DTC P2088 Intake Camshaft Position Actuator Control Circuit Low (Bank 1): Wiring Diagram

• Engine Electrical System ENGINE TYPE EJ (WITHOUT PUSH BUTTON START) <Ref. to 2.5L TURBO (WITHOUT PUSH BUTTON START), WIRING DIAGRAM, Engine Electrical System.>
• Engine Electrical System ENGINE TYPE EJ (WITH PUSH BUTTON START) <Ref. to 2.5L TURBO (WITH PUSH BUTTON START), WIRING DIAGRAM, Engine Electrical System.>

Fig 1: Intake Camshaft Position Actuator Control (Bank 1) - Wiring Diagram (Low)

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK HARNESS BETWEEN ECM AND OIL FLOW CONTROL SOLENOID VALVE RH CONNECTOR.  Turn the ignition switch to OFF. Disconnect the connectors from ECM and oil flow control solenoid valve RH. Measure the resistance of harness between ECM connector and oil flow control solenoid valve RH connector. Connector & terminal  (B134) No. 34 - (E38) No. 1:  (B134) No. 27 - (E38) No. 2:	Is the resistance less than 1 Ω?	Go to step 2  .	Repair the harness and connector. NOTE: In this case, repair the following item: Open circuit in harness between ECM connector and oil flow control solenoid valve RH connector Poor contact of coupling connector
2 CHECK HARNESS BETWEEN ECM AND OIL FLOW CONTROL SOLENOID VALVE RH CONNECTOR.  Measure the resistance between ECM connector and chassis ground. Connector & terminal  (B134) No. 34 - Chassis ground:  (B134) No. 27 - Chassis ground:	Is the resistance 1 MΩ or more?	Go to step 3  .	Repair the short circuit to ground in harness between ECM connector and oil flow control solenoid valve RH connector.
3 CHECK OIL FLOW CONTROL SOLENOID VALVE.  Measure the resistance between oil flow control solenoid valve terminals. Terminals  No. 1 - No. 2:	Is the resistance 6 - 12 Ω?	Repair the poor contact of ECM and oil flow control solenoid valve RH connector.	Replace the oil flow control solenoid valve RH. <Ref. to CAMSHAFT .>