Inspection Procedure

1. Check that the operation of the TVIP function is normal.

   HINT:  With this inspection, the TVIP ECU CPU can be diagnosed if it works normally or not.

1. NG: CHECK AND REPLACE TVIP ECU (Refer to  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ). 
2. OK: Go to next step. 

1. Disconnect the TVIP ECU and integration relay connectors.
2. Check the continuity between the terminals of the TVIP ECU connector and integration relay connector, as shown in Fig 1 and TESTING TVIP ECU & INTEGRATION RELAY CONNECTOR TERMINALS CONTINUITY .

Standard: 

Fig 1: Identifying TVIP ECU & Integration Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR 
2. OK: CHECK AND REPLACE TVIP ECU (Refer to  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ).