Inspection Procedure

CHECK HAZARD WARNING SIGNAL SWITCH ASSY

Fig 1: Identifying Hazard Warning Switch Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Check the hazard warning switch continuity, as shown in the illustration and table.
  Standard:
Fig 2: Hazard Warning Switch Terminals Continuity Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE HAZARD WARNING SIGNAL SWITCH ASSY
2. OK: Go To Next Step
CHECK TURN SIGNAL FLASHER ASSY (See ON-VEHICLE INSPECTION )
1. NG: REPLACE TURN SIGNAL FLASHER ASSY
2. OK: Go To Next Step
CHECK WIRE HARNESS (TVIP ECU <--> TURN SIGNAL FLASHER)

Fig 3: Identifying TVIP ECU & Turn Signal Flasher Relay Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the TVIP ECU and turn signal flasher connectors.
2. Check the continuity between the terminals of the TVIP ECU connector and turn signal flasher connector, as shown in the illustration and table.
  Standard:
Fig 4: TVIP ECU Connector & Turn Signal Flasher Continuity Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
2. OK: Go To Next Step.
CHECK WIRE HARNESS (HAZARD WARNING SWITCH <--> BODY GROUND)

Fig 5: Identifying Hazard Warning Switch Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the hazard warning switch connector.
2. Check the continuity between the terminal of the hazard warning switch connector and body ground, as shown in the illustration and table.
  Standard:
Fig 6: Hazard Warning Switch & Body Ground Continuity Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
2. OK: CHECK AND REPLACE TVIP ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )