Inspection Procedure

CHECK TVIP ECU
1. Check that the operation of the TVIP function is normal.
NOTE: With this inspection, the TVIP ECU CPU can be diagnosed if it works normally or not.
1. NG: CHECK AND REPLACE TVIP ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
2. OK: Go To Next Step
CHECK WIRE HARNESS (TVIP ECU <--> INTEGRATION RELAY)

Fig 1: Identifying TVIP ECU & Integration Relay Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 the illustration and table.
  Standard:
Fig 2: TVIP ECU & Integration Relay Terminals Continuity Chart
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR
2. OK: CHECK AND REPLACE TVIP ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )