2005 Subaru Baja Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Check Engine Control Module

ENGINE CONTROL MODULE

Step Check Yes No
1 CHECK ENGINE CONTROL MODULE SIGNAL. 
  1. Start the engine.
  2. Measure voltage between engine control module connector and engine ground.

Connector & terminal 
TURBO model: 
(B134) No. 23 (+) - Engine ground (-): 
NON-TURBO model: 
(B134) No. 10 (+) - Engine ground (-): 		 Is the measured value within 0 V to 14 V? Go to step 2.  Check engine control module. < Ref. to BASIC DIAGNOSTIC PROCEDURE . > or < Ref. to BASIC DIAGNOSTIC PROCEDURE . >
2 CHECK HARNESS BETWEEN COMBINATION METER AND ENGINE CONTROL MODULE. 
  1. Turn ignition switch to OFF.
  2. Disconnect connector from engine control module and combination meter.
  3. Measure resistance between engine control module harness connector and combination meter harness connector.

Connector & terminal 
TURBO model: 
(B134) No. 23 - (i11) No. 7: 
NON-TURBO model: 
(B134) No. 10 - (i11) No. 7: 		 Is the measured value less than 10 ohm? Check tachometer. < Ref. to , REMOVAL , Tachometer. > Repair wiring harness.
Factory Service Tools

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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.