2023 Mazda CX-5 SFACTORY OEM SERVICE PROCEDURE

Using The M-MDS

NOTE:
  1. Connect the M-MDS to the DLC-2.
  2. Switch the ignition ON.
  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, AIRSHUT_DSD, ARPMDES, EVAPCP, EVAPCV, FAN1, FAN2, FP, INJ_1, INJ_2, INJ_3, INJ_4, LAFS_CM, OIL_P_SOL, Test

    -: Not applicable

Item (definition) Unit/Condition Value type Condition/Specification (Reference)
AAT (Ambient air temperature) °C, °F  
  • Displays ambient air temperature
AC_PRES (Refrigerant pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays refrigerant pressure
V Input
  • Refrigerant pressure is 1.0 MPa {10 kgf/cm 2 , 145 psi}: Approx. 1.58 V
  • Refrigerant pressure is 1.1 MPa {11 kgf/cm 2 , 160 psi}: Approx. 1.75 V
  • Refrigerant pressure is 1.2 MPa {12 kgf/cm 2 , 174 psi}: Approx. 1.88 V
AC_REQ (A/C request signal) Off/On Input
  • A/C switch OFF: Off
  • A/C switch ON: On
ACCS (A/C relay) Off/On Input
  • A/C relay is OFF: Off
  • A/C relay is ON: On
AIRSHUT_ACT (1) (Active air shutter position) % Calculation
  • Active air shutter position is 0°: 0%
  • Active air shutter position is 90°: 100%
AIRSHUT_CAL (1)(Active air shutter position) Not Done/Completed Calculation
  • Displays active air shutter fully open/closed position learning status
ALTF (Generator field coil control duty value) % Calculation
  • Ignition switched ON (engine off): 0%
  • Idle: Approx. 46%
  • Racing (Engine speed is 2, 000 rpm): Approx. 36%
ALTF_ACT (Actually measured value of field coil current signal input from generator) % Calculation
  • Displays actual generator field current control duty value
AMB_TEMP (Ambient air temperature) °C, °F Calculation
  • Displays ambient air temperature
APP (Accelerator pedal position) % Calculation
  • Accelerator pedal released: Approx. 0%
  • Accelerator pedal depressed: Approx. 100%
APP1 (APP sensor No. 1) % Calculation
  • Accelerator pedal released: Approx. 15%
  • Accelerator pedal depressed: Approx. 90.58%
V Input
  • Accelerator pedal released: Approx. 0.75
  • Accelerator pedal depressed: Approx. 4.52 V
APP2 (APP sensor No. 2) % Calculation
  • Accelerator pedal released: Approx. 7.45%
  • Accelerator pedal depressed: Approx. 45.49%
V Input
  • Accelerator pedal released: Approx. 0.38
  • Accelerator pedal depressed: Approx. 2.26 V
ARPMDES (Target engine speed) RPM Calculation
  • Displays target engine speed
BARO (Barometric pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays BARO
BOO (Brake switch No. 1 signal) High/Low Calculation
  • Brake pedal released: Low
  • Brake pedal depressed: High
BPA (Brake switch No. 2 signal) High/Low Calculation
  • Brake pedal released: Low
  • Brake pedal depressed: High
BT_AH_ACCMLTD (Battery accumulated amp hour (Ah)) - Calculation
  • Displays battery accumulated amp hour
CATT11_DSD (Estimated catalytic converter temperature) °C, °F Calculation
  • Displays estimated catalytic converter temperature
CHRGLP (Charging system warning light) Off/On Calculation
  • Charging system warning light not illuminated: Off
  • Charging system warning light illuminated: On
CLR_DIST (Distance after DTC cleared) - Calculation
  • Displays the mileage after DTC cleared
DIS_EMD (Total traveled distance after EVAP monitoring is completed) km, ft, mi Calculation
  • Displays total traveled distance after EVAP monitoring is completed
ECT (Engine coolant temperature) °C, °F Calculation
  • Displays ECT
V Input
  • 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
ECT2_V (ECT sensor No. 2 voltage) V Input
  • 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
ENG_CL_V_POS (Coolant control valve opening angle) ° (deg) Calculation
  • Displays target coolant control valve opening angle
ENG_CL_V_POS_R (Coolant control valve opening angle raw) ° (deg) Input
  • Ignition switched ON (engine off): Approx. 114°
ENG_EX_FLW (Engine exhaust flow rate) - Calculation
  • Displays engine exhaust flow rate
ENG_FRCTN_PER (Engine friction percent torque) % Calculation
  • Displays engine friction percent torque
EOL (Engine oil level) mm, in Calculation
  • Displays engine oil level
EOP (Engine oil pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Switch ignition ON (engine off): 0-1 kPa {0.00-0.01 kgf/cm 2 , 0.0-0.1 psi}
  • Idle: Approx. 150 kPa {1.53 kgf/cm2, 21.8 psi}
EOT2 (Engine oil temperature from engine oil level sensor) - Calculation
  • Displays engine oil temperature
EQ_RAT11 (Equivalence ratio (lambda)) - Calculation
  • Idle (after warm up): Approx. 1
EQ_RAT11_DSD (Desired equivalence ratio (lambda)) - Calculation
  • Indicate target lambda (Excess air factor = supplied air amount/theoretical air/fuel ratio)
ETC_ACT (Electric throttle control actual) ° (deg) Calculation Ignition switched ON (engine off) 
  • Accelerator pedal released: Approx. 12.89°
  • Accelerator pedal depressed: Approx. 86.03°

    Idle (after warm up) 

  • Accelerator pedal released: Approx. 3.87.
ETC DSD (Electric throttle control desired) % Calculation
  • Displays target TP angle (percent)
° (deg) Calculation
  • Displays target TP angle
EVAPCP (Purge solenoid valve duty value) % Calculation
  • Idle (after warm up): 0% (Engine coolant temperature 59°C {140°F} or less)
  • Racing (Engine speed 2, 000 rpm): Approx. 4.7%
  • Racing (Engine speed 4, 000 rpm): Approx. 35.35%
EVAPCV (Evaporative emission canister vent valve) Off/On Calculation
  • Simulation item (EVAPCV) is ON: On
FAN DUTY Displays in the M-MDS but it does not operate.
FAN1 (Cooling fan relay No. 1) Off/On Calculation
  • Cooling fan relay No. 1 not operating: Off
  • Cooling fan relay No. 1 operating: On
FAN2 (Cooling fan relay No. 2) Off/On Calculation
  • Cooling fan relay No. 2 not operating: Off
  • Cooling fan relay No. 2 operating: On
FAN3 Displays in the M-MDS but it does not operate.
FCL (Check fuel cap warning light) Off/On 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
FLI (Fuel level) % Calculation
  • Fuel gauge level F: Approx. 100%
  • Fuel gauge level E: Approx. 0%
FP (Fuel pump relay) Off/On Calculation
  • Ignition switched ON (engine off): Off
  • Cranking: On
  • Idle (after warm up): On
FP_DUTY (Fuel pump control module) % Calculation
  • Ignition switched ON (engine off): Approx. 56.72%
  • Cranking: Approx. 95%
  • Idle (after warm up): Approx. 56.72%
FRP (Fuel distributor pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays fuel distributor pressure
FRP_A (Actual fuel distributor pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Ignition switched ON (engine off): Approx. 3.36 MPa {34.3 kgf/cm 2 , 487 psi}
  • Idle (after warm up): Approx. 2.96-3.13 MPa {30.2-31.9 kgf/cm 2 , 430-453 psi}
  • Racing (engine speed is 2, 000 rpm): Approx. 3.3 MPa {34 kgf/cm 2 , 479 psi}
  • Racing (engine speed is 4, 000 rpm): Approx. 4.94 MPa {50.4 kgf/cm 2 , 716 psi}
FRP_A_CMD (Target fuel distributor pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Ignition switched ON (engine off): Approx. 6 MPa {61 kgf/cm 2 , 870 psi}
  • Idle (after warm up): Approx. 3.1 MPa {32 kgf/cm 2 , 450 psi}
  • Racing (engine speed is 2, 000 rpm): Approx. 3.37 MPa {34.4 kgf/cm 2 , 489 psi}
  • Racing (engine speed is 4, 000 rpm): Approx. 4.97 MPa {50.7 kgf/cm 2 , 721 psi}
FRP_A_CMD_S (Presence/non-presence of target fuel distributor pressure) No/Yes Calculation
  • With fuel distributor: Yes
  • Without fuel distributor: No
FRP_A_S (Presence/non-presence of actual fuel distributor) No/Yes Calculation
  • With fuel distributor: Yes
  • Without fuel distributor: No
FRT_A (Fuel distributor temperature) - Calculation
  • Displays fuel distributor temperature
FT_A_S (Presence/non-presence of fuel distributor temperature) No/Yes Calculation
  • With fuel distributor: Yes
  • Without fuel distributor: No
FTP (Fuel tank pressure sensor) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays fuel tank pressure
V Input
  • Fuel tank pressure is equal to barometric pressure: Approx. 2.5 V
FUEL_P_DSD (Fuel pressure desired) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays target fuel pressure
FUEL_PRES (Fuel pressure sensor) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays fuel pressure
V Input Idle (ECT 80°C {176°F})
  • Fuel pressure is 10 MPa {102 kgf/cm 2 , 1450 psi}: Approx. 1.4 V
FUELPW (Fuel injector duration) Sec Calculation
  • Idle (after warm up): Approx. 1.26 ms
  • Racing (engine speed is 2, 000 rpm): Approx. 1.2 ms
  • Racing (engine speed is 4, 000 rpm): Approx. 1.1 ms
FUELSYS (Fuel system status) OL/CL/OL Drive/OL Fault/CL_Fault 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 (Gear commanded) Unknown/1st/2nd/3rd/4th/5th/6th/Not in P/Park/Neutral/Drive/Reverse Calculation
  • Selector lever at P position: Park
  • Selector lever at R position: Reverse
  • Selector lever at N position: Neutral
  • Selector lever in 1GR at D position: 1st
HTR11 (A/F sensor heater) Off/On Calculation
  • Ignition switched ON (engine off): Off
  • Idle (after warm up): On
% Calculation
  • Ignition switched ON (engine off): 0%
  • Idle (after warm up): Approx. 43%
HTR12 (HO2S heater control) Off/On Calculation
  • Ignition switched ON (engine off): Off
  • Idle (after warm up): On
% Calculation
  • Ignition switched ON (engine off): 0%
  • Idle (after warm up): Approx. 53%
IAT (Intake air temperature No. 1) °C, °F Calculation
  • Displays IAT (No. 1)
V 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 Calculation
  • Displays IAT (No. 2)
(Intake air temperature No. 2) V 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 (Gears are engaged) Off/On Calculation
  • Selector lever at P position or N position: Off
  • Except above: On
ISC_FBK (ISC feedback value) % Calculation
  • Displays ISC feedback value
ISC_FBK_LRN (Learning value for calculating ISC feedback amount) % Calculation
  • Displays learning value for calculating ISC feedback amount
IVS (Idle flag) Off Idle/Idle Calculation
  • Other than idling: Off Idle
  • Idle: Idle
KNOCKR (Ignition timing correction for suppressing engine knock) (2) ° (deg) Calculation
  • Ignition switched ON (engine off): 0°
  • Idle (after warm up): 0°
LAFS_CM Displays in the M-MDS but it does not operate.
LOAD (Engine load) % Calculation
  • Idle (after warm up): Approx. 16.07%
  • Racing (engine speed is 2, 000 rpm): Approx. 13.33%
  • Racing (engine speed is 4, 000 rpm): Approx. 15.29%
LONGFT1 (Long term fuel trim) % Calculation
  • Idle (after warm up): Approx. -3.9%
  • Racing (engine speed is 2, 000 rpm): Approx. -0.78%
  • Racing (engine speed is 4, 000 rpm): Approx. -0.78%
LONGFT12 (Long term fuel trim (HO2S)) % Calculation
  • Idle (after warm up): Approx. 0%
LOW_OIL (Engine Oil Level Status) Never Detected/Detected Calculation
  • Ignition switched ON (engine off): Detected
  • Idle (after warm up): Never Detected
LRN_KCS (Knock control system learning value) - Calculation
  • Displays knock control system learning value
MAF (Mass airflow) g/Sec Calculation
  • Displays MAF
V Input
  • Ignition switched ON (engine off) (MAF: 0.00 g/s {0 lb/min}): Approx. 1.69 V (ECT is 53°C {127°F})
  • Idle (after warm up) (MAF: 2.50 g/s {0.331 lb/min}): Approx. 1.89 V (ECT is 93°C {199°F})
  • Racing (engine speed is 2, 000 rpm) (MAF: 3.80 g/s {0.503 lb/min}): Approx. 2.02 V (ECT is 95°C {203°F})
MAP (Manifold absolute pressure) KPa {MPA }, mBar {BAR }, psi, in H20 Calculation
  • Displays MAP
MAP_V (MAP sensor voltage) V Input
  • Ignition switched ON (engine off) (MAP:100 kPa {1.02 kgf/cm 2 , 14.5 psi}): Approx. 4.04 V
  • Idle (after warm up) (MAP: 35 kPa {0.36 kgf/cm 2 , 5.1 psi}): Approx. 1.40 V
  • Racing (engine speed is 2, 000 rpm) (MAP: 26 kPa {0.27 kgf/cm 2 , 3.8 psi}): Approx. 1.01 V
MF_CAT_2 (Number of misfires corresponding to possible catalytic converter damage (No. 2 cylinder)) - Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 2 cylinder)
MF_CAT_3 (Number of misfires corresponding to possible catalytic converter damage (No. 3 cylinder)) - Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 3 cylinder)
MF_CAT_4 (Number of misfires corresponding to possible catalytic converter damage (No. 4 cylinder)) - Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 4 cylinder)
