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Home >> Mazda >> 2016 >> CX-3 Touring, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (Service Information) >> Pcm Inspection >> Using The M-MDS
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Using The M-MDS

NOTE:
  1. Connect the M-MDS  to the DLC-2.
  2. Switch the ignition ON (engine off).
  3. Measure the PID value.
    • If PID value is not within the specification, follow the instructions in action column.
NOTE:
  • The PID/DATA MONITOR function monitors the calculated value of the input/output signals in the PCM. Therefore, an output device malfunction is not directly indicated as a malfunction of the monitored value for the output device. If a monitored value of an output device is out of specification, inspect the monitored value of the input device related to the output control.
  • The simulation items that are used in the engine control system operation inspection are as follows.
    • ACCS, ARPMDES, EVAPCP, FAN1, FAN3, FP, INJ_1, INJ_2, INJ_3, INJ_4, OIL_P_SOL, VT_EX_DES

-: Not applicable

Item (definition) Unit/Condition Definition Value type Condition/Specification (Reference) PCM terminal
AAT(1) °C, °F Ambient air temperature -
  • Displays ambient air temperature
 2I
AC_PRES KPa, mBar, psi, in H20 Refrigerant pressure input from refrigerant pressure sensor Calculation
  • Displays refrigerant pressure
 2AX
V Refrigerant pressure sensor voltage Input
  • Refrigerant pressure is 449 kPa {4.58 kgf/cm2 , 65.1 psi}: Approx. 0.76 V
  • Refrigerant pressure is 729 kPa {7.43 kgf/cm2 , 106 psi}: Approx. 1.18 V
AC_REQ Off/On A/C switch status received by PCM via CAN Input
  • A/C switch off: Off
  • A/C switch on: On
 CAN
(2AK, 2AL)
ACCS Off/On A/C relay status input from A/C relay Input
  • A/C relay off: Off
  • A/C relay on: On
 2AF
ALTF % Field coil current control signal output to generator Calculation
  • Ignition switched ON (engine off): 0%
  • Idle: Approx. 41-54%
  • Racing (Engine speed is 2, 000 rpm): Approx. 24- 34%
 1BE
ALTF_ACT % Actually measured value of field coil current signal input from generator Calculation
  • Displays actual generator field current control duty value
 -
ALTT V V Generator output voltage Input
  • Idle (no E/L): Approx. 14 V (This is internal calculation value and differs from terminal voltage)
 1AF
AMB_TEMP °C, °F Actually measured ambient temperature input from ambient temperature sensor Calculation
  • Displays ambient air temperature
 2I
APP % Accelerator pedal opening angle (relative value) with the fully released status as 0% and fully depressed status as 100% Calculation
  • Accelerator pedal released: Approx. 0%
  • Accelerator pedal fully depressed: Approx. 100%
 -
APP1 % Accelerator pedal opening angle (absolute value) input from APP sensor No. 1 Calculation
  • Accelerator pedal released: Approx. 16%
  • Accelerator pedal fully depressed: Approx. 91%
 2AN
V APP sensor No. 1 voltage Input
  • Accelerator pedal released: Approx. 0.78 V
  • Accelerator pedal fully depressed: Approx. 4.54 V
APP2 % Accelerator pedal opening angle (absolute value) input from APP sensor No. 2 Calculation
  • Accelerator pedal released: Approx. 7.84%
  • Accelerator pedal fully depressed: Approx. 45.49%
 2AS
V APP sensor No. 2 voltage Input
  • Accelerator pedal released: Approx. 0.39 V
  • Accelerator pedal fully depressed: Approx. 2.27 V
ARPMDES RPM Target engine speed Calculation
  • Displays target engine speed
 -
BARO KPa, mBar, psi, in H20 Actually measured barometric pressure input from barometric pressure sensor built into PCM Calculation
  • Displays BARO
 -
BOO High/Low Brake switch (No. 1 signal) input status Calculation
  • Brake pedal released: Low
  • Brake pedal fully depressed: High
 2G
BPA High/Low Brake switch (No. 2 signal) input status Calculation
  • Brake pedal released: Low
  • Brake pedal fully depressed: High
 2R
CATT11_DSD °C, °F Estimated catalytic converter temperature Calculation
  • Displays estimated catalytic converter temperature

