REAR VIEW MONITOR SYSTEM (for Radio and Display Type) Reverse Signal Circuit

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.


WIRING DIAGRAM

A01DZLEE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE)


    1. A01E2KW

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

    2. 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

      Tech Tips

      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

    CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

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

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A01DVDXE32
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the R21 radio and display receiver assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      R21-2 (REV) - Body ground Ignition switch ON, shift lever in R 7.5 to 14 V
      R21-2 (REV) - Body ground Ignition switch ON, shift lever not in R Below 1 V
      Result
      Result Proceed to
      OK A
      NG (for Automatic Transmission) B
      NG (for Manual Transmission) C

    B

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

    C

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - BACK-UP LIGHT SWITCH ASSEMBLY) Click here

    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 R21 radio and display receiver assembly connector.

    2. Disconnect the N1 park/neutral position switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R21-2 (REV) - N1-1 (RL) Always Below 1 Ω
      R21-2 (REV) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for A340E) A
      OK (for A340F) B
      OK (for A750E) C
      OK (for A750F) D
      NG E

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    D

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    E

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    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 R21 radio and display receiver assembly connector.

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      R21-2 (REV) - B1-1 Always Below 1 Ω
      R21-2 (REV) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for R150/R151/R156) A
      OK (for R151F/R156F) B
      NG C

    B

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here