2021 Mazda CX-3 AWDFACTORY OEM SERVICE PROCEDURE

Using The M-MDS (Without Coolant Control Valve)

NOTE:
  • PIDs for the following parts are not available on this model. Go to the appropriate part inspection information.
  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

-: 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 {MPA}, mBar {BAR}, 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_TEM P °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 {MPA}, mBar {BAR}, 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 illuminati on status Calculation
  • Charging system warning light not illuminated: Off
  • Charging system warning light illuminated: On
 -
CPP (2) Off/On Clutch pedal position Calculation
  • Clutch pedal released: Off
  • Clutch pedal fully depressed: On
 2J
CPP/PNP (2) Off/On Shift lever position Calculation
  • Other than neutral: Off
  • Neutral: On
 1K
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 (estimate d 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 (estimate d 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
FAN_DUTY % Fan control module Calculation Idle
  • ECT is below 100°C {212°F}: 0 %
  • ECT is above 100°C {212°F}: Approx. 30- 100 % (after a certain period has elapsed from when ECT reaches 100°C {212°F})
 2X
FAN1 Off/On Cooling fan relay operation status Calculation
  • Cooling fan relay off: Off
  • Cooling fan relay on: On
 2AU
FCL (1) Off/On Check fuel cap warning light illuminati on 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
FP_DUTY % Fuel pump control module control duty value Calculation
  • Ignition switched ON (engine off): Approx. 55.74%
  • Cranking: Approx. 95%
  • Idle (after warm up): Approx. 55.74%
 2AE
FTP (1) Pa {KPA}, mBar {BAR}, 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 {MPA}, mBar {BAR}, psi, in H20 Target fuel pressure (high pressure fuel pump) Calculation
  • Displays target fuel pressure (high pressure fuel pump)
 -
FUEL_PRES KPa {MPA}, mBar {BAR}, psi, in H20 Fuel pressure input from fuel pressure sensor Calculation
  • Displays fuel pressure
 1CA
V Fuel pressure sensor voltage Input Idle (ECT 80°C {176°F})
  • Fuel pressure is 3 MPa {31 kgf/cm2 , 435 psi}: Approx. 0.9 V
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. 2:1D W/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 (3) 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 °C, °F Intake air temperature (No. 2) input from IAT sensor No. 2 Calculation
  • Displays IAT (No. 2)
 1CE
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
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 % Idle speed control feedback value Calculation
  • Displays Idle speed control feedback value
 -
ISC_FBK_L RN % Learning value for calculating idle speed control feedback amount Calculation
  • Displays Idle speed control feedback learning value
 -
IVS Off Idle/Idle Idle flag Calculation
  • Racing: Off Idle
  • Idle: Idle
 -
KNOCKR ° (deg) Ignition timing correction for suppressing engine knock (Performs retard correction (negative indication) according to the occurrence of engine knock, and it approaches approx. 0° by the advance correction due to engine knock suppression.) 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%
 -
LONGFT1 2 % 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
 -
M_GEAR (2) Neutral/1st gear/2nd gear/3rd gear/4th gear/5th gear/6th gear/Reverse/Undefined/Auto/In_Progress/YSF/Error Manual gear position Calculation
  • Displays manual gear position
 CAN (2AK, 2AL)
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 {MPA}, mBar {BAR}, psi, in H20 Manifold absolute pressure input from MAP sensor Calculation
  • Displays MAP
 1BW
kMAP_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 condition s required by emission regulation s Calculation
  • Displays number of misfires possibly affecting emission (No. 1 cylinder)
 -
MF_EMI_2 - Number of misfires in No. 2 cylinder under condition s required by emission regulation s Calculation
  • Displays number of misfires possibly affecting emission (No. 2 cylinder)
 -
MF_EMI_3 - Number of misfires in No. 3 cylinder under condition s required by emission regulation s Calculation
  • Displays number of misfires possibly affecting emission (No. 3 cylinder)
 -
MF_EMI_4 - Number of misfires in No. 4 cylinder under condition s required by emission regulation s 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 condition s required by emission regulation s Calculation
  • Displays number of misfire determinations (for emission)
 -
MF_EMI_TTL - Number of misfires (total number in all cylinders) under condition s required by emission regulation s Calculation
  • Displays number of misfires possibly affecting emission (total)
 -
MIL Off/On Check engine light illuminati on status Calculation
  • Check engine light not illuminated: Off
  • Check engine light illuminated: On
 -
MIL_DIS km, ft, mi Travelled distance since check engine light illuminate d 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 (3) 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 LONGFT1 2 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 ° (deg) Ignition timing Calculation
  • Displays ignition timing
 -
TH_M (4)@ - 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 (1) °C, °F Thermostat monitor Calculation
  • Indicates engine coolant temperature when thermostat monitoring is finished
 -
TH_M_MAX (4) - 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_MAX (1) °C, °F Thermostat monitor max Calculation
  • Indicates upper limit of engine coolant temperature for thermostat monitoring execution
 -
TH_M_MIN (4) - 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
 -
TH_M_MIN (1) °C, °F Thermostat monitor min Calculation
  • Indicates lower limit of engine coolant temperature 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 minimum 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_DE S ° (deg) Desired exhaust valve timing Calculation
  • Displays desired exhaust valve timing
 -
VT_IN_ACT ° (deg) 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 ° (deg) 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 ° (deg) 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
(2) MTX
(3) ATX
(4) Until 2017MY and except Mexico
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