LIGHTING SYSTEM Footwell Light Circuit

DTC Code DTC Name
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*.

  • *: w/ Console Box Lid

WIRING DIAGRAM

E186107E01

CAUTION / NOTICE / HINT

Tip:

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*.

      Table 1. 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.

      Table 2. 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

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    (Click here)

    INSPECT CONSOLE BOX ILLUMINATION LIGHT ASSEMBLYClick here

  2. INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY

    1. E178952E12

      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.

      Table 3. Result

      Result

      Proceed to

      OK

      A

      NG (for LH)

      B

      NG (for RH)

      C

    REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY

    (Click here)

    REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY

    (Click here)

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

    1. U123769E03

      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
      Table 4. 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)

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  4. INSPECT CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY

    1. E178952E13

      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.

    REPLACE CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY

    (Click here)

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

    1. U123770E02

      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
      Table 5. 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)

    REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    REPAIR OR REPLACE HARNESS OR CONNECTOR