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Home >> Mazda >> 2021 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine Control >> Engine Control System Operation Inspection >> Drive-by-wire Control System Inspection >> Related PIDs
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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
IAT °C, °F Intake air temperature (No. 1) input from IAT sensor No. 1
  • Displays IAT (No. 1)
V IAT sensor No. 1 voltage
  • IAT is 60°C {140°F}: Approx. 1.13 V
  • IAT is 63°C {145°F}: Approx. 1.07 V
  • IAT is 65°C {149°F}: Approx. 1.01 V
RPM RPM Engine speed
  • Displays engine speed


Item (definition) Unit/Condition Definition Condition/Specification (Reference)
RPM RPM Engine speed
  • Displays engine speed