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Inspection Procedure

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  1. CHECK TVIP ECU 
    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 (See  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
    2. OK: GO TO NEXT STEP. 
  2. CHECK WIRE HARNESS (TVIP ECU <=> INTEGRATION RELAY) 
    1. Disconnect the TVIP ECU and integration relay connectors.
    2. Check the continuity between the terminal of the TVIP ECU connector and integration relay connectors, as shown in the illustration and table.

      Standard: 

      TERMINAL SPECIFIED CONDITION

      Symbols (Terminal No.) (TVIP ECU <=> Integration relay) Specified condition
      IRSG (T3-28) <=> TVSS (I11-26) Continuity
      Fig 1: Disconnecting TVIP ECU And Integration Relay Connectors
      G02861175Courtesy 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  ) 
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