LIGHTING SYSTEM Ambient Illumination Light Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) controls the ambient illumination lights.

WIRING DIAGRAM

A01VY2ME03
A01VUGAE02

CAUTION / NOTICE / HINT

Note


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

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

  • The vehicle battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before proceeding with troubleshooting, perform an on-vehicle inspection and confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.*

    Click here


    • *: w/o Canister Pump Module with Door Ajar Warning Buzzer Function

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the engine 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
      Interior Illumination Light1 Instrument panel ambient illumination light ON or OFF

      Preconditions for using the Active Test to check dimmer controlled illumination:


      • Engine switch on.

      • Shift lever is in any position other than P.
      Interior Illumination Light2 Door ambient illumination light ON or OFF

      Preconditions for using the Active Test to check dimmer controlled illumination:


      • Engine switch on.

      • Shift lever is in any position other than P.

      Body Electrical > Main Body > Active Test
      Tester Display
      Interior Illumination Light1

      Body Electrical > Main Body > Active Test
      Tester Display
      Interior Illumination Light2
      OK
      Ambient illumination lights comes on.
      Result
      Result Proceed to
      OK A
      NG (All ambient lights do not illuminate) (w/o Stop and start system) B
      NG (Instrument panel ambient illumination light does not illuminate) (w/o Stop and start system) C
      NG (Door ambient illumination light does not illuminate) (w/o Stop and start system) D
      NG (Instrument panel ambient illumination light does not illuminate) (w/ Stop and start system) E
      NG (Door ambient illumination light does not illuminate) (w/ Stop and start system) F

    A

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

    C

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    D

    INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    E

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - INTERIOR ILLUMINATION LIGHT SUB-ASSEMBLY) Click here

    F

    CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - DOOR TRIM BOARD SUB-ASSEMBLY) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the 2E*1 or 2G*2 instrument panel junction block assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      2E-1 - Body ground*1 Always 11 to 14 V
      2G-1 - Body ground*2 Always 11 to 14 V

      • *1: for LHD

      • *2: for RHD

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Disconnect the 2B instrument panel junction block assembly connector.

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

      A01VXMMC03
      *A for LHD *B for RHD
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2E-1 - 2B-24 Always Below 1 Ω
      2E-1 - 2B-25 Always Below 1 Ω
      2E-1 - 2B-27 Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      2G-1 - 2B-24 Always Below 1 Ω
      2G-1 - 2B-25 Always Below 1 Ω
      2G-1 - 2B-27 Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

  4. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Disconnect the 2B instrument panel junction block assembly connector.

    2. Disconnect the 2E*1 or 2G*2 instrument panel junction block assembly connector.

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

      A01VXMMC03
      *A for LHD *B for RHD
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2E-1 - 2B-27 Always Below 1 Ω
      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      2G-1 - 2B-27 Always Below 1 Ω

      • *1: for LHD

      • *2: for RHD

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (INTERIOR ILLUMINATION LIGHT SUB-ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the K10 interior illumination light sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K10-2 - 2B-27 Always Below 1 Ω
      K10-2 or 2B-27 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK HARNESS AND CONNECTOR (INTERIOR ILLUMINATION LIGHT SUB-ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the J9 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
      K10-1 - J9-21 (LED1) Always Below 1 Ω
      K10-1 or J9-21 (LED1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


    1. Disconnect the 2B instrument panel junction block assembly connector.

    2. Disconnect the 2E*1 or 2G*2 instrument panel junction block assembly connector.

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

      A01VXMMC03
      *A for LHD *B for RHD
      *a

      Component without harness connected

      (Instrument Panel Junction Block Assembly)

      		 - -
      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      2E-1 - 2B-24 Always Below 1 Ω
      2E-1 - 2B-25 Always Below 1 Ω
      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      2G-1 - 2B-24 Always Below 1 Ω
      2G-1 - 2B-25 Always Below 1 Ω

      • *1: for LHD

      • *2: for RHD

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here

    OK

  8. CHECK HARNESS AND CONNECTOR (DOOR TRIM BOARD SUB-ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)


    1. Disconnect the M12 front door trim board sub-assembly RH connector.

    2. Disconnect the N12 front door trim board sub-assembly LH connector.

    3. Disconnect the Q5 rear door trim board sub-assembly RH connector.

    4. Disconnect the Q6 rear door trim board sub-assembly LH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M12-1 - 2B-24 Always Below 1 Ω
      M12-1 or 2B-24 - Body ground Always 10 kΩ or higher
      Q5-1 - 2B-24 Always Below 1 Ω
      Q5-1 or 2B-24 - Body ground Always 10 kΩ or higher
      N12-1 - 2B-25 Always Below 1 Ω
      N12-1 or 2B-25 - Body ground Always 10 kΩ or higher
      Q6-1 - 2B-25 Always Below 1 Ω
      Q6-1 or 2B-25 - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  9. CHECK HARNESS AND CONNECTOR (DOOR TRIM BOARD SUB-ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the J9 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
      M12-2 - J9-22 (LED2) Always Below 1 Ω
      M12-2 or J9-22 (LED2) - Body ground Always 10 kΩ or higher
      Q5-2 - J9-22 (LED2) Always Below 1 Ω
      Q5-2 or J9-22 (LED2) - Body ground Always 10 kΩ or higher
      N12-2 - J9-22 (LED2) Always Below 1 Ω
      N12-2 or J9-22 (LED2) - Body ground Always 10 kΩ or higher
      Q6-2 - J9-22 (LED2) Always Below 1 Ω
      Q6-2 or J9-22 (LED2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  10. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - INTERIOR ILLUMINATION LIGHT SUB-ASSEMBLY)


    1. Disconnect the K10 interior illumination light sub-assembly connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K10-2 - Body ground Always 10.5 to 16 V
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STOP AND START SYSTEM Click here

    OK

  11. CHECK HARNESS AND CONNECTOR (INTERIOR ILLUMINATION LIGHT SUB-ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU))


    1. Disconnect the J9 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
      K10-1 - J9-21 (LED1) Always Below 1 Ω
      K10-1 or J9-21 (LED1) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - DOOR TRIM BOARD SUB-ASSEMBLY)


    1. Disconnect the M12 front door trim board sub-assembly RH connector.

    2. Disconnect the N12 front door trim board sub-assembly LH connector.

    3. Disconnect the Q5 rear door trim board sub-assembly RH connector.

    4. Disconnect the Q6 rear door trim board sub-assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      M12-1 - Body ground Always 10.5 to 16 V
      N12-1 - Body ground Always 10.5 to 16 V
      Q5-1 - Body ground Always 10.5 to 16 V
      Q6-1 - Body ground Always 10.5 to 16 V
      Result
      Proceed to
      OK
      NG

    OK

    GO TO STEP 9 Click here

    NG

    GO TO STOP AND START SYSTEM Click here