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Mazda
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2005
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6 s, 4D Hatchback, Automatic
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Repair and Diagnosis
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Engine Performance
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System
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Symptom Troubleshooting (Engine Control System AJ)
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No. 9 Fast Idle/Runs On
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Notes
No. 9 Fast Idle/Runs On: Notes
DESCRIPTION & POSSIBLE CAUSE
9
Fast idle/runs on
DESCRIPTION
Engine speed continues at fast idle after warm-up.
Engine runs after ignition switch is turned to OFF position.
POSSIBLE CAUSE
ECT sensor malfunction
Air leakage from intake-air system
Throttle body malfunction
APP sensor misadjustment
Cruise control system operation improperly
Improper operation of electronic throttle control system