Inspection Procedure

1. Check the hazard warning switch continuity.

   Standard: 

   HAZARD WARNING SIGNAL SWITCH CHECK
   
   

   Terminal No.	Switch position	Specified condition
   .....	Switch OFF	Continuity
   2 <=> 3	Switch ON	Continuity
   4 <=> 5	Illumination circuit	Continuity

   Fig 1: Identifying Hazard Warning Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE HAZARD WARNING SIGNAL SWITCH ASSY 

OK: Go to next step 

NG: REPLACE TURN SIGNAL FLASHER ASSY 

OK: Go to next step 

1. Disconnect the TVIP ECU and turn signal flasher connectors.
2. Check the continuity between the terminals of the TVIP ECU and turn signal flasher connectors.

   Standard: 

   WIRE HARNESS (TVIP ECU <=> TURN SIGNAL FLASHER) CONTINUITY CHECK
   
   

   Symbols (Terminal No.) (TVIP ECU <=> Turn Signal Flasher)	Specified condition
   HAZD (T3-8) <=> HAZ (T2-8)	Continuity

   Fig 2: Identifying TVIP ECU Connector Terminal No. 8 & Turn Signal Flasher Relay Terminal No. 8

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the hazard warning switch connector.
2. Check the continuity between the terminal of the hazard warning switch connector and the body ground.

   Standard: 

   WIRE HARNESS (HAZARD WARNING SWITCH <=> BODY GROUND) CONTINUITY CHECK
   
   

   Symbols (Terminal No.) (Hazard warning SW <=> Body ground)	Specified condition
   H7-2 <=> Body ground	Continuity

   Fig 3: Identifying Hazard Warning Switch Connector Terminals (Wire Harness Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 

OK: CHECK AND REPLACE TVIP ECU  . See ELECTRONIC CIRCUIT INSPECTION PROCEDURE .