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Home >> Subaru >> 2015 >> Forester 2.5i, Eng CD FB25BA, Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (H4DO) >> Drive Cycle >> Procedure >> Drive Cycle H >> Diagnostic procedure

Diagnostic procedure

  1. Perform the Clear Memory Mode. < Ref. to CLEAR MEMORY MODE . >
  2. With the ignition switch ON (engine stopped), read the values in «Coolant Temp.» and «Intake Air Temp.». < Ref. to DISPLAY CURRENT ENGINE DATA , OPERATION, Subaru Select Monitor. >
  3. If the values from step  2) satisfy the following conditions, idle the engine for one minute.

    Condition: 

    Engine coolant temperature - Intake air temperature ≤ 5°C (9°F) 

    NOTE:
    • If the conditions are not satisfied, turn the ignition switch to OFF and wait until the parameters are satisfied.
    • For CVT models, hold the select lever to "P" range or "N" range at idling, and for MT models, the shift lever in the neutral position at idling.
  4. Read the temporary code using the Subaru Select Monitor or general scan tool. < Ref. to OPERATION , Read Diagnostic Trouble Code (DTC). >
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