LIGHTING SYSTEM Interior Light Auto Cut Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the DOME CUT relay.

WIRING DIAGRAM

A01V7R7E01

CAUTION / NOTICE / HINT

Note


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

  • When replacing the main body ECU (multiplex network body ECU), make sure to replace it with a new one.

PROCEDURE


  1. READ VALUE USING GTS (DOME CUT RELAY)


    1. Using the GTS, read the Data List.

      Click here


      Body Electrical > Main Body > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Relay for Interior Light Auto Cut Function DOME CUT relay ON or OFF -

      Body Electrical > Main Body > Active Test
      Tester Display
      Relay for Interior Light Auto Cut Function
      OK
      Battery saving control (interior light auto cut function) operates.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT DOME CUT RELAY


    1. A01VA8KN01

      Remove the DOME CUT relay from the No. 5 relay block*1 or No. 4 relay block*2.

      *1: for LHD

      *2: for RHD

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 - 5 Battery voltage not applied between terminals 1 and 2 10 kΩ or higher
      3 - 5 Battery voltage applied between terminals 1 and 2 Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE DOME CUT RELAY

    OK

  3. CHECK HARNESS AND CONNECTOR (BATTERY - DOME CUT RELAY)


    1. A01V83BC01
      *A for LHD
      *B for RHD
      *a

      Front view of wire harness connector

      (to DOME CUT Relay)

      Remove the DOME CUT relay from the No. 5 relay block*1 or No. 4 relay block*2.

      *1: for LHD

      *2: for RHD

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      DOME CUT relay terminal 2 - Body ground Always 11 to 14 V
      DOME CUT relay terminal 5 - Body ground Always 11 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (DOME CUT RELAY - MAIN BODY ECU)


    1. Remove the DOME CUT relay from the No. 5 relay block*1 or No. 4 relay block*2.

      *1: for LHD

      *2: for RHD

    2. Disconnect the G78 main body ECU (multiplex network body ECU) connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      DOME CUT relay terminal 1 - G78-15 (DOMR) Always Below 1 Ω
      G78-15 (DOMR) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR