LIGHTING SYSTEM Hazard Warning Switch Circuit

DESCRIPTION

The combination meter assembly receives the radio receiver assembly (hazard warning signal switch) on signal and controls the operation of the hazard warning lights.

WIRING DIAGRAM


  1. w/o Navigation System

    B005O1WE03
    *a HZSW
    *b Radio Receiver Assembly (Hazard Warning Signal Switch)
    *c Combination Meter Assembly

  2. w/ Navigation System

    B005O1WE04
    *a HZSW
    *b Radio Receiver Assembly (Hazard Warning Signal Switch)
    *c Combination Meter Assembly

PROCEDURE


  1. READ VALUE 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 / Combination Meter / Data List.

    5. Read the Data List according to the display on the GTS.


      Body Electrical > Combination Meter > Data List
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Hazard Flasher Switch Radio receiver assembly (hazard warning signal switch) signal ON or OFF

      ON: Radio receiver assembly (hazard warning signal switch) on

      OFF: Radio receiver assembly (hazard warning signal switch) off

      		 -

      Body Electrical > Combination Meter > Data List
      Tester Display
      Hazard Flasher Switch
      OK
      Normal conditions listed above are displayed.
      Result
      Proceed to
      OK
      NG

    OK

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

    NG

  2. INSPECT RADIO RECEIVER ASSEMBLY (HAZARD WARNING SIGNAL SWITCH)


    1. Remove the radio receiver assembly (hazard warning signal switch).

      Click here

    2. Inspect the radio receiver assembly (hazard warning signal switch).

      Click here

      OK
      Radio receiver assembly (hazard warning signal switch) is normal.
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO RECEIVER ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) - COMBINATION METER ASSEMBLY OR BODY GROUND)


    1. Disconnect the J11 combination meter assembly connector.

    2. w/o Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J49-4 (HAZ) - J11-2 (HZSW) Always Below 1 Ω
        J49-4 (HAZ) or J11-2 (HZSW) - Body ground Always 10 kΩ or higher
        J52-7 (GND1) - Body ground Always Below 1 Ω

    3. w/ Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        J49-9 (HAZ) - J11-2 (HZSW) Always Below 1 Ω
        J49-9 (HAZ) or J11-2 (HZSW) - Body ground Always 10 kΩ or higher
        J52-12 (GND1) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR