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Home >> Mazda >> 2016 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine >> No. 12 Lack/Loss Of Power-Acceleration/Cruise >> Related PIDs

Related PIDs

Item (definition) Unit/Condition Definition Condition/Specification (Reference)
APP1 % Accelerator pedal opening angle (absolute value) input from APP sensor No. 1
  • Accelerator pedal released: Approx. 15.29%
  • Accelerator pedal fully depressed: Approx. 90.98%
V APP sensor No. 1 voltage
  • Accelerator pedal released: Approx. 0.77 V
  • Accelerator pedal fully depressed: Approx. 4.55 V
APP2 % Accelerator pedal opening angle (absolute value) input from APP sensor No. 2
  • Accelerator pedal released: Approx. 7.84%
  • Accelerator pedal fully depressed: Approx. 45.49%
V APP sensor No. 2 voltage
  • Accelerator pedal released: Approx. 0.38 V
  • Accelerator pedal fully depressed: Approx. 2.27 V
CPP (MT) Off/On Clutch pedal position
  • Clutch pedal released: Off
  • Clutch pedal fully depressed: On
CPP/PNP (MT) Off/On Shift lever position
  • Neutral: On
  • Other than neutral: Off
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
FUEL_PRES KPa, mBar, psi, in H20 Fuel pressure input from fuel pressure sensor
  • Displays fuel pressure
V Fuel pressure sensor voltage Ignition switched ON (engine off) 
  • Fuel pressure is approx. 3.6 MPa {37 kgf/cm2 , 522 psi}: Approx. 1.01 V (ECT is 92 °C {198 ° F})

Idle (after warm up) 
  • Fuel pressure is approx. 3.45 MPa {35.2 kgf/cm2 , 500 psi}: Approx. 1 V (ECT is 92 °C {198 °F})

Racing (Engine speed is 2, 000 rpm) 
  • Fuel pressure is approx. 3.21 MPa {32.7 kgf/cm2 , 466 psi}: Approx. 0.96 V (ECT is 86 ° C {187 °F})

Racing (Engine speed is 4, 000 rpm) 
  • Fuel pressure is approx. 5.59 MPa {57.0 kgf/cm2 , 811 psi}: Approx. 1.29 V (ECT is 84 ° C {183 °F})
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
LOAD % Ratio of actual amount of intake air to the maximum air charging amount (mass volume) of cylinder
  • Idle (after warm up): Approx. 27.05% (ECT is 91 °C {196 °F})
  • Racing (engine speed is 2, 000 rpm): Approx. 16.86% (ECT is 89 °C {192 °F})
  • Racing (engine speed is 4, 000 rpm): Approx. 17.64% (ECT is 87 °C {189 °F})
LONGFT1 % Fuel learning correction amount estimated based on A/F sensor signal
  • Idle (after warm up): Approx. -1.56% (ECT is 91 °C {196 °F})
  • Racing (engine speed is 2, 000 rpm): 2.34% (ECT is 89 °C {192 °F})
  • Racing (engine speed is 4, 000 rpm): 2.34% (ECT is 87 °C {189 °F})
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})
MAP KPa, mBar, psi, in H20 Manifold absolute pressure input from MAP sensor
  • Displays MAP
MAP_V V MAP sensor voltage
  • Ignition switched ON (engine off) (MAP:101 kPa {1.03 kgf/cm2 , 14.6 psi}): Approx. 4.08 V (ECT is 89 °C {192 °F})
  • Idle (after warm up) (MAP: 31 kPa {0.32 kgf/cm2 , 4.5 psi}): Approx. 1.25 V (ECT is 88 ° C {190 °F})
  • Racing (engine speed is 2, 000 rpm) (MAP: 32 kPa {0.33 kgf/cm2 , 4.6 psi}): Approx. 1.31 V (ECT is 89 °C {192 °F})
  • Racing (engine speed is 4, 000 rpm) (MAP: 49 kPa {0.50 kgf/cm2 , 7.1 psi}): Approx. 2.03 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
SHRTFT1 % Fuel feedback correction amount estimated based on A/F sensor signal
  • Idle (after warm up): Approx. 0% (ECT is 91 ° C {196 °F})
  • Racing (engine speed is 2, 000 rpm): Approx. 0.78% (ECT is 89 °C {192 °F})
  • Racing (engine speed is 4, 000 rpm): Approx. -21.87% (ECT is 87 °C {189 °F})
TP_REL % Throttle valve opening angle (relative value) with value at throttle valve fully close timing as the start point
  • Accelerator pedal released: Approx. 12.15%
  • Accelerator pedal fully depressed: Approx. 81.96%
VSS KPH, MPH Vehicle speed
  • Displays vehicle speed
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