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HOMESERVICE MANUALSSUBARU1994LEGACY L, 4D SEDAN, FWD, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODESDIAGNOSTIC CODE TESTINGCODE 13 - CAM ANGLE SENSOR
1994 Subaru Legacy L, 4D Sedan, FWD, Standard

Code 13 - Cam Angle Sensor

1994 Subaru Legacy L, 4D Sedan, FWD, StandardSECTION Code 13 - Cam Angle Sensor
NOTE: Refer to illustration for ECU connector and terminal identification. See Figure .
  1. Disconnect cam angle sensor connector. Connect voltmeter set to low-volt AC scale between cam angle sensor terminals. Crank engine and ensure voltage fluctuates at lease 0.1 volt with RPM. If voltage does not fluctuate, replace cam angle sensor. If voltage fluctuates, go to next step.
  2. Disconnect ECU and cam angle sensor connectors. Measure resistance between ECU connector and cam angle sensor connector. See the ECU CONNECTOR & CAM ANGLE SENSOR RESISTANCE  table. Repair harness if not within specifications.
    ECU CONNECTOR & CAM ANGLE SENSOR RESISTANCE

    ECU & Cam Angle Sensor Terminals Ohms
    Non-Turbo
    No. 4 (1) & No. 1 Zero
    No. 5 (1) & No. 2 Zero
    No. 6 (1) & No. 3 One (Max.)
    Turbo
    No. 1 (2) & No. 1 Zero
    No. 2 (2) & No. 2 Zero
    No. 3 (2) & No. 3 One (Max.)
    (1) Measure at ECU connector B58.
    (2) Measure at ECU connector B56.
  3. Measure resistance between cam angle sensor connectors and ground. At least one megohm should be present. Reconnect ECU connector and measure resistance between cam angle sensor sealed terminal (Yellow wire) and ground. Less than one ohm should be present. Disconnect crank angle sensor connector and measure resistance between sealed terminal (Yellow wire) and ground. Less than one ohm should be present.
  4. If resistances are not to specification, repair harness and/or connector. If resistances are to specification, check ECU terminals for poor contact or replace ECU.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.