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Home › Toyota › 2004 › Prius › Repair and Diagnosis › Transmission › Automatic Trans › Automatic Transmission Shift Control System - Diagnosis › DTC C2307: Power Source Malfunction › Inspection Procedure

Inspection Procedure

  1. INSPECT TRANSMISSION CONTROL ECU ASSY (E1 TERMINAL) 
    Fig 1: Identifying Transmission Control ECU ASSY Connector E 1 Terminal
    G02918332Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T4 connector from the transmission control ECU assy.
    2. Measure the resistance according to the value(s) in the table below.

    Standard: 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection (Symbols) Condition Specified condition
    T4-15 (E1) - Body ground Always Below 1 Ω

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

  2. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU ASSY -SHIFT CONTROL ACTUATOR ASSY) 
    Fig 2: Identifying Transmission Control ECU ASSY, Connector Terminal
    G02918333Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage according to the value(s) in the table below.

    Standard: 

    TESTER CONNECTION SPECIFIED CONDITION

    Tester connection (Symbols) Condition Specified condition
    T4-10 (MWA) - Body ground Always Below 1 V
    T4-11 (MVA) - Body ground Always Below 1 V
    T4-12(MUA) - Body ground Always Below 1 V

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK 

    REPLACE TRANSMISSION CONTROL ECU ASSY 

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