LIGHTING SYSTEM(except 5L-E) Interior Light Circuit

DESCRIPTION

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


WIRING DIAGRAM

B001EC3E02
B001GR0E01

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


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

      Click here

      Main Body
      Tester Display Measurement Item Control Range Diagnostic Note
      Illuminated Entry System Map light assembly, transponder key coil*, No. 1 room light assembly and No. 2 room light assembly OFF or ON Turn the map light assembly, No. 1 room light assembly and No. 2 room light assembly to the DOOR position.

      *: w/o Entry and Start System

      OK
      All lights illuminates.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY


    1. B001ECSC01
      *a

      Component without harness connected

      (Driver Side Junction Block Assembly)

      Remove the driver side junction block assembly.

      Click here

    2. Remove the main body ECU (multiplex network body ECU) from the driver side junction block assembly.

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      2N-19 - A-1 (ILE) Always Below 1 Ω
      2N-31 - A-1 (ILE) Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE DRIVER SIDE JUNCTION BLOCK ASSEMBLY Click here