MF_CAT_FCC (Number of misfire determinations (for catalytic converter)) - Calculation
  • Displays number of misfire determinations (for catalytic converter)
MF_CAT_TTL (Number of misfires corresponding to possible catalytic converter damage (total)) - Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (total)
MF_CAT1 (Number of misfires corresponding to possible catalytic converter damage (No. 1 cylinder)) - Calculation
  • Displays number of misfires corresponding to possible catalytic converter damage (No. 1 cylinder)
MF_EMI_2 (Number of misfires possibly affecting emission (No. 2 cylinder)) - Calculation
  • Displays number of misfires possibly affecting emission (No. 2 cylinder)
MF_EMI_3 (Number of misfires possibly affecting emission (No. 3 cylinder)) - Calculation
  • Displays number of misfires possibly affecting emission (No. 3 cylinder)
MF_EMI_4 (Number of misfires possibly affecting emission (No. 4 cylinder)) - Calculation
  • Displays number of misfires possibly affecting emission (No. 4 cylinder)
MF_EMI_FCC (Number of misfire determinations (for emission)) - Calculation
  • Displays number of misfire determinations (for emission)
MF_EMI_TTL (Number of misfires possibly affecting emission (total)) - Calculation
  • Displays number of misfires possibly affecting emission (total)
MF_EMI1 (Number of misfires possibly affecting emission (No. 1 cylinder)) - Calculation
  • Displays number of misfires possibly affecting emission (No. 1 cylinder)
MIL (Check engine light) Off/On Calculation
  • Check engine light not illuminated: Off
  • Check engine light illuminated: On
MIL_DIS (Travelled distance since the check engine light illuminated) km, ft, mi Calculation
  • Displays travelled distance since the check engine light illuminated
O2S11 (A/F sensor) uA Input
  • 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
O2S12 (HO2S) V 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
OIL_P_SOL (Engine oil solenoid valve) Off/On Calculation
  • ECT above 98°C {208°F} or engine speed above 4, 000 rpm: Off
  • ECT below 98°C {208°F} and engine speed below 4, 000 rpm: On
OIL_PRES (Engine oil solenoid valve) V Calculation
  • Displays estimated engine oil pressure
OIL_TEMP (Estimated engine oil) °C, °F Calculation
  • Displays estimated engine oil temperature
V Calculation
  • Displays estimated engine oil temperature voltage
PN_SW (Parking/neutral) Open/Closed Calculation
  • Selector lever at P position or N position: Closed
  • Except above: Open
RO2FT1 (HO2S fuel trim) % Calculation
  • Idle (after warm up): Approx. 1.5%
  • Deceleration fuel cut (accelerator pedal released from engine speed of 4, 000 rpm or more): Approx. 3.99%
RPM (Engine speed) RPM Calculation
  • Displays engine speed
SHRTFT1 (Short term fuel trim) % Calculation
  • Idle (after warm up): Approx. 2.34%
  • Racing (engine speed is 2, 000 rpm): Approx. 3.9%
  • Racing (engine speed is 4, 000 rpm): Approx. 1.56%
SHRTFT12 (Short term fuel trim (HO2S)) % Calculation
  • Idle (after warm up): Approx. 0%
SPARKADV (Ignition timing) ° (deg) Calculation
  • Displays ignition timing
Test (Test mode) Off/On Calculation
  • Test mode OFF: Off
  • Test mode ON: On
TH M (Thermostat monitor) °C, °F Calculation
  • Displays thermostat monitor engine coolant temperature
- Calculation
  • Displays thermostat monitor heat radiation ratio
TH M MAX (Thermostat monitor) - Calculation
  • Displays thermostat monitor engine coolant temperature (max limit)
- Calculation
  • Displays thermostat monitor heat radiation ratio (max limit)
TH M MIN (Thermostat monitor