LIGHTING SYSTEM Footwell Light Circuit

DESCRIPTION

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

WIRING DIAGRAM

A01G9GYE04

INSPECTION PROCEDURE

Note

If the main body ECU (multiplex network body ECU) is replaced, refer to Service Bulletin.

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    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 / Main Body / Active Test.

    5. Check that the footwell lights come on.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Fr Foot Light Footwell lights ON/OFF Engine switch is turned off just before performing the Active Test.
      OK
      Footwell lights come on.

    NG

    CHECK HARNESS AND CONNECTOR (DOME FUSE - NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) Click here

    OK

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

  2. CHECK HARNESS AND CONNECTOR (DOME FUSE - NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY)


    1. Disconnect the H47 No. 1 interior illumination light assembly LH connector.

    2. Disconnect the H48 No. 1 interior illumination light assembly RH connector.

    3. Disconnect the X14 No. 1 interior illumination light assembly LH connector.*1

    4. Disconnect the W13 No. 1 interior illumination light assembly RH connector.*1

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      H47-2 (B) - Body ground Engine switch off 11 to 14 V
      H48-2 (B) - Body ground Engine switch off 11 to 14 V
      X14-2 (B) - Body ground*1 Engine switch off 11 to 14 V
      W13-2 (B) - Body ground*1 Engine switch off 11 to 14 V

      • *1: w/ Rear Footwell Light


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H9 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H47-1 (E) - H9-20 (FSPT) Always Below 1 Ω
      H48-1 (E) - H9-20 (FSPT) Always Below 1 Ω
      X14-1 (GND) - H9-20 (FSPT) Always Below 1 Ω
      W13-1 (GND) - H9-20 (FSPT) Always Below 1 Ω
      H47-1 (E) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here