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Home >> Mazda >> 2018 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine Control >> No. 28 Spark Plug Condition >> Related PIDs

Related PIDs

Item (definition) Unit/Condition Definition Condition/Specification (Reference)
ECT °C, °F Engine coolant temperature input from ECT sensor No. 1
  • Displays ECT
V ECT sensor No. 1 voltage Ignition switched ON (engine off)
  • ECT is 92 °C {198 °F}: Approx. 0.65 V Idle (after warm up)
  • ECT is 93 °C {199 °F}: Approx. 0.64 V Racing (Engine speed is 2, 000 RPM)
  • ECT is 92 °C {198 °F}: Approx. 0.66 V Racing (Engine speed is 4, 000 RPM)
  • ECT is 93 °C {199 °F}: Approx. 0.64 V
MAF g/Sec Mass air flow input from MAF sensor
  • Displays MAF
V MAF sensor voltage
  • Ignition switched ON (engine off) (MAF: 0.39 g/s {0.052 lb/min}): Approx. 0.72 V (ECT is 89 °C {192 °F})
  • Idle (after warm up) (MAF: 4.29 g/s {0.567 lb/min}): Approx. 1.15 V (ECT is 88 °C {190 °F})
  • Racing (engine speed is 2, 000 RPM) (MAF: 4.32 g/s {0.571 lb/min}): Approx. 1.15 V (ECT is 89 °C {192 °F})
  • Racing (engine speed is 4, 000 RPM) (MAF: 12.71 g/s {1.681 lb/min}): Approx. 1.66 V (ECT is 89 °C {192 °F})
O2S11 μA A/F sensor current
  • Idle (after warm up): -59 μA (ECT is 92 °C {198 °F})
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 RPM or more): Approx. 3.48 mA (ECT is 92 °C {198 °F})
O2S12 V HO2S voltage
  • Idle (after warm up): 0-1.0 V (ECT is 91 °C {196 °F})
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 RPM or more): Approx. 0 V (ECT is 92 °C {198 °F})
RPM RPM Engine speed
  • Displays engine speed
VSS KPH, MPH Vehicle speed
  • Displays vehicle speed