LIGHTING SYSTEM Door Courtesy Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the front courtesy lights.

WIRING DIAGRAM

A01QCHDE03

CAUTION / NOTICE / HINT

Note

First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (COURTESY LIGHT)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Front Left Door / Active Test.

    5. Enter the following menus: Body Electrical / Front Right Door / Active Test.

    6. Perform the Active Test according to the display on the GTS.


      Body Electrical > Front Left Door > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Courtesy Light Front door courtesy light LH ON/OFF -

      Body Electrical > Front Right Door > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Courtesy Light Front door courtesy light RH ON/OFF -

      Body Electrical > Front Left Door > Active Test
      Tester Display
      Courtesy Light

      Body Electrical > Front Right Door > Active Test
      Tester Display
      Courtesy Light
      OK
      Front courtesy light comes on.
      Result
      Result Proceed to
      OK A
      NG (Front courtesy light RH does not illuminates) B
      NG (Front courtesy light LH does not illuminates) C

    A

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

    C

    CHECK HARNESS AND CONNECTOR (FRONT COURTESY LIGHT LH - FRONT MULTIPLEX NETWORK DOOR ECU LH AND BATTERY) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (FRONT COURTESY LIGHT RH - FRONT MULTIPLEX NETWORK DOOR ECU RH AND BATTERY)


    1. Disconnect the N24 front multiplex network door ECU RH.

    2. A01QAP9C01
      *a

      Front view of wire harness connector

      (to Front Courtesy Light RH)

      Disconnect the front courtesy light RH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      N35-1 - Body ground Battery saving control not operating 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N35-2 - N24-13 (CYL) Always Below 1 Ω
      N35-2 or N24-13 (CYL) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT FRONT COURTESY LIGHT RH


    1. Remove the front courtesy light RH.

      Click here

    2. Inspect the front courtesy light RH.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

    NG

    REPLACE FRONT COURTESY LIGHT RH Click here

  4. CHECK HARNESS AND CONNECTOR (FRONT COURTESY LIGHT LH - FRONT MULTIPLEX NETWORK DOOR ECU LH AND BATTERY)


    1. Disconnect the O4 front multiplex network door ECU LH connector.

    2. A01QAP9C02
      *a

      Front view of wire harness connector

      (to Front Courtesy Light LH)

      Disconnect the front courtesy light LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      O15-1 - Body ground Battery saving control not operating 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O15-2 - O4-13 (CYL) Always Below 1 Ω
      O15-2 or O4-13 (CYL)- Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. INSPECT FRONT COURTESY LIGHT LH


    1. Remove the front courtesy light LH.

      Click here

    2. Inspect the front courtesy light LH.

      Click here

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here

    NG

    REPLACE FRONT COURTESY LIGHT LH Click here