LIGHTING SYSTEM Door Courtesy Light Circuit

DESCRIPTION

The main body ECU (network gateway ECU) controls the operation of the courtesy light assembly.

WIRING DIAGRAM

A004KRUE02

CAUTION / NOTICE / HINT

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 GTS


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Main Body / Active Test.

    5. Check that the lights operate.

      OK
      Each light comes on.
      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Driver Courtesy Lamp Driver courtesy light ON/OFF -
      Passenger Courtesy Lamp Passenger courtesy light ON/OFF -
      Result
      Result Proceed to
      All lights do not come on A
      Courtesy light assembly RH does not come on B
      Courtesy light assembly LH does not come on C

    A

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

    C

    CHECK HARNESS AND CONNECTOR (BATTERY - COURTESY LIGHT) Click here

    B

  2. CHECK HARNESS AND CONNECTOR (BATTERY - COURTESY LIGHT)


    1. Disconnect the F4 courtesy light assembly RH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F4-2 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. INSPECT COURTESY LIGHT ASSEMBLY


    1. Remove the courtesy light assembly RH Click here.

    2. Inspect the courtesy light assembly RH Click here.

      OK
      Courtesy light assembly RH is normal.

    NG

    REPLACE COURTESY LIGHT ASSEMBLY Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (NETWORK GATEWAY ECU) - COURTESY LIGHT AND BODY GROUND)


    1. Disconnect the D5 main body ECU (network gateway ECU) connector.

    2. Disconnect the F4 courtesy light assembly RH connector.

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      D5-5 (FRCL) - F4-1 Always Below 1 Ω
      F4-1 - Body ground Always 10 kΩ or higher
      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      D5-6 (FRCL) - F4-1 Always Below 1 Ω
      F4-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. CHECK HARNESS AND CONNECTOR (BATTERY - COURTESY LIGHT)


    1. Disconnect the E2 courtesy light assembly LH connector.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      E2-2 - Body ground Always 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. INSPECT COURTESY LIGHT ASSEMBLY


    1. Remove the courtesy light assembly LH Click here.

    2. Inspect the courtesy light assembly LH Click here.

      OK
      Courtesy light assembly LH is normal.

    NG

    REPLACE COURTESY LIGHT ASSEMBLY Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (MAIN BODY ECU (NETWORK GATEWAY ECU) - COURTESY LIGHT AND BODY GROUND)


    1. Disconnect the D5 main body ECU (network gateway ECU) connector.

    2. Disconnect the E2 courtesy light assembly LH connector.

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

      Standard Resistance
      for RHD
      Tester Connection Condition Specified Condition
      D5-6 (FLCL) - E2-1 Always Below 1 Ω
      E2-1 - Body ground Always 10 kΩ or higher
      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      D5-5 (FLCL) - E2-1 Always Below 1 Ω
      E2-1 - Body ground Always 10 kΩ or higher

    OK

    REPLACE MAIN BODY ECU (NETWORK GATEWAY ECU) Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR