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. 

   Table 1.

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

   w/ Navigation System:

2. 

   Table 2.

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

   w/ Audio and Visual System:

PROCEDURE

1. Click here

   READ VALUE USING GTS

   
   

   1. Connect the GTS to the DLC3.

   2. Turn the power 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.

      Table 3. 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)

   • NGClick here
2. Click here

   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).

   
   
   • OKClick here
   • NG

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

3. Click here

   CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY (HAZARD SWITCH) - COMBINATION METER ASSEMBLY)

   
   

   1. w/ Navigation System:

      
      

      1. Disconnect the H13 combination meter assembly connector.

      2. 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

   2. w/ Audio and Visual System:

      
      

      1. Disconnect the H13 combination meter assembly connector.

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

         Standard Resistance
         Tester Connection Condition Specified Condition H178-4 (HAZ) - H13-2 (HZSW) Always Below 1 Ω H178-4 (HAZ) - Body ground Always 10 kΩ or higher H179-7 (GND1) - Body ground Always Below 1 Ω

   
   
   • OK

     REPLACE COMBINATION METER ASSEMBLY (Click here)

   • NG

     REPAIR OR REPLACE HARNESS OR CONNECTOR