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
- CHECK GROUND CONNECTIONS
- Turn ignition switch OFF.
- Loosen and retighten ground three screws on the body.
Refer to GROUND INSPECTION .
OK or NG
OK: GO TO 2.
NG: Repair or replace ground connections.
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR CONNECTOR FOR WATER
- Disconnect EVAP control system pressure sensor harness connector.
- Check sensor harness connector for water.
Water should not exist.
OK or NG
OK: GO TO 3.
NG: Repair or replace harness connector.
- CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to COMPONENT INSPECTION .
OK or NG
OK: GO TO 4.
NG: Replace EVAP control system pressure sensor.
- CHECK INTERMITTENT INCIDENT
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .
For wiring diagram, refer to WIRING DIAGRAM .
: INSPECTION END
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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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