Activation Of Malfunction Indicator Light

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When the ignition switch is turned to ON (engine OFF), the malfunction indicator light (A) 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: Identifying Malfunction Indicator Light
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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 Blinking Pattern
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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
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Install the delivery (test) mode fuse (A) with ignition switch to OFF.

Fig 4: Identifying Delivery (Test) Mode Fuse Of Main Fuse Box
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1. When the ignition switch is turned to ON (engine OFF), the malfunction indicator light illuminates.
2. After the engine starts, malfunction indicator light blinks in a cycle of 0.5 Hz. (During diagnosis)
3. Malfunction indicator light blinks at a cycle of 3 Hz after diagnosis if there is no trouble. Malfunction indicator light illuminates if faulty.
Fig 5: Malfunction Indicator Light Blinking Pattern
Courtesy of SUBARU OF AMERICA, INC.