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Home >> Subaru >> 2017 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics - Introduction) (2.0L) >> Malfunction Indicator Light >> Activation Of Malfunction Indicator Light
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Activation Of Malfunction Indicator Light

  1. When the ignition switch is turned to ON (engine OFF), the malfunction indicator light in the combination meter illuminates.
    NOTE: If the malfunction indicator light does not illuminate, perform diagnostics of the malfunction indicator light circuit or the combination meter circuit. <Ref. to MALFUNCTION INDICATOR LIGHT DOES NOT COME ON , Malfunction Indicator Light.>
    Fig 1: Malfunction Indicator Light Location
    G11577034Courtesy of SUBARU OF AMERICA, INC.
  2. After starting the engine, the malfunction indicator light goes out. If it does not go off, any of the engine and emission control system has malfunction.
    Fig 2: Malfunction Indicator Light On/Off Pattern
    G11577035Courtesy of SUBARU OF AMERICA, INC.
  3. If the diagnostic system detects a misfire which could damage the catalyst, the malfunction indicator light will blink at a cycle of 1 Hz.
Fig 3: Malfunction Indicator Light Blinking Pattern
G11577036Courtesy of SUBARU OF AMERICA, INC.