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 <Ref. to OPERATION , Clear Memory Mode.>, and Inspection Mode <Ref. to PROCEDURE , Inspection Mode.>.

WIRING DIAGRAM:

Engine Electrical System <Ref. to WIRING DIAGRAM , Engine Electrical System.>

Fig 1: TGV Control Circuit/Open Bank 1 Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ASSEMBLY LH CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from ECM. 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?	Repair the short circuit to power in harness between ECM connector and tumble generator valve assembly LH connector.	Replace the tumble generator valve assembly LH. <Ref. to Tumble Generator Valve Assembly .>