LIGHTING SYSTEM Interior Light Circuit

DESCRIPTION

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


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 power source circuit first.

Click here


WIRING DIAGRAM

A00YPPIE01

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power 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 Lights up the lights that are controlled by the illuminated entry system.*1 ON or OFF -

      • *1: Refer to System Description for the lights that are controlled by the illuminated entry system.

        Click here


      Body Electrical > Main Body > Active Test
      Tester Display
      Illuminated Entry System
      Result
      Result Proceed to
      All lights that are controlled by the illuminated entry system come on. A

      • All lights that are controlled by the illuminated entry system do not come on (w/ Room Light (for Slide Switch Type))

      • All lights that are controlled by the illuminated entry system do not come on (w/o Room Light)

      		 B
      All lights that are controlled by the illuminated entry system do not come on (w/ Room Light (for Push Switch Type)) C

    A

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

    B

    GO TO STEP 3 Click here

    C

  2. INSPECT MAP LIGHT ASSEMBLY


    1. Remove the map light assembly.

      Click here

    2. Inspect the map light assembly.

      Click here

      OK
      Map light assembly is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

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


    1. Disconnect the 3C instrument panel junction block assembly connector.

    2. Disconnect the O6 No. 1 room light assembly connector.*1


      • *1: w/ Room Light (for Slide Switch Type)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3C-54 - O8-3 (CTY) Always Below 1 Ω
      3C-54 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Remove the instrument panel junction block assembly.

      for RHD: Click here

      for LHD: Click here

    2. Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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

      A00YNKWC04
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      Tester Connection Condition Specified Condition
      3C-54 - MB-1 (ILE) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for RHD: Click here
    REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) for LHD: Click here

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for RHD: Click here
    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY for LHD: Click here