NAVIGATION 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

A01QSE9E01

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

  • Check that the wire harness is properly installed and does not have any sharp bends, pinching or loose connections.

    Click here

PROCEDURE


  1. CHECK VEHICLE SIGNAL (OPERATION CHECK)


    1. A01QTGB

      Enter the "Vehicle Signal Check Mode" screen. Refer to Check Vehicle Signal in Operation Check.

      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.

      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A01QPEBC41
      *a

      Front view of wire harness connector

      (to Radio and Display Receiver Assembly)

      Disconnect the 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
      G143-2 (REV) - Body ground Ignition switch ON, shift lever in R 7.5 to 14 V
      G143-2 (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) C

    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

    B

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


    1. Disconnect the G143 radio and display receiver assembly connector.

    2. Disconnect the B36 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
      G143-2 (REV) - B36-2 (RL) Always Below 1 Ω
      G143-2 (REV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - BATTERY)


    1. A01QU4BC12
      *a

      Front view of wire harness connector

      (to Park/neutral Position Switch Assembly)

      Disconnect the park/neutral position switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      B36-1 (RB) - Body ground Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      OK (for U760F) A
      OK (for U660F) B
      OK (for K111F) C
      OK (for K111) D
      OK (for K114F) E
      NG F

    A

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    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

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    F

    REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    1. Disconnect the G143 radio and display receiver assembly connector.

    2. Disconnect the B35 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
      G143-2 (REV) - B35-1 Always Below 1 Ω
      G143-2 (REV) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - BATTERY)


    1. A01QPNRC07
      *a

      Front view of wire harness connector

      (to Back-up Light Switch Assembly)

      Disconnect the back-up light switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      B35-2 - Body ground Ignition switch ON 11 to 14 V
      Result
      Result Proceed to
      OK (for EB61F) A
      OK (for EB61) B
      OK (for EA64F) C
      OK (for EA64) D
      NG E

    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

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    E

    REPAIR OR REPLACE HARNESS OR CONNECTOR