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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 145 (On-Board Diagnostic - Engine Control (2 Of 5)) >> DTC P0172; PCM Fuel TRIM SYSTEM TOO RICH >> PID Item/Simulation Item Used In Diagnosis

PID Item/Simulation Item Used In Diagnosis

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PID/DATA monitor item table

Item Definition Unit Condition/Specification
APP Accelerator pedal opening angle (relative value) with the fully released status as 0% and fully depressed status as 100% %
  • Accelerator pedal released: Approx. 0%
  • Accelerator pedal fully depressed: Approx. 100%
ECT Engine coolant temperature °C, °F
  • Displays ECT
ECT sensor No. 1 voltage V
  • ECT is 20 °C {68 °F}: Approx. 3.10 V
  • ECT is 40 °C {104 °F}: Approx. 2.16 V
  • ECT is 60 °C {140 °F}: Approx. 1.40 V
  • ECT is 80 °C {176 °F}: Approx. 0.87 V
  • ECT is 100 °C {212 °F}: Approx. 0.54 V
EVAPCP Purge solenoid valve control duty value %
  • Idle (after warm up): 0% (ECT 59 °C {140 °F} or less)
  • Racing (Engine speed 2, 000 rpm): 4.3-35%
  • Racing (Engine speed 4, 000 rpm): Approx. 66%
FP Fuel pump relay operation status Off/On
  • Ignition switched ON (engine off): Off
  • Cranking: On
  • Idle (after warm up): On
FUEL_PRES Fuel pressure KPa {MPA}, mBar {BAR}, psi, in H20
  • Displays fuel pressure
Fuel pressure sensor voltage V
  • Fuel pressure is 3.0 MPa {31 kgf/cm2 , 435 psi}: Approx. 0.92 V
  • Fuel pressure is 4.8 MPa {49 kgf/cm2 , 696 psi}: Approx. 1.17 V
HTR11 A/F sensor heater operation status Off/On
  • Ignition switched ON (engine off): Off
  • Idle (after warm up): On
A/F sensor heater control duty value %
  • Ignition switched ON (engine off): 0%
  • Idle (after warm up): Approx. 40%
MAF Mass air flow g/Sec
  • Displays MAF
MAF sensor voltage V
  • Ignition switched ON (engine off) (MAF: 0.59 g/s {0.078 lb/min}): Approx. 0.72 V
  • Idle (after warm up) (MAF: 2.17 g/s {0.287 lb/min}): Approx. 0.86 V
  • Racing (engine speed is 2, 000 rpm) (MAF: 4.73 g/s {0.626 lb/min}): Approx. 1.07 V
MAP Manifold absolute pressure KPa {MPA}, mBar {BAR}, psi, in H20
  • Displays MAP
MAP sensor voltage V
  • Ignition switched ON (engine off) (MAP:101 kPa {1.03 kgf/cm2 , 14.6 psi}): Approx. 4.07 V
  • Idle (after warm up) (MAP: 33 kPa {0.34 kgf/cm2 , 4.8 psi}): Approx. 1.34 V
  • Racing (engine speed is 2, 000 rpm) (MAP: 26 kPa {0.27 kgf/cm2 , 3.8 psi}): Approx. 1.05 V
IAT2 Intake air temperature (No. 2) °C, °F
  • Displays IAT (No. 2)
IAT sensor No. 2 voltage V
  • IAT2 is 20 °C {68 °F}: Approx. 3.57 V
  • IAT2 is 40 °C {104 °F}: Approx. 2.70 V
  • IAT2 is 60 °C {140 °F}: Approx. 1.87 V
O2S11 A/F sensor current μA
  • Idle (after warm up): Approx. -39 μA
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 3.84 mA
TP_REL Throttle valve opening angle (relative value) with value at throttle valve fully open timing as the start point %
  • Accelerator pedal released: Approx. 12%
  • Accelerator pedal fully depressed: Approx. 82%
VT_EX_ACT Actual exhaust valve timing °
  • Displays actual exhaust valve timing
VT EX_DES Desired exhaust valve timing °
  • Displays desired exhaust valve timing
VT IN_ACT Actual intake valve timing °
  • Displays actual intake valve timing
VT IN_DES Desired intake valve timing °
  • Displays desired intake valve timing

Simulation item table

Item Definition Unit Operation
INJ_1 Fuel injector No. 1 OFF
  • Select OFF to forcibly stop fuel injector No. 1.
INJ_2 Fuel injector No. 2 OFF
  • Select OFF to forcibly stop fuel injector No. 2.
INJ_3 Fuel injector No. 3 OFF
  • Select OFF to forcibly stop fuel injector No. 3.
INJ_4 Fuel injector No. 4 OFF
  • Select OFF to forcibly stop fuel injector No. 4.
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