LIGHTING SYSTEM Back-up Light Circuit

DESCRIPTION

The park/neutral position switch turns on when the shift lever is moved to R, causing the back-up lights to illuminate.

WIRING DIAGRAM

B001ZFBE06
A01X0WTE05

PROCEDURE


  1. INSPECT FUSE (BK/UP LP FUSE)


    1. Remove the BK/UP LP fuse from the main body ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      BK/UP LP fuse Always Below 1 Ω

    NG

    REPLACE FUSE

    OK

  2. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      for Automatic Transmission A
      for Manual Transmission B

    B

    INSPECT BACK-UP LIGHT SWITCH Click here

    A

  3. INSPECT PARK/NEUTRAL POSITION SWITCH


    1. A01X2NYE01
      *1 Component without harness connected: (Park/Neutral Position Switch)

      Remove the park/neutral position switch.


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2 (RB) - 1 (RL) Shift lever in R Below 1 Ω
      2 (RB) - 1 (RL) Shift lever not in R 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for A750F Automatic Transmission) B
      NG (for AB60F Automatic Transmission) C

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH Click here

    C

    REPLACE PARK/NEUTRAL POSITION SWITCH Click here

    A

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


    1. A01X6JXE02
      *1 Front view of wire harness connector: (to Park/Neutral Position Switch)

      Disconnect the C24 park/neutral position switch connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C24-2 (RB) - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      for Double Swing Out Type A
      except Double Swing Out Type B

    B

    CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - REAR LIGHT AND BODY GROUND) Click here

    A

  6. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BACK-UP LIGHT AND BODY GROUND)


    1. A01WYU7E02

      Disconnect the C24 park/neutral position switch connector.

    2. for LH:


      1. Disconnect the O8 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C24-1 (RL) - O8-2 Always Below 1 Ω
        O8-1 - Body ground
        O8-2 - Body ground Always 10 kΩ or higher

    3. for RH:


      1. Disconnect the O7 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C24-1 (RL) - O7-2 Always Below 1 Ω
        O7-1 - Body ground
        O7-2 - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - REAR LIGHT AND BODY GROUND)


    1. A01X94YE02

      Disconnect the C24 park/neutral position switch connector.

    2. for LH:


      1. Disconnect the S11 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C24-1 (RL) - S11-2 (B) Always Below 1 Ω
        S11-1 (E) - Body ground
        S11-2 (B) - Body ground Always 10 kΩ or higher

    3. for RH:


      1. Disconnect the S12 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C24-1 (RL) - S12-2 (B) Always Below 1 Ω
        S12-1 (E) - Body ground
        S12-2 (B) - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. INSPECT BACK-UP LIGHT SWITCH


    1. A01XC0BE02
      *1 Component without harness connected: (Back-up Light Switch)

      Remove the back-up light switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 - 2 On (pushed) Below 1 Ω
      1 - 2 Off (released) 10 kΩ or higher

    NG

    REPLACE BACK-UP LIGHT SWITCH ASSEMBLY Click here

    OK

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


    1. A01XBB9E01
      *1 Front view of wire harness connector: (to Back-up Light Switch)

      Disconnect the C39 back-up light switch connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C39-2 - Body ground Ignition switch ON 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  10. CHECK VEHICLE TYPE


    1. Check the vehicle type.

      Result
      Result Proceed to
      for Double Swing Out Type A
      except Double Swing Out Type B

    B

    CHECK HARNESS OR CONNECTOR (BACK-UP LIGHT SWITCH - REAR LIGHT AND BODY GROUND) Click here

    A

  11. CHECK HARNESS AND CONNECTOR (BACK-UP LIGHT SWITCH - BACK-UP LIGHT AND BODY GROUND)


    1. A01X40RE01

      Disconnect the C39 back-up light switch connector.

    2. for LH:


      1. Disconnect the O8 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C39-1 - O8-2 Always Below 1 Ω
        O8-1 - Body ground
        O8-2 - Body ground Always 10 kΩ or higher

    3. for RH:


      1. Disconnect the O7 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C39-1 - O7-2 Always Below 1 Ω
        O7-1 - Body ground
        O7-2 - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. CHECK HARNESS OR CONNECTOR (BACK-UP LIGHT SWITCH - REAR LIGHT AND BODY GROUND)


    1. A01X957E01

      Disconnect the C39 back-up light switch connector.

    2. for LH:


      1. Disconnect the S11 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C39-1 - S11-2 (B) Always Below 1 Ω
        S11-1 (E) - Body ground
        S11-2 (B) - Body ground Always 10 kΩ or higher

    3. for RH:


      1. Disconnect the S12 light connector.

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        C39-1 - S12-2 (B) Always Below 1 Ω
        S12-1 (E) - Body ground
        12-2 (B) - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT INSPECTION PROCEDURE SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR