Safety Warning
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.
Diagnostic Procedure
- Inspection Start
Which malfunction (P0102 or P0103) is duplicated?
- P0102 or P0103
- P0102: GO TO 2.
- P0103: GO TO 3.
Check the following for connection.Check Intake System
- Air duct
- Vacuum hoses
- Intake air passage between air duct and intake manifold
- OK or NG
- OK: GO TO 3.
- NG: Reconnect the parts.
- Check Ground Connections
- Turn ignition switch OFF.
- Loosen and retighten two ground screws. Refer to GROUND INSPECTION .
- OK or NG
- OK: GO TO 4.
- NG: Repair or replace ground connections.
- Check MAF Sensor Power Supply Circuit
- Disconnect mass air flow (MAF) sensor harness connector.
- Turn ignition switch ON.
- Check voltage between MAF sensor terminals 2, 4 and ground with CONSULT-II or tester.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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