LIGHTING SYSTEM Interior Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the ignition key cylinder light (w/o Entry and Start System), map light and No. 1 room light.

WIRING DIAGRAM

A01GD5BE01

CAUTION / NOTICE / HINT

Note


  • Inspect the fuses and bulbs 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. PERFORM ACTIVE TEST USING GTS (MAP LIGHT, NO. 1 ROOM LIGHT AND IGNITION KEY CYLINDER LIGHT)


    1. Using the GTS, perform the Active Test.

      Click here


      Body Electrical > Main Body > Active Test
      Tester Display Measurement Item Control Range Diagnostic Note
      Illuminated Entry System Map light, ignition key cylinder light (w/o Entry and Start System) and No. 1 room light ON or OFF Turn the map light switch and No. 1 room light switch to the DOOR position.

      Body Electrical > Main Body > Active Test
      Tester Display
      Illuminated Entry System
      Result
      Result Proceed to
      Map light assembly, No. 1 room light assembly and ignition key cylinder light comes on A
      Map light assembly and No. 1 room light assembly does not comes on B
      Map light assembly or No. 1 room light assembly does not comes on C
      Ignition key cylinder light does not comes on (w/o Entry and Start System) D

    A

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

    C

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

    D

    INSPECT TRANSPONDER KEY COIL (IGNITION KEY CYLINDER LIGHT) Click here

    B

  2. INSPECT MAP LIGHT ASSEMBLY


    1. Remove the map light assembly.

      Click here

    2. Inspect the map light assembly.

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - BATTERY AND BODY GROUND)


    1. A01GCQBC01
      *A w/ Sliding Roof System
      *B w/o Sliding Roof System

      Disconnect the map light assembly connector.

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

      Standard Voltage
      w/ Sliding Roof System
      Tester Connection Condition Specified Condition
      Q12-3 (+B1) - Body ground Battery saving control (interior light auto cut function) not operating 11 to 14 V
      w/o Sliding Roof System
      Tester Connection Condition Specified Condition
      Q11-3 (+B1) - Body ground Battery saving control (interior light auto cut function) not operating 11 to 14 V

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

      Standard Resistance
      w/ Sliding Roof System
      Tester Connection Condition Specified Condition
      Q12-1 (GND) - Body ground Always Below 1 Ω
      w/o Sliding Roof System
      Tester Connection Condition Specified Condition
      Q11-1 (GND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the Q12*1 or Q11*2 map light assembly connector.

      *1: w/ Sliding Roof System

      *2: w/o Sliding Roof System

    2. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Resistance
      w/ Sliding Roof System
      Tester Connection Condition Specified Condition
      Q12-2 (CTY) - 3D-35 Always Below 1 Ω
      Q12-2 (CTY) - Body ground Always 10 kΩ or higher
      w/o Sliding Roof System
      Tester Connection Condition Specified Condition
      Q11-2 (CTY) - 3D-35 Always Below 1 Ω
      Q11-2 (CTY) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

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

    OK

  5. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A01GA1WN02

      Remove the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

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

      for LHD:

      Click here

      for RHD:

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-1 (ILE) - 3D-35 Always Below 1 Ω
      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

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

  6. INSPECT TRANSPONDER KEY COIL (IGNITION KEY CYLINDER LIGHT)


    1. Remove the transponder key coil (ignition key cylinder light).

      Click here

    2. Inspect the transponder key coil (ignition key cylinder light).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE TRANSPONDER KEY COIL (IGNITION KEY CYLINDER LIGHT) Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY COIL [IGNITION KEY CYLINDER LIGHT] - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BATTERY)


    1. Disconnect the G6 transponder key coil (ignition key cylinder light) connector.

    2. Disconnect the 3D instrument panel junction block assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      G6-2 (ILL+) - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G6-4 (ILL-) - 3D-44 Always Below 1 Ω
      G6-4 (ILL-) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. A01GA1WN01

      Remove the instrument panel junction block assembly.

      for LHD:

      Click here

      for RHD:

      Click here

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

      for LHD:

      Click here

      for RHD:

      Click here

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A-26 (KILE) - 3D-44 Always Below 1 Ω
      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

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