LIGHTING SYSTEM Interior Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the operation of the following lights:


WIRING DIAGRAM


  1. B002EOTE01

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses and lights for circuits related to this system before performing the following procedure.

  • Recognition code registration is necessary when replacing the main body ECU (multiplex network body ECU).

  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

Tech Tips

The DOME CUT relay supplies power to the interior lights. If all the lights that use power from the DOME CUT relay do not turn on, check the interior light auto cut circuit first.

Click here

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS (ILLUMINATED ENTRY SYSTEM)


    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. Perform the Active Test according to the display on the GTS.


      Body Electrical > Main Body > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Illuminated Entry System Map light and spot light ON or OFF -

      Body Electrical > Main Body > Active Test
      Tester Display
      Illuminated Entry System
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT COWL SIDE JUNCTION BLOCK LH


    1. Remove the cowl side junction block LH.

      Click here

    2. Remove the main body ECU (multiplex network body ECU) from the cowl side junction block LH.

      Click here

    3. B002ETKC02
      *a

      Component without harness connected

      (Cowl Side Junction Block LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      5A-27 - MB-1 (ILE) Always Below 1 Ω
      5A-27 - MB-1 (ILE) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE COWL SIDE JUNCTION BLOCK LH Click here