Activation Of Malfunction Indicator Light

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 the diagnosis of 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 Location
Courtesy of SUBARU OF AMERICA, INC.
After starting the engine, the malfunction indicator light goes out. If it does not, either the engine or the emission control system is malfunctioning.
Turn the ignition switch to OFF and connect the test mode connector.
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. After the diagnosis is completed, malfunction indicator light does not blink at a cycle of 3 Hz if there is no fault. Malfunction indicator light illuminates when the trouble occurs.
Fig 2: Identifying Blinking Pattern
Courtesy of SUBARU OF AMERICA, INC.