Idle (after warm up) 
  • ECT is 88 ° C {190 ° F}: Approx. 304 °C {579 °F}
 -
CHRGLP Off/On Charging system warning light illumination status Calculation
  • Charging system warning light not illuminated: Off
  • Charging system warning light illuminated: On
 -
ECT °C, °F Engine coolant temperature input from ECT sensor No. 1 Calculation
  • Displays ECT
 1AK
V ECT sensor No. 1 voltage Input Ignition switched ON (engine off) 
  • ECT is 29 °C {84 °F}: Approx. 2.65 V

    Idle (after warm up) 

  • ECT is 88 °C {190 °F}: Approx. 0.71 V
ECT2_V(1) V ECT sensor No. 2 voltage Input Ignition switched ON (engine off) 
  • ECT is 29 °C {84 °F}: Approx. 2.65 V

    Idle (after warm up) 

  • ECT is 88 °C {190 °F}: Approx. 0.71 V
 2F
EQ_RAT11 - Excess air factor (estimated value) to theoretical air/fuel ratio (14.7) by fuel feedback control Calculation Idle (after warm up) 
  • ECT is 89 °C {192 °F}: Approx. 1
 -
EQ_RAT11_DSD - Target excess air factor (estimated value) to theoretical air/fuel ratio (14.7) by fuel feedback control Calculation
  • Indicate target lambda (Excess air factor = supplied air amount/theoretical air/fuel ratio)
 -
ETC_ACT ° Actual throttle valve opening angle Calculation Ignition switched ON (engine off) 
  • Accelerator pedal released: Approx. 12.89 °
  • Accelerator pedal fully depressed: Approx. 86.03 °

    Idle (after warm up) 

  • Accelerator pedal released: Approx. 2.77- 2.84 ° (ECT is 89 °C {192 °F})
 -
ETC_DSD ° Target throttle valve opening angle Calculation
  • Displays target TP opening angle

Ignition switched ON (engine off) 
  • Accelerator pedal released: Approx. 12.9 °
  • Accelerator pedal fully depressed: Approx. 86 °
 -
% Target throttle valve opening angle (percent) Calculation
  • Displays target TP opening angle (percent)

Ignition switched ON (engine off) 
  • Accelerator pedal released: Approx. 14.9%
  • Accelerator pedal fully depressed: Approx. 100 %
EVAPCP % Purge solenoid valve control duty value Calculation
  • Idle (after warm up): 0% (Engine coolant temperature 59 °C {140 ° F} or less)
  • Racing (Engine speed 2, 000 rpm): 33-35% (ECT is 94 °C {201 °F})
  • Racing (Engine speed 4, 000 rpm): 53-55% (ECT is 94 °C {201 °F})
 1AI
EVAPCV(1) Off/On CV solenoid valve operation status Calculation
  • Simulation item (EVAPCV) is ON: On
 2BF
FAN1 Off/On Cooling fan relay No. 2 operation status Calculation
  • Cooling fan relay No. 2 off: Off
  • Cooling fan relay No. 2 on: On
 2AU
FAN3 Off/On Cooling fan relay No. 1 operation status Calculation
  • Cooling fan relay No. 1 off: Off
  • Cooling fan relay No. 1 on: On
 2AV
FCL(1) Off/On Check fuel cap warning light illumination status Calculation
  • Check fuel cap warning light not illuminated: Off
  • Check fuel cap warning light illuminated: On
 -
FIA - Fuel injection amount Calculation
  • Displays fuel injection amount

Idle (after warm up) 
  • ECT is 90 ° C {194 ° F}: Approx. 6
 -
FLI % Fuel level Calculation
  • Fuel gauge level F: Approx. 100%
  • Fuel gauge level E: Approx. 0%
 CAN (2AK, 2AL)
FP Off/On Fuel pump relay operation status Calculation
  • Ignition switched ON (engine off): Off
  • Cranking: On
  • Idle (after warm up): On
 2AQ
FTP(1) KPa, mBar, psi, in H20 Fuel tank pressure Calculation
  • Displays fuel tank pressure
 2Y
V Fuel tank pressure sensor voltage Input
  • Fuel tank pressure is equal to barometric pressure: Approx. 2.6 V
FUEL_P_DSD KPa, mBar, psi, in H20 Target fuel pressure (high pressure fuel pump) Calculation
  • Displays target fuel pressure (high pressure fuel pump)

    Ignition switched ON (engine off) 

    • Fuel pressure: Approx. 12 MPa {122 kgf/cm2 , 1740 psi}

      Idle (after warm up) 

