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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Control System (Diagnostics) (P0171 To P0685) (H4DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0335 Crankshaft Position Sensor "A" Circuit >> Notes

DTC P0335 Crankshaft Position Sensor "A" Circuit: Notes

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

DTC detecting condition: 

Immediately at fault recognition

Trouble symptom: 

CAUTION:

Wiring diagram: 

Engine Electrical System Ref. to WIRING SYSTEM>Engine Electrical System>WIRING DIAGRAM .

Fig 1: Crankshaft Position Sensor A Circuit - Wiring Diagram
G11272763Courtesy of SUBARU OF AMERICA, INC.
  1. CHECK INSTALLATION CONDITION OF CRANKSHAFT POSITION SENSOR  .

    Is the crankshaft position sensor installation bolt tightened securely?

  2. CHECK CRANKSHAFT POSITION SENSOR  .
    1. Turn the ignition switch to OFF.
    2. Remove the crankshaft position sensor.
    3. Measure the resistance between terminals of crankshaft position sensor.

    Terminals 

    No. 1 -No. 2:

    Is the resistance between 1 and 4 kΩ?

  3. CHECK HARNESS BETWEEN ECM AND CRANKSHAFT POSITION SENSOR CONNECTOR  .
    1. Disconnect the connector from ECM.
    2. Measure the resistance of harness between ECM connector and crankshaft position sensor connector.

    Connector & terminal 

    (B135) No. 40 - (E10) No. 1:

    (B135) No. 27 - (E10) No. 2:

    Is the resistance less than 1 Ω?

    • Yes: Repair the poor contact of ECM and crankshaft position sensor connector.
    • No: repair the harness and connector.
      NOTE: In this case, repair the following item:
      • Open circuit in harness between ECM connector and crankshaft position sensor connector
      • Poor contact of coupling connector