Inspection Procedure

1. Disconnect the key unlock warning switch connector.
2. Check the continuity between the terminals of the key unlock warning switch connector.

   Standard: 

   Fig 1: Un-Lock Warning Switch Continuity Check

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 2: Checking Un-lock Warning Switch & Connector Identification

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE UN-LOCK WARNING SWITCH ASSY 

OK: Go to next step 

1. Disconnect the TVIP ECU and key unlock warning switch connectors.
2. Check the continuity between the terminals of the TVIP ECU connectors and unlock warning switch connector.

   Standard: 

   WIRE HARNESS (TVIP ECU <=> UNLOCK WARNING SWITCH) CONTINUITY CHECK
   
   

   Symbols (Terminal No.) (TVIP ECU <=> Unlock warning switch)	Specified condition
   KSW (T3-12) <=> U1-2	Continuity

   Fig 3: Identifying TVIP ECU & Unlock Warning Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 

OK: Go to next step 

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

   Standard: 

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

   Terminal No. (Key unlock warning SW <=> Body ground)	Specified condition
   U1-1 <=> Body ground	Continuity

   Fig 4: Identifying Unlock Warning Switch Connector Terminals

   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 .