LIGHTING SYSTEM Footwell Light Circuit

DESCRIPTION

The main body ECU receives information regarding the door lock position switch and ignition switch, and turns on each No. 1 interior illumination light and the console box illumination light*.


WIRING DIAGRAM

A01IPIYE01

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (MAIN BODY ECU)


    • *: w/ Console Box Lid


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Turn the map light switch to the DOOR position.

    5. Enter the following menus: Body / Main Body / Active Test / Step light Operation.

    6. Use the Active Test to check the operation of the No. 1 interior illumination lights and console box illumination light*.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Step light Operation No. 1 interior illumination lights and console box illumination light* ON/OFF -
      OK
      No. 1 interior illumination lights and console box illumination light* come on.
      Result
      Result Proceed to
      OK A
      NG (No. 1 interior illumination lights do not come on) B
      NG (Console box illumination light does not come on)* C

    B

    INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY Click here

    C

    INSPECT CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY Click here

    A

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

  2. INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY


    1. A01IQAQE06

      Remove the No. 1 interior illumination light LH Click here.

    2. Remove the No. 1 interior illumination light RH Click here.

    3. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the light comes on.

      OK
      Light comes on.
      Result
      Result Proceed to
      OK A
      NG (for LH) B
      NG (for RH) C

    B

    REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY Click here

    C

    REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY Click here

    A

  3. CHECK HARNESS OR CONNECTOR (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY - MAIN BODY ECU AND BATTERY)


    1. A01IUFKE05
      Text in Illustration
      *1 for LH
      *2 for RH
      *3

      Front view of wire harness connector

      (to No. 1 Interior Illumination Light Assembly)
      *4

      Front view of wire harness connector

      (to Main Body ECU)

      Disconnect the H79 main body ECU connector.

    2. Disconnect the H76*1 or H77*2 No. 1 interior illumination light connector.


      • *1: for LH

      • *2: for RH

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

      Standard Voltage
      for LH
      Tester Connection Condition Specified Condition
      H76-2 (+) - Body ground Always 11 to 14 V
      for RH
      Tester Connection Condition Specified Condition
      H77-2 (+) - Body ground Always 11 to 14 V
      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      H76-1 (-) - H79-2 (FSPT) Always Below 1 Ω
      H76-1 (-) - Body ground Always 10 kΩ or higher
      for RH
      Tester Connection Condition Specified Condition
      H77-1 (-) - H79-2 (FSPT) Always Below 1 Ω
      H77-1 (-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  4. INSPECT CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY


    1. A01IQAQE07

      Remove the console box illumination light Click here.

    2. Connect the positive (+) lead from the battery to terminal 2 and the negative (-) lead to terminal 1, and check that the light comes on.

      OK
      Light comes on.

    NG

    REPLACE CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY Click here

    OK

  5. CHECK HARNESS OR CONNECTOR (CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY - MAIN BODY ECU AND BATTERY)


    1. A01IUFKE06
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Console Box Illumination Light Assembly)
      *2

      Front view of wire harness connector

      (to Main Body ECU)

      Disconnect the H79 main body ECU connector.

    2. Disconnect the H78 console box interior illumination light connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H78-2 (B) - Body ground Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      H78-1 (E) - H79-2 (FSPT) Always Below 1 Ω
      H78-1 (E) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)