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Home >> Mazda >> 2011 >> 6 s Touring Plus >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Symptom Troubleshooting [Engine Mechanical MZR 2.5]) >> No. 9 Fast Idle/Runs On >> Notes

No. 9 Fast Idle/Runs On: Notes

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SYMPTOM CHART (FAST IDLE/RUNS ON)

FAST IDLE/RUNS ON 
DESCRIPTION 
  • Engine speed continues at fast idle after warm-up.
  • Engine runs after ignition is off.
POSSIBLE CAUSE 
  • Cooling fan system malfunction
  • ECT sensor malfunction
  • Improper load signal input
    • Refrigerant pressure sensor malfunction
    • Evaporator temperature sensor malfunction
    • Climate control unit malfunction
    • Communication error between climate control unit and instrument cluster
    • Communication error between instrument cluster and PCM
    • Erratic signal from PSP switch
    • CPP switch malfunction (MTX)
    • Neutral switch malfunction (MTX)
    • TR switch malfunction (ATX)
    • Communication error between TCM and PCM (ATX)
  • Air leakage from intake air system
  • Improper operation of drive-by-wire control system
  • APP sensor malfunction