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

DTC detecting condition:

Immediately at fault recognition

Trouble symptom:

Improper idling
Engine stalls.
Poor driving performance

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.
Use the check board when measuring the ECM terminal voltage and resistance.

Wiring diagram:

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

Fig 1: TGV Position Sensor/Switch - Wiring Diagram (High Bank 2)

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK CURRENT DATA. Start the engine. Read the value of «TGV Position Sensor L» using the Subaru Select Monitor. NOTE: For detailed operation procedures, refer to "Current Data Display For Engine". Ref. to SUBARU SELECT MONITOR	Is the value of «TGV Position Sensor L» 5 V or more?	Go to step 2	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 CONNECTOR. Turn the ignition switch to OFF. Disconnect the connector from tumble generator valve actuator LH. Start the engine. Read the value of «TGV Position Sensor L» using the Subaru Select Monitor. NOTE: For detailed operation procedures, refer to "Current Data Display For Engine". Ref. to SUBARU SELECT MONITOR	Is the value of «TGV Position Sensor L» 5 V or more?	Repair the short circuit to power in harness between ECM connector and tumble generator valve actuator LH connector.	Go to step 3
3 CHECK HARNESS BETWEEN ECM AND TUMBLE GENERATOR VALVE ACTUATOR LH CONNECTOR. Turn the ignition switch to OFF. 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?	Go to step 4	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?	Repair the poor contact of tumble generator valve actuator LH connector.	Replace the tumble generator valve actuator LH. Ref. to TUMBLE GENERATOR VALVE