PARKING ASSIST MONITOR SYSTEM(for Camera built-in ECU) Reverse Signal Circuit

DESCRIPTION

The navigation receiver assembly*1 or radio and display receiver assembly*2 receives a reverse signal from the park/neutral position switch assembly*3 or back-up light switch assembly*4.


WIRING DIAGRAM

A01CX39E04
A01CX39E03

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK VEHICLE SIGNAL (DISPLAY CHECK MODE)


    1. A01CW4O

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

    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 (for Navigation Receiver Type, except Manual Transaxle)
      NG (for Navigation Receiver Type, for Manual Transaxle)
      NG (for Radio and Display Type, except Manual Transaxle)
      NG (for Radio and Display Type, for Manual Transaxle)

    OK

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

    NG (for Navigation Receiver Type, for Manual Transaxle)

    INSPECT BACK-UP LIGHT SWITCH ASSEMBLY Click here

    NG (for Radio and Display Type, except Manual Transaxle)

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    NG (for Radio and Display Type, for Manual Transaxle)

    INSPECT BACK-UP LIGHT SWITCH ASSEMBLY Click here

    NG (for Navigation Receiver Type, except Manual Transaxle)

  2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Remove the park/neutral position switch assembly.

      for U760E:

      Click here

      for U660F:

      Click here

      for K111:

      Click here

    2. Inspect the park/neutral position switch assembly.

      for U760E:

      Click here

      for U660F:

      Click here

      for K111:

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for U660F REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for U760E REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for K111 REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the B36 park/neutral position switch assembly connector.

    2. Disconnect the G139 navigation receiver assembly connector.

    3. 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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B36-2 (RL) - G139-2 (REV) Always Below 1 Ω
      B36-2 (RL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT BACK-UP LIGHT SWITCH ASSEMBLY


    1. Remove the back-up light switch assembly.

      for EA64F:

      Click here

      for EB61F:

      Click here

    2. Inspect the back-up light switch assembly.

      for EA64F:

      Click here

      for EB61F:

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EA64F REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here
    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EB61F REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH ASSEMBLY - NAVIGATION RECEIVER ASSEMBLY AND BATTERY)


    1. Disconnect the B35 back-up light switch assembly connector.

    2. Disconnect the G139 navigation receiver assembly connector.

    3. 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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B35-1 - G139-2 (REV) Always Below 1 Ω
      B35-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  6. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. Remove the park/neutral position switch assembly.

      for U760E:

      Click here

      for U760F:

      Click here

      for U660F:

      Click here

      for K111:

      Click here

      for K111F:

      Click here

    2. Inspect the park/neutral position switch assembly.

      for U760E:

      Click here

      for U760F:

      Click here

      for U660F:

      Click here

      for K111:

      Click here

      for K111F:

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for U760E: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for U760F: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for U660F: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for K111: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here
    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY for K111F: REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the B36 park/neutral position switch assembly connector.

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

    3. 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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B36-2 (RL) - G143-2 (REV) Always Below 1 Ω
      B36-2 (RL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. INSPECT BACK-UP LIGHT SWITCH ASSEMBLY


    1. Remove the back-up light switch assembly.

      for EA64:

      Click here

      for EA64F:

      Click here

      for EB61:

      Click here

      for EB61F:

      Click here

      for EB63F:

      Click here

    2. Inspect the back-up light switch assembly.

      for EA64:

      Click here

      for EA64F:

      Click here

      for EB61:

      Click here

      for EB61F:

      Click here

      for EB63F:

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EA64: REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here
    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EA64F: REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here
    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EA61: REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here
    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EA61F: REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here
    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY for EA63F: REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the B35 back-up light switch assembly connector.

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

    3. 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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      B35-1 - G143-2 (REV) Always Below 1 Ω
      B35-1 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR