LIGHTING SYSTEM Hazard Warning Switch Circuit

DESCRIPTION

The combination meter assembly receives the hazard switch ON signal and controls the operation of the hazard warning lights.

WIRING DIAGRAM


  1. w/ Navigation System:

    A01W5FFE17
    *a HZSW
    *b Radio Receiver Assembly (Hazard Switch)
    *c Combination Meter Assembly

  2. w/ Audio and Visual System:

    A01W5FFE18
    *a HZSW
    *b Radio Receiver Assembly (Hazard 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.

      Combination Meter
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Hazard Flasher Switch Hazard switch signal/ON or OFF

      ON: Hazard switch on

      OFF: Hazard switch off

      		 -
      OK
      Normal conditions listed above are displayed.

    OK

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

    NG

  2. INSPECT RADIO RECEIVER ASSEMBLY (HAZARD SWITCH)


    1. Remove the radio receiver assembly (hazard switch) Click here.

    2. Inspect the radio receiver assembly (hazard switch) Click here.


    NG

    REPLACE RADIO RECEIVER ASSEMBLY (HAZARD SWITCH) Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - COMBINATION METER ASSEMBLY)


    1. Disconnect the H13 combination meter assembly connector.

    2. w/ Navigation System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        H98-9 (HAZ) - H13-2 (HZSW) Always Below 1 Ω
        H98-9 (HAZ) - Body ground Always 10 kΩ or higher
        H97-12 (GND1) - Body ground Always Below 1 Ω

    3. w/ Audio and Visual System:


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

        Standard Resistance
        Tester Connection Condition Specified Condition
        H181-4 (HAZ) - H13-2 (HZSW) Always Below 1 Ω
        H181-4 (HAZ) - Body ground Always 10 kΩ or higher
        H182-7 (GND1) - Body ground Always Below 1 Ω

    OK

    REPLACE COMBINATION METER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR