Inspection Procedure

1. Remove the fuse from the instrument panel J/B.
2. Check the continuity of the fuse.

   Standard: Continuity 

   Fig 1: Checking ECU-B Fuse

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FUSE 

OK: Go to next step 

1. Disconnect the TVIP ECU connector.
2. Measure the voltage between the terminals of the ECU connector.

   Standard: 

   TVIP ECU VOLTAGE CHECK
   
   

   Symbols (Terminal No.)	Specified condition
   +B1 (T3-2) <=> E (T3-29)	10-14 V
   E (T3-29) <=> Body ground	0 V

   Fig 2: Identifying TVIP ECU Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS (See  PROBLEM SYMPTOMS   ) 

OK: Go to next step 

1. Disconnect the TVIP ECU connector.
2. Check the connector on the harness side.

   Standard: 

   WIRE HARNESS CHECK
   
   

   Symbols (Terminal No.)	Specified condition
   E (T3-29) <=> Body ground	Continuity

   Fig 3: Checking TVIP ECU Harness Connector Terminal E (29)

   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  .