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Home >> Subaru >> 2007 >> Impreza WRX STi >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Diagnostics) (STI) >> Drive Cycle >> Procedure >> Drive Cycle H

Drive Cycle H

  1. Perform the Clear Memory Mode. <Ref. to CLEAR MEMORY MODE .>
  2. With the ignition switch ON, read the engine coolant temperature, intake air temperature and fuel temperature. <Ref. to READ CURRENT DATA FOR ENGINE (NORMAL MODE) , OPERATION, Subaru Select Monitor .>
  3. If the values from step  2) satisfy the following two conditions, start the engine.

    Condition: 

    /Engine coolant temperature - intake air temperature/ ≤ 5°C (41°F) 

    /Engine coolant temperature - fuel temperature/ ≥ 2°C (36°F) 

    NOTE:
    • If the conditions are not satisfied, turn the ignition switch to OFF and wait until the parameters are satisfied.
    • Start the engine in the N position.
  4. Idle the engine for 1 minute under the conditions in step  3).
DTC CHART

DTC Item Condition
*P1602 ECM error (cold start) -
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