Inspection Procedure

1. Remove the security indicator.
2. Check the indicator light. See Fig 1.

   Standard: 

   INTEGRATION RELAY CHECK
   
   

   Measuring condition	Operation
   Battery positive (+) <=> Terminal 2 Battery negative (-) <=> Terminal 1	Indicator light comes on

   Fig 1: Checking Security Indicator Light Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE SECURITY INDICATOR LIGHT 

OK: Go to next step 

1. Disconnect the TVIP ECU and security indicator connectors.
2. Check the continuity between the terminals of the TVIP ECU connector and security indicator connector.

   Standard: 

   WIRE HARNESS CONTINUITY CHECK
   
   

   Symbols (Terminal No.) (TVIP ECU <=> Security indicator)	Specified condition
   IND (T3-25) <=> IND (S4-2)	Continuity

   Fig 2: Identifying TVIP ECU & Security Indicator Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 

OK: Go to next step 

1. Disconnect the security indicator connector.
2. Check the continuity between the terminal of the security indicator connector and body ground.

   Standard: 

   WIRE HARNESS CONTINUITY CHECK
   
   

   Symbol (Terminal No. (Security indicator <=> Body ground)	Specified condition
   GND (S4-1) <=> Body ground	Continuity

NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 

Fig 3: Checking Security Indicator Wire Harness Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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