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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSUBARU1998LEGACY BRIGHTON WAGON AWD F4-2.2L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSYMPTOM RELATED DIAGNOSTIC PROCEDURESCHECK ENGINE/MALFUNCTION INDICATOR LAMP (MIL) DIAGNOSIS
1998 Subaru Legacy Brighton Wagon AWD F4-2.2L SOHC
Check Engine/Malfunction Indicator Lamp (MIL) Diagnosis
1998 Subaru Legacy Brighton Wagon AWD F4-2.2L SOHCSECTION Check Engine/Malfunction Indicator Lamp (MIL) Diagnosis
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT COME ON.
DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
TROUBLE SYMPTOM:
- When ignition switch is turned ON (engine OFF), MIL does not come on.
WIRING DIAGRAM
PROCEDURES
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT GO OFF.
DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is shorted.
TROUBLE SYMPTOM:
- Although MIL comes on when engine runs, trouble code is not shown on Subaru select monitor or OBD-II general scan tool display.
WIRING DIAGRAM:
PROCEDURES
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT BLINK AT A CYCLE OF 3 Hz.
DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
- Test mode connector circuit is in open.
TROUBLE SYMPTOM:
- When inspection mode, MIL does not blink at a cycle of 3 Hz.
WIRING DIAGRAM
PROCEDURES
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) REMAINS BLINKING AT A CYCLE OF 3 Hz.
DIAGNOSIS:
- Test mode connector circuit is shorted.
TROUBLE SYMPTOM:
- Even though test mode connector is disconnected, MIL blinks at a cycle of 3 Hz when ignition switch is turned to ON.
WIRING DIAGRAM:
PROCEDURES
DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
TROUBLE SYMPTOM:
- When ignition switch is turned ON (engine OFF), MIL does not come on.
WIRING DIAGRAM
PROCEDURES
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT GO OFF.
DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is shorted.
TROUBLE SYMPTOM:
- Although MIL comes on when engine runs, trouble code is not shown on Subaru select monitor or OBD-II general scan tool display.
WIRING DIAGRAM:
PROCEDURES
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) DOES NOT BLINK AT A CYCLE OF 3 Hz.
DIAGNOSIS:
- The CHECK ENGINE malfunction indicator lamp (MIL) circuit is open or shorted.
- Test mode connector circuit is in open.
TROUBLE SYMPTOM:
- When inspection mode, MIL does not blink at a cycle of 3 Hz.
WIRING DIAGRAM
PROCEDURES
CHECK ENGINE MALFUNCTION INDICATOR LAMP (MIL) REMAINS BLINKING AT A CYCLE OF 3 Hz.
DIAGNOSIS:
- Test mode connector circuit is shorted.
TROUBLE SYMPTOM:
- Even though test mode connector is disconnected, MIL blinks at a cycle of 3 Hz when ignition switch is turned to ON.
WIRING DIAGRAM:
PROCEDURES
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.