Transmission

WIRING DIAGRAM


E227687E28


INSPECTION PROCEDURE

1.CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE)


    E222021

  1. Enter the "Function Check/Setting I" mode and select "Vehicle Signal" (Click here).

  1. Check that the display changes between ON and OFF according to the shift lever position.

    OK:
    Shift Lever Position
    		Display
    R
    		ON
    Except R
    		OFF

    HINT:
    This display is updated once per second. As a result, it is normal for the display to lag behind the actual shift lever position.


NG
Go to step 2
OK

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

2.CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    E140414E36

  1. Disconnect the R19 radio and display receiver assembly connector.

  1. Measure the voltage according to the value(s) in the table below.

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    R19-2 (REV) - Body ground
    		Ignition switch ON, shift lever in R
    		7.5 to 14 V
    R19-2 (REV) - Body ground
    		Ignition switch ON, shift lever not in R
    		Below 1 V
    Text in Illustration 
    *a
    		Front view of wire harness connector
    (to Radio and Display Receiver Assembly)
    Result 
    Result
    		Proceed to
    OK
    		A
    NG (for Automatic Transmission)
    		B
    NG (for Manual Transmission)
    		C


B
Go to step 3

C
Go to step 4
A

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY (Click here)  

3.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

  1. Disconnect the R19 radio and display receiver assembly connector.

  1. Disconnect the N4 park/neutral position switch assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    R19-2 (REV) - N4-1 (RL)
    		Always
    		Below 1 Ω
    R19-2 (REV) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY (Click here)  

4.CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY)

  1. Disconnect the R19 radio and display receiver assembly connector.

  1. Disconnect the B1 back-up light switch assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    R19-2 (REV) - B1-1
    		Always
    		Below 1 Ω
    R19-2 (REV) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE BACK-UP LIGHT SWITCH ASSEMBLY (Click here)