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DTC P2012: TGV Control Circuit Low Bank 2: Notes

DTC detecting condition: 

Immediately at fault recognition

CAUTION: After servicing or replacing faulty parts, perform Clear Memory Mode Refer to ENGINE (DIAGNOSTICS) (STI)>CLEAR MEMORY MODE>OPERATION ., and inspection mode Refer to ENGINE (DIAGNOSTICS) (STI)>INSPECTION MODE>PROCEDURE .

Wiring diagram: 

Engine Electrical System Refer to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM>WIRING DIAGRAM .

G12456863Courtesy of SUBARU OF AMERICA, INC.
  1. CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ASSEMBLY LH CONNECTOR. 
    1. Turn the ignition switch to OFF.
    2. Disconnect the connector from ECM.
    3. Measure the voltage between ECM connector and chassis ground.

    Connector & terminal 

    (B134) No. 23 (+) - Chassis ground (-):

    (B134) No. 24 (+) - Chassis ground (-):

    Is the voltage 5 V or more?

    Yes:  Repair the short circuit to power in harness between ECM connector and tumble generator valve assembly LH connector.

    No:  Replace the tumble generator valve assembly LH. Refer to FUEL INJECTION (FUEL SYSTEMS) (STI)>TUMBLE GENERATOR VALVE ASSEMBLY .