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HOMESERVICE MANUALSSUBARU2005OUTBACK I, STANDARDREPAIR AND DIAGNOSISENGINE MECHANICALLUBRICATION SYSTEMLUBRICATION (H4SO)OIL PRESSURE SYSTEMINSPECTION
2005 Subaru Outback i, Standard

Oil Pressure System: Inspection

2005 Subaru Outback i, StandardSECTION Inspection
DIAGNOSIS PROCEDURE CHART

Step Check Yes No
1. CHECK COMBINATION METER. 
  1. Turn the ignition switch to ON (engine OFF).
  2. Check the warning light of combination meter.
 Does the warning light illuminate? Go to step 2  . Repair or replace the combination meter. < Ref. to INSPECTION , Combination Meter System. >
2. CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND OIL PRESSURE SWITCH. 
  1. Turn the ignition switch to OFF.
  2. Disconnect the connector from oil pressure switch.
  3. Turn the ignition switch to ON.
  4. Measure the voltage of harness between oil pressure switch connector and chassis ground.

    Connector & terminal 

    (E11) No. 1 (+) - Chassis ground (-): 

 Is the voltage more than 10 V? Replace the oil pressure switch. Go to step 3. 
3. CHECK COMBINATION METER. 
  1. Turn the ignition switch to OFF.
  2. Remove the combination meter.
  3. Measure the resistance of the combination meter.

    Connector & terminal 

    (110) No. 3 - (110) No. 15: 

    (110) No. 4 - (110) No. 15: 

 Is the resistance less than 10 Ω Replace the harness connector between combination meter and oil pressure switch. Repair or replace the combination meter. < Ref. to INSPECTION , Combination Meter System. >
RENDER: 1.0x

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When to See a Mechanic

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.