DTC P2012: TGV Control Circuit Low Bank 2: Notes

1. - DTC detecting condition:

Immediately at fault recognition

Wiring diagram:

Engine Electrical System Ref. to WIRING SYSTEM>ENGINE ELECTRICAL SYSTEM .

Courtesy of SUBARU OF AMERICA, INC.

CAUTION:

Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>General Description>PREPARATION TOOL> HOW TO USE CHECK BOARD .

NOTE:

After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Basic Diagnostic Procedure> PROCEDURE .

CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ACTUATOR LH CONNECTOR (SHORT TO POWER SUPPLY) .
1. Turn the ignition switch to OFF.
2. Disconnect the connector from ECM.
3. Turn the ignition switch to ON.
4. Measure the voltage between ECM connector and engine ground.
  Connector & terminal
  
  (E158) No. 10 (+) - Engine ground (-):
  
  (E158) No. 11 (+) - Engine ground (-):
  
  Is the voltage 5 V or more?
  
  Yes : Repair the short circuit to power in harness between ECM connector and tumble generator valve actuator LH connector.
  
  No : Replace the tumble generator valve actuator LH. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>TUMBLE GENERATOR VALVE ACTUATOR .
  
  NOTE:
  The tumble generator valve actuator cannot be disassembled.