LIGHTING SYSTEM Door Courtesy Light Circuit

DESCRIPTION

The main body ECU controls the front courtesy lights.

WIRING DIAGRAM

A01FET1E02

INSPECTION PROCEDURE

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.

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (COURTESY LIGHT)


    1. Using the GTS, perform the Active Test Click here.

      Front Left Door
      Tester Display Test Part Control Range Diagnostic Note
      Courtesy Light Front door courtesy light LH ON/OFF -
      Front Right Door
      Tester Display Test Part Control Range Diagnostic Note
      Courtesy Light Front door courtesy light RH ON/OFF -
      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

    B

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

    C

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

    A

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

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


    1. Disconnect the Q4 front multiplex network door ECU RH.

    2. Disconnect the Q15 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
      Q15-1 - 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
      Q15-2 - Q4-13 (CYL) Always Below 1 Ω
      Q15-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU RH Click here

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


    1. Disconnect the Q19 front multiplex network door ECU LH connector.

    2. Disconnect the Q30 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
      Q30-1 - 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
      Q30-2 - Q19-13 (CYL) Always Below 1 Ω
      Q30-2 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE FRONT MULTIPLEX NETWORK DOOR ECU LH Click here