Inspection Procedure

1. Remove the fuse from the instrument panel J/B.
2. Measure the resistance of the fuse.

   Standard resistance: 

   Below 1 Ω 

Fig 1: Checking Fuse (ECU-B)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE FUSE 

OK: GO TO NEXT STEP 

1. Disconnect the TVIP ECU connector.
2. Measure the voltage according to the value(s) in TVIP ECU  .

   Standard voltage 

   TVIP ECU
   
   

   Tester Connection	Specified Condition
   +B1 (T3-2) - Body ground	10 to 14 V

   Fig 2: Checking TVIP ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN  PROBLEM SYMPTOMS TABLE  

OK: GO TO NEXT STEP 

1. Disconnect the TVIP ECU connector.
2. Measure the resistance according to the value(s) in TVIP ECU - BODY GROUND  .

   Standard resistance 

   TVIP ECU - BODY GROUND
   
   

   Tester Connection	Specified Condition
   E (T3-29) - Body ground	Below 1 Ω

   Fig 3: Checking Harness And Connector (TVIP ECU - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE TVIP ECU