LIGHTING SYSTEM Illumination Circuit

DESCRIPTION

The main body ECU receives information regarding all the door courtesy light switches and door lock position switches, and turns on the room light.

WIRING DIAGRAM

A00OLXNE01

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER


    1. Connect the intelligent tester to DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the intelligent tester on.

    4. Turn the map light switch to the DOOR position.

    5. Close all the doors (all door courtesy light switches turn off).

    6. Enter the following menus: Body / Main Body / Active Test / Illuminated Entry System.

    7. Use the Active Test to check the operation of the illuminated entry system.

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Illuminated Entry System All parts illuminated by illuminated entry system ON or OFF -
      OK
      The illuminated entry system operates normally when operating it using the Active Test.
      Result
      Result Proceed to
      OK A
      NG (All lights do not turn on) B
      NG (Room lights do not turn on) C
      NG (Only No. 1 interior illumination lights do not turn on) D

    B

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

    C

    INSPECT MAP LIGHT ASSEMBLY Click here

    D

    INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY Click here

    A

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

  2. INSPECT MAP LIGHT ASSEMBLY

    A00OHWBE03
    Text in Illustration
    *1

    Component without harness connected

    (Map Light Assembly)

    1. Remove the map light assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      6 (+B1) - 1 (CTY)

      Map light switch off

      Door switch off

      		 10 kΩ or higher
      6 (+B1) - 1 (CTY)

      Map light switch off

      Door switch on

      		 Below 1 Ω
      6 (+B1) - 7 (GND) Map light switch off 10 kΩ or higher
      6 (+B1) - 7 (GND) Map light switch on Below 1 Ω

    NG

    REPLACE MAP LIGHT ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (MAP LIGHT - BATTERY, MAIN BODY ECU AND BODY GROUND)

    A00OK21E03
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Map Light Assembly)
    *2

    Front view of wire harness connector

    (to Main Body ECU)

    1. Disconnect the DK main body ECU connector.

    2. Disconnect the K7 map light connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K7-6 (+B1) - Body ground Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      K7-1 (CTY) - DK-2 (ILE) Always Below 1 Ω
      K7-7 (GND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. INSPECT NO. 1 ROOM LIGHT ASSEMBLY

    A00ONR1E02
    Text in Illustration
    *1

    Component without harness connected

    (No. 1 Room Light Assembly)

    1. Remove the No. 1 room light assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      4 (B) - 3 (E) Off 10 kΩ or higher
      4 (B) - 2 (CTY) Off Below 1 Ω
      4 (B) - 3 (E) On Below 1 Ω
      4 (B) - 2 (CTY) On 10 kΩ or higher

    NG

    REPLACE NO. 1 ROOM LIGHT ASSEMBLY Click here

    OK

  5. CHECK HARNESS AND CONNECTOR (NO. 1 ROOM LIGHT - BATTERY, MAP LIGHT, MAIN BODY ECU AND BODY GROUND)

    A00OIFDE01
    Text in Illustration
    *1

    Front view of wire harness connector

    (to Map Light Assembly)
    *2

    Front view of wire harness connector

    (to No. 1 Room Light Assembly)

    1. Disconnect the K7 map light connector.

    2. Disconnect the K8 No. 1 room light connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      K8-4 (B) - Body ground Always 11 to 14 V
      Standard Resistance
      Tester Connection Condition Specified Condition
      K8-2 (CTY) - K7-5 (RRMP) Always Below 1 Ω
      K8-3 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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

  6. INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY

    A00OHWJE09
    Text in Illustration
    *1

    Front view of wire harness connector

    (to No. 1 Interior Illumination Light Assembly LH or RH)

    1. Remove the No. 1 interior illumination light LH Click here.

    2. Remove the No. 1 interior illumination light RH Click here.

    3. Connect the positive (+) lead from the battery to terminal 2 (B) and the negative (-) lead to terminal 1 (L), then check that the light comes on.

      OK
      Light comes on.
      Result
      Result Proceed to
      OK A
      NG (for LH) B
      NG (for RH) C

    B

    REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY Click here

    C

    REPLACE NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY Click here

    A

  7. CHECK HARNESS AND CONNECTOR (NO. 1 INTERIOR ILLUMINATION LIGHT - BATTERY AND MAIN BODY ECU)

    A00ONMDE03
    Text in Illustration
    *1

    Front view of wire harness connector

    (to No. 1 Interior Illumination Light Assembly LH or RH)
    *2 for LH
    *3 for RH
    *4

    Front view of wire harness connector

    (to Main Body ECU)

    1. Disconnect the D79 main body ECU connector.

    2. Disconnect the D42 or D41 No. 1 interior illumination light connector.

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

      Standard Voltage
      for LH
      Tester Connection Condition Specified Condition
      D42-2 (B) - Body ground Always 11 to 14 V
      for RH
      Tester Connection Condition Specified Condition
      D41-2 (B) - Body ground Always 11 to 14 V
      Standard Resistance
      for LH
      Tester Connection Condition Specified Condition
      D42-1 (L) - D79-2 (FSPT) Always Below 1 Ω
      for RH
      Tester Connection Condition Specified Condition
      D41-1 (L) - D79-2 (FSPT) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE MAIN BODY ECU