REAR VIEW MONITOR SYSTEM 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

A002MN7E32
A002PHBE08
for 1WW Engine
*a REV
*b Back-up Light Switch Assembly
*c Radio and Display Receiver Assembly

PROCEDURE


  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)


    1. A002QHB

      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.


    OK

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

    NG

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A002OGXE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the H105 radio and display receiver assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H105-2 (REV) - Body ground Ignition switch ON, shift lever in R 7.5 to 14 V
      H105-2 (REV) - Body ground Ignition switch ON, shift lever not in R Below 1 V
      Result
      Result Proceed to
      OK A
      NG (except Manual Transaxle) B
      NG (for Manual Transaxle, except 1WW Engine) C
      NG (for Manual Transaxle, for 1WW Engine) D

    A

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    C

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

    D

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

    B

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


    1. Disconnect the H105 radio and display receiver assembly connector.

    2. Disconnect the C23 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
      H105-2 (REV) - C23-2 (RL) Always Below 1 Ω
      H105-2 (REV) - Body ground Always 10 kΩ or higher

    OK

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the H105 radio and display receiver assembly connector.

    2. Disconnect the C7 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
      H105-2 (REV) - C7-1 (RL) Always Below 1 Ω
      H105-2 (REV) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (for EC61) A
      OK (for EC62) B
      OK (for EA65) C
      NG D

    A

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    B

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    C

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    D

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the H105 radio and display receiver assembly connector.

    2. Disconnect the D4 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
      H105-2 (REV) - D4-1 (RL) Always Below 1 Ω
      H105-2 (REV) - Body ground Always 10 kΩ or higher

    OK

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR