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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Engine Control System (Diagnostics) (HEV) (3 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P2022: TGV Position Sensor/Switch Circuit High Bank 2 >> Notes

DTC P2022: TGV Position Sensor/Switch Circuit High Bank 2: Notes

WARNING: This page is about a different variant/trim than selected.
  1. - 

    DTC detecting condition: 

    Immediately at fault recognition

    Trouble symptom: 

    • Improper idling
    • Engine stall
    • Poor driving performance

    Wiring diagram: 

    Engine Electrical System Ref. to WIRING SYSTEM (CROSSTREK MODEL (HEV))>ENGINE ELECTRICAL SYSTEM .

    G13228028Courtesy of SUBARU OF AMERICA, INC.
CAUTION: Use the check board when measuring the ECM terminal voltage and resistance. Ref. to ENGINE (DIAGNOSTICS) (H4DO (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. Ref. to ENGINE (DIAGNOSTICS) (H4DO (HEV))>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .
G13615495Courtesy of SUBARU OF AMERICA, INC.
  1. CHECK DATA MONITOR  .
    1. Turn the ignition switch to ON.
    2. Using the Subaru Select Monitor, read the value of [TGV Position Sensor L] of the data monitor.
      NOTE: For detailed operation procedures, refer to "Common (Diagnostics)". Ref. to COMMON (DIAG)>DATA MONITOR .

    Is the value of [TGV Position Sensor L] 5 [V] or more?

    Yes:  Go to  2.

    No:  Even if DTC is detected, the circuit has returned to a normal condition at this time.

    Reproduce the failure, and then perform the diagnosis again.

    NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
  2. CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ACTUATOR LH  .
    1. Turn the ignition switch to OFF.
    2. Disconnect the connector from tumble generator valve actuator LH.
    3. Turn the ignition switch to ON.
    4. Using the Subaru Select Monitor, read the value of [TGV Position Sensor L] of the data monitor.
      NOTE: For detailed operation procedures, refer to "Common (Diagnostics)". Ref. to COMMON (DIAG)>DATA MONITOR .

    Is the value of [TGV Position Sensor L] 5 [V] or more?

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

    No:  Go to  3.

  3. CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ACTUATOR LH (OPEN)  .
    1. Turn the ignition switch to OFF.
    2. Measure the resistance of harness between tumble generator valve actuator LH connector and engine ground.

    Connector & terminal 

    (E51) No. 2 - Engine ground:

    Is the resistance less than 5 Ω?

    Yes:  Go to  4.

    No:  Repair the harness and connector.

    NOTE: In this case, repair the following item:
    • Open circuit in harness between ECM connector and tumble generator valve actuator LH connector
    • Poor contact of ECM connector
  4. CHECK FOR POOR CONTACT  .

    Check for poor contact of tumble generator valve actuator LH connector.

    Is there poor contact of the tumble generator valve actuator LH connector?

    Yes:  Repair the poor contact of tumble generator valve actuator LH connector.

    No:  Replace the tumble generator valve actuator LH. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DO (HEV))>TUMBLE GENERATOR VALVE ACTUATOR .

    NOTE: The tumble generator valve actuator cannot be disassembled.
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