LIGHTING SYSTEM Door Courtesy Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives the door courtesy light switch signal to control the courtesy light.

WIRING DIAGRAM

A01NDU3E01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK OPERATION


    1. Check the operation of each courtesy light.

      Result
      Result Proceed to
      Front courtesy light LH does not comes on A
      Front courtesy light RH does not comes on B
      Rear courtesy light LH does not comes on C
      Rear courtesy light RH does not comes on D

    B

    CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) Click here

    C

    CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Click here

    D

    CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) Click here

    A

  2. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. A01NE6ME01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))

      Disconnect the F12 main body ECU (multiplex network body ECU) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F12-1 (FLCL) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  3. CHECK HARNESS AND CONNECTOR (BATTERY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. A01NH40E01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Instrument Panel Junction Block Assembly)

      Disconnect the 2D instrument panel junction block assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2D-11 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A01NHUME01
      Text in Illustration
      *1

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      Remove the instrument panel junction block assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2D-11 - A-3 (FRCL) Always Below 1 Ω
      2D-11 - Body ground Always 10 kΩ or higher

    3. Check that the courtesy light comes on.

      OK
      Courtesy light comes on.

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

    OK

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

  5. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. A01NE6ME02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))

      Disconnect the F12 main body ECU (multiplex network body ECU) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F12-4 (LCYL) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  6. CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. A01NHGDE01
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Main Body ECU (Multiplex Network Body ECU))

      Disconnect the F14 main body ECU (multiplex network body ECU) connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F14-1 (RCYL) - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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