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Home >> Subaru >> 2016 >> WRX Premium, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Engine Controls (Diagnostics) (H4DOTC) (WRX-STI)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P2091 "B" Camshaft Position Actuator Control Circuit High Bank 1 >> Wiring Diagram

DTC P2091 "B" Camshaft Position Actuator Control Circuit High Bank 1: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK HARNESS BETWEEN ECM AND OIL FLOW CONTROL SOLENOID VALVE RH CONNECTOR. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connectors from ECM and oil flow control solenoid valve RH.
  3. Measure the voltage between ECM connector and chassis ground.

    Connector & terminal 

    (B134) No. 7 (+) - Chassis ground (-): 

    (B134) No. 15 (+) - Chassis ground (-): 

Is the voltage less than 1 V? Go to step 2.  Repair the short circuit to power in harness between ECM connector and oil flow control solenoid valve RH connector.
2 CHECK HARNESS BETWEEN ECM AND OIL FLOW CONTROL SOLENOID VALVE RH CONNECTOR. 
Measure the resistance of harness between ECM connector and oil flow control solenoid valve RH connector.
Connector & terminal 
(B134) No. 7 - (E63) No. 1: 
(B134) No. 15 - (E63) No. 2: 
Is the resistance less than 1 Ω? Go to step 3.  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
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 OIL FLOW CONTROL SOLENOID VALVE . >