DTC P2012: TGV Control Circuit Low Bank 2: Notes

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DTC detecting condition:

Immediately at fault recognition

Wiring diagram:

Engine Electrical System Refer to WIRING SYSTEM (IMPREZA MODEL)>ENGINE ELECTRICAL SYSTEM>WIRING DIAGRAM . Refer to WIRING SYSTEM (CROSSTREK MODEL (EXCEPT FOR HEV))>ENGINE ELECTRICAL SYSTEM>WIRING DIAGRAM .

Courtesy of SUBARU OF AMERICA, INC.

CAUTION: Use the check board when measuring the ECM terminal voltage and resistance. Refer to ENGINE (DIAGNOSTICS) (H4DO (EXCEPT FOR HEV))>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. Refer to ENGINE (DIAGNOSTICS) (H4DO (EXCEPT FOR HEV))>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .

CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ACTUATOR LH (SHORT TO POWER SUPPLY) .
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
  
  (E158) No. 101 (+) - Chassis ground (-):
  
  (E158) No. 110 (+) - 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 actuator LH connector.
  
  No:
  
  Replace the tumble generator valve actuator LH. Refer to FUEL INJECTION (FUEL SYSTEMS) (H4DO (EXCEPT FOR HEV))>TUMBLE GENERATOR VALVE ACTUATOR .
  
  NOTE: The tumble generator valve actuator cannot be disassembled.