LIGHTING SYSTEM Interior Light Power Source Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the solid-state relay, that is built into the roof console box assembly, to supply power to the interior lights.

WIRING DIAGRAM

A01G57ZE01

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. INSPECT ROOF CONSOLE BOX ASSEMBLY


    1. Remove the roof console box assembly Click here.

    2. Inspect the roof console box assembly Click here.

      OK
      Roof console box assembly is normal.

    NG

    REPLACE ROOF CONSOLE BOX ASSEMBLY Click here

    OK

  2. CHECK HARNESS AND CONNECTOR (DOME FUSE - ROOF CONSOLE BOX ASSEMBLY)


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

      Standard Voltage
      Tester Connection Condition Specified Condition
      T10-4 (+B1) - Body ground Engine switch off 11 to 14 V
      T10-5 (+B5) - Body ground Engine switch off 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK HARNESS AND CONNECTOR (ROOF CONSOLE BOX ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the H11 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
      T10-7 (CILL) - H11-2 (DOMR) Always Below 1 Ω
      T10-7 (CILL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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