LIGHTING SYSTEM(for Halogen Headlight) Headlight (HI-BEAM) Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) receives headlight dimmer switch information signals and illuminates the high beam headlights.

WIRING DIAGRAM

B001GLZE01

CAUTION / NOTICE / HINT

Note


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

  • w/ Entry and Start System:

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

PROCEDURE


  1. PERFORM ACTIVE TEST USING GTS


    1. Using the GTS, perform the Active Test.

      Click here

      Main Body
      Tester Display Test Part Control Range Diagnostic Note
      Head Light Hi High beam headlights OFF or ON -
      OK
      High beam headlights turn on.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT HEADLIGHT RELAY (H-LP HI)


    1. Remove the headlight relay (H-LP HI) from the engine room relay block and junction block.

    2. Inspect the headlight relay (H-LP HI).

      Click here

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE HEADLIGHT RELAY (H-LP HI)

    OK

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT RELAY [H-LP HI] - BATTERY)


    1. Remove the headlight relay (H-LP HI) from the engine room relay block and junction block.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      Headlight relay (H-LP HI) terminal 1 - Body ground Always 11 to 14 V
      Headlight relay (H-LP HI) 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 (HEADLIGHT DIMMER RELAY [DIMMER] - MAIN BODY ECU [MULTIPLEX NETWORK BODY ECU] AND HEADLIGHT ASSEMBLY)


    1. Remove the headlight dimmer relay (DIMMER) from the engine room relay block and junction block.

    2. Disconnect the G218*1 or G64*2 main body ECU (multiplex network body ECU) connector.


      • *1: except 5L-E

      • *2: for 5L-E

    3. Disconnect the A111 headlight assembly LH connector.

    4. Disconnect the A113 headlight assembly RH connector.

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

      Standard Resistance
      except 5L-E
      Tester Connection Condition Specified Condition
      Headlight relay (H-LP HI) terminal 2 - G218-1 (DIM) Always Below 1 Ω
      Headlight relay (H-LP HI) terminal 3 - A111-3 (B) Always Below 1 Ω
      Headlight relay (H-LP HI) terminal 2 or G218-1 (DIM) - Body ground Always 10 kΩ or higher
      Headlight relay (H-LP HI) terminal 3 or A111-3 (B) - Body ground Always 10 kΩ or higher
      for 5L-E
      Tester Connection Condition Specified Condition
      Headlight relay (H-LP HI) terminal 2 - G64-15 (DIM) Always Below 1 Ω
      Headlight relay (H-LP HI) terminal 3 - A111-3 (B) Always Below 1 Ω
      Headlight relay (H-LP HI) terminal 2 or G64-15 (DIM) - Body ground Always 10 kΩ or higher
      Headlight relay (H-LP HI) terminal 3 or A111-3 (B) - 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