    • ECT is 91 ° C {196 ° F}: Fuel pressure is 3.3-3.8 MPa {34- 38 kgf/cm2 , 479-551 psi}
 -
FUEL_PRES KPa, mBar, psi, in H20 Fuel pressure input from fuel pressure sensor Calculation
  • Displays fuel pressure
 1CA
V Fuel pressure sensor voltage Input Ignition switched ON (engine off) 
  • Fuel pressure is approx. 16.91 MPa {172.4 kgf/cm2 , 2453 psi}: Approx. 2.91 V

    Idle (after warm up) 

  • Fuel pressure is 3.44- 3.95 MPa {35.1-40.2 kgf/cm2 , 499-572 psi}: 0.98-1.05 V (ECT is 90 ° C {194 °F})
FUELPW Sec Fuel injection pulse width (fuel injector energization time) output to fuel injector Calculation
  • Idle (after warm up): Approx. 1.71 ms
  • Racing (engine speed is 2, 000 rpm): Approx. 1.35 ms
  • Racing (engine speed is 4, 000 rpm): Approx. 1.21 ms
 No. 1:1DO/1DP
No. 2:1DW/1DX
No. 3:1EA/1EB
No. 4:1DS/1DT
FUELSYS OL/CL/
OL_Drive/
OL_Fault/
CL_Fault		 Feedback status of fuel injection control is displayed
OL: Feedback control is disabled at cold engine start
CL: During feedback control by A/F sensor and HO2S
OL_Drive: While feedback control is stopped
OL_Fault: Feedback control is disable due to system malfunction
CL_Fault: During feedback control with either A/F sensor or HO2S having a malfunction		 Calculation
  • Idle (after warm up): OL or CL
  • Racing (engine speed is 2, 000 rpm): CL
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): OL-Drive
 -
GEAR Unknown/1st/2nd/3rd/4th/5th/6th/Not in P/Park/Neutral/Drive/Reverse Gear commanded Calculation
  • Selector lever at P position: Park
  • Selector lever at R position: Reverse
  • Selector lever at N position: Neutral
  • Selector lever is in D or M position while vehicle is stopped: 1st
 CAN (2AK, 2AL)
HTR11 Off/On A/F sensor heater operation status Calculation
  • Ignition switched ON (engine off): Off
  • Idle (after warm up): On
 1BY
% A/F sensor heater control duty value Calculation
  • Ignition switched ON (engine off): 0%
  • Idle (after warm up): 32- 34%
HTR12 Off/On HO2S heater operation status Calculation
  • Ignition switched ON (engine off): Off
  • Idle (after warm up): On
 2C
% HO2S heater control duty value Calculation
  • Ignition switched ON (engine off): 0%
  • Idle (after warm up): 41- 48%
IAT °C, °F Intake air temperature (No. 1) input from IAT sensor No. 1 Calculation
  • Displays IAT (No. 1)
 2U
V IAT sensor No. 1 voltage Input
  • IAT is 20 °C {68 °F}: Approx. 2.70 V
  • IAT is 40 °C {104 °F}: Approx. 1.80 V
  • IAT is 60 °C {140 °F}: Approx. 1.20 V
IAT2 V IAT sensor No. 2 voltage Input
  • 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
 1CE
INGEAR Off/On Gears are engaged Calculation
  • Selector lever is in R, D, or M position: On
  • Except above: Off
 CAN (2AK, 2AL)
ISC_FBK % ISC feedback value Calculation
  • Displays ISC feedback value
 -
IVS Off Idle/Idle Idle flag Calculation
  • Racing: Off Idle
  • Idle: Idle
 -
KNOCKR ° Camshaft retard amount when knocking determined Calculation
  • Ignition switched ON (engine off): 0 °
  • Idle (after warm up): 0 °
 -
LOAD % Ratio of actual amount of intake air to the maximum air charging amount (mass volume) of cylinder Calculation
  • Idle (after warm up): Approx. 22.35%
  • Racing (engine speed is 2, 000 rpm): Approx. 17.25%
  • Racing (engine speed is 4, 000 rpm): Approx. 19.21%
 -
LONGFT1 % Fuel learning correction amount estimated based on A/F sensor signal Calculation
  • Idle (after warm up): Approx. -6.25%
  • Racing (engine speed is 2, 000 rpm): Approx. -3.9%
  • Racing (engine speed is 4, 000 rpm): Approx. -3.9%
 -
LONGFT12 % Fuel learning correction amount estimated based on HO2S signal Calculation
  • Idle (after warm up): 0%
 -
LOW_OIL Never Detected/Detected Engine oil pressure condition
  • Never Detected: Engine oil pressure is high
  • Detected: Engine oil pressure is low
 Calculation
  • Ignition switched ON (engine off): Detected
  • Idle (after warm up): Detected
  • Racing (engine speed is 2, 000-4, 000 rpm): Never Detected
 1P
LRN_KCS - Knock control system learning value Calculation
  • Displays knock control system learning value
 -
MAF g/Sec Mass air flow input from MAF sensor Calculation
  • Displays MAF
 2BC
V MAF sensor voltage Input
  • 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. 0.97 V
  • Racing (engine speed is 2, 000 rpm) (MAF: 4.73 g/s {0.626 lb/min}): Approx. 1.26 V
MAP KPa, mBar, psi, in H20 Manifold absolute pressure input from MAP sensor Calculation
  • Displays MAP
 1BW
MAP_V V MAP sensor voltage Input
  • Ignition switched ON (engine off) (MAP:101 kPa {1.03 kgf/cm2 , 14.6 psi}): Approx. 4.12 V
  • Idle (after warm up) (MAP: 33 kPa {0.34 kgf/cm2 , 4.8 psi}): Approx. 1.9 V
  • Racing (engine speed is 2, 000 rpm) (MAP: 26 kPa {0.27 kgf/cm2 , 3.8 psi}): Approx. 1.23 V
MF_CAT1 - Number of misfires in No. 1 cylinder leading to catalytic converter temperature increase (catalytic converter temperature increases due to fuel combustion around catalytic converter after misfire) Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 1 cylinder)
 -
MF_CAT_2 - Number of misfires in No. 2 cylinder leading to catalytic converter temperature increase (catalytic converter temperature increases due to fuel combustion around catalytic converter after misfire) Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 2 cylinder)
 -
MF_CAT_3 - Number of misfires in No. 3 cylinder leading to catalytic converter temperature increase (catalytic converter temperature increases due to fuel combustion around catalytic converter after misfire) Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 3 cylinder)
 -
MF_CAT_4 - Number of misfires in No. 4 cylinder leading to catalytic converter temperature increase (catalytic converter temperature increases due to fuel combustion around catalytic converter after misfire) Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 4 cylinder)
 -
MF_CAT_FCC - Threshold of malfunction determination for number of misfires (total number in all cylinders) leading to catalytic converter temperature increase Calculation
  • Displays number of misfire determinations (for catalytic converter)
 -
MF_CAT_TTL - Number of misfires (total number in all cylinders) leading to catalytic converter temperature increase Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (total)
 -
MF_EMI1 - Number of misfires in No. 1 cylinder under conditions required by emission regulations Calculation
  • Displays number of misfires possibly affecting emission (No. 1 cylinder)
 -
MF_EMI_2 - Number of misfires in No. 2 cylinder under conditions required by emission regulations Calculation
  • Displays number of misfires possibly affecting emission (No. 2 cylinder)
 -
MF_EMI_3 - Number of misfires in No. 3 cylinder under conditions required by emission regulations Calculation
  • Displays number of misfires possibly affecting emission (No. 3 cylinder)
 -
MF_EMI_4 - Number of misfires in No. 4 cylinder under conditions required by emission regulations Calculation
  • Displays number of misfires possibly affecting emission (No. 4 cylinder)
 -
MF_EMI_FCC - Threshold of malfunction determination for number of misfires (total number in all cylinders) under conditions required by emission regulations Calculation
  • Displays number of misfire determinations (for emission)
 -
MF_EMI_TTL - Number of misfires (total number in all cylinders) under conditions required by emission regulations Calculation
  • Displays number of misfires possibly affecting emission (total)
 -
MIL Off/On Check engine light illumination status Calculation
  • Check engine light not illuminated: Off
  • Check engine light illuminated: On
 -
MIL_DIS km, ft, mi Travelled distance since check engine light illuminated Calculation
  • Displays travelled distance since check engine light illuminated
 -
O2S11 μA A/F sensor current Input
  • Idle (after warm up): 0- 50 μA
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 3.84 mA
 1AB
O2S12 V HO2S voltage Input
  • Idle (after warm up): 0- 1.0 V
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 0 V
 2AI/2AG
OIL_P_SOL Off/On Engine oil solenoid valve operation status Calculation
  • ECT below 98 °C {208 °F} and engine speed below 4, 000 rpm: On
  • ECT above 98 °C {208 °F} or engine speed above 4, 000 rpm: Off
 1AS
OIL_TEMP °C, °F Estimated engine oil temperature Calculation
  • Displays estimated engine oil temperature
 -
PN_SW Open/Closed Parking/neutral Calculation
  • Selector lever at P position or N position: Closed
  • Except above: Open
 CAN (2AK, 2AL)
RO2FT1 % Fuel correction amount based on HO2S signal including SHRTFT12 and LONGFT12 Calculation
  • Idle (after warm up): Approx. 0%
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 3.99%
 -
RPM RPM Engine speed Calculation
  • Displays engine speed
 1AD
SHRTFT1 % Fuel feedback correction amount estimated based on A/F sensor signal Calculation
  • Idle (after warm up): Approx. 0%
  • Racing (engine speed is 2, 000 rpm): Approx. 1.56%
  • Racing (engine speed is 4, 000 rpm): Approx. -4.68%
 -
SHRTFT12 % Fuel feedback correction amount estimated based on HO2S signal Calculation
  • Idle (after warm up): 0%
 -
SPARKADV ° Ignition timing Calculation
  • Displays ignition timing
 -
TH_M(1) - Thermostat monitor Calculation
  • Indicates heat radiation ratio (heat radiation when thermostat is malfunctioning/heat radiation when thermostat is normal) when thermostat monitoring is finished
 -
TH_M_MAX(1) - Thermostat monitor max Calculation
  • Indicates upper limit of heat radiation ratio (heat radiation when thermostat is malfunctioning/heat radiation when thermostat is normal) for thermostat monitoring execution
 -
TH_M_MIN(1) - Thermostat monitor min Calculation
  • Indicates lower limit of heat radiation ratio (heat radiation when thermostat is malfunctioning/heat radiation when thermostat is normal) for thermostat monitoring execution
 -
TP_REL % Throttle valve opening angle (relative value) with value at throttle valve fully close timing as the start point Calculation
  • Accelerator pedal released: Approx. 12%
  • Accelerator pedal fully depressed: Approx. 82%
 -
TP1 % Throttle valve position No. 1 Calculation
  • Accelerator pedal released: Approx. 22%
  • Accelerator pedal fully depressed: Approx. 92%
 1BP
V TP sensor No. 1 voltage Input
  • Accelerator pedal released: Approx. 1.11 V
  • Accelerator pedal fully depressed: Approx. 4.59 V
TP2 % Throttle valve position No. 2 Calculation
  • Accelerator pedal released: Approx. 22%
  • Accelerator pedal fully depressed: Approx. 92%
 1BU
V TP sensor No. 2 voltage Input
  • Accelerator pedal released: Approx. 3.92 V
  • Accelerator pedal fully depressed: Approx. 0.41 V
TPCT V TP sensor No. 1 minimum voltage at CTP Calculation
  • Ignition switched ON (engine off): Approx. 0.5 V
 1BP
TPCT2 V TP sensor No. 2 maximum voltage at CTP Calculation
  • Ignition switched ON (engine off): Approx. 4.5 V
 1BU
VPWR V Battery positive voltage Input
  • Displays battery voltage
 2O
VSS KPH, MPH Vehicle speed Calculation
  • Displays vehicle speed
 CAN (2AK, 2AL)
VT_EX_DES ° Desired exhaust valve timing Calculation
  • Displays desired exhaust valve timing
 -
VT_IN_ACT ° Actual intake valve timing Calculation
  • Displays actual intake valve timing

    Idle (after warm up) 

  • Approx. 57 °

    Racing (engine speed is 2, 000 rpm) 

  • Approx. 84 °
 1Y
VT_IN_DES ° Desired intake valve timing Calculation
  • Displays desired intake valve timing

Idle (after warm up) 
  • Approx. 0 °

    Racing (engine speed is 2, 000 rpm) 

  • Approx. 29 °
 -
VT_EX_ACT ° Actual exhaust valve timing Calculation
  • Displays actual exhaust valve timing
 1Y, 1T
VT_EX_DUTY % OCV control duty value Calculation
  • Idle (after warm up): 0%
  • Racing (engine speed is 2, 000 rpm): Approx. 40%
 1AN
(1) U.S.A. and CANADA
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