Hazard Warning Switch Circuit [07/2014 - ]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. According to the display on the Techstream, read the Data List.
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Hazard Flasher Switch	Hazard warning signal switch / OFF or ON	OFF: Hazard warning signal switch off ON: Hazard warning signal switch on	-

   OK

   Normal conditions listed above are displayed.

NG → See step   2 

OK → See step   7 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the D101 combination meter assembly connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   D101-1 (B) - Body Ground	Always	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Combination Meter Assembly)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Disconnect the D115 telltale light assembly (hazard warning signal switch) connector.
2. Disconnect the D101 combination meter assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D115-4 (TB) - D101-3 (HAZ)	Always	Below 1 Ω
   D115-5 (E) - Body Ground	Always	Below 1 Ω
   D115-4 (TB) - Body ground	Always	10 kΩ or higher

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the telltale light assembly (hazard warning signal switch). Refer to REMOVAL [07/2014 - ] .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Combination Meter / Data List.
5. According to the display on the Techstream, read the Data List.
   COMBINATION METER
   
   

   Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
   Hazard Flasher Switch	Hazard warning signal switch / OFF or ON	OFF: Hazard warning signal switch off ON: Hazard warning signal switch on	-

   OK

   Normal conditions listed above are displayed.

NG → See step   6 

OK → END (TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) WAS DEFECTIVE)