Inspection Procedure

1. Measure the resistance according to the value(s) in HAZARD WARNING SIGNAL SWITCH ASSEMBLY  .

   Standard resistance 

   HAZARD WARNING SIGNAL SWITCH ASSEMBLY
   
   

   Tester Connection	Switch Condition	Specified Condition
   -	OFF	Below 1 Ω
   1 - 4	ON	Below 1 Ω
   8 - 9	Illumination circuit	Below 1 Ω

   Fig 1: Checking Hazard Warning Signal Switch Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE HAZARD WARNING SIGNAL SWITCH ASSEMBLY 

OK: GO TO NEXT STEP 

1. Check TURN SIGNAL FLASHER ASSEMBLY .

NG: REPLACE TURN SIGNAL FLASHER ASSEMBLY 

OK: GO TO NEXT STEP 

1. Disconnect the TVIP ECU and turn signal flasher connectors.
2. Measure the resistance according to the value(s) in TVIP ECU - TURN SIGNAL FLASHER  .

   Standard resistance 

   TVIP ECU - TURN SIGNAL FLASHER
   
   

   Tester Connection	Specified Condition
   HAZD (T3-8) - EHW (T2-8)	Below 1 Ω

   Fig 2: Checking Harness And Connector (TVIP ECU - Turn Signal Flasher)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: GO TO NEXT STEP 

1. Disconnect the H7 hazard warning switch connector.
2. Measure the resistance according to the value(s) in HAZARD WARNING SWITCH - BODY GROUND  .

   Standard resistance 

   HAZARD WARNING SWITCH - BODY GROUND
   
   

   Tester Connection	Specified Condition
   H7-1 - Body ground	Below 1 Ω

   Fig 3: Checking Harness And Connector (Hazard Warning Switch - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE TVIP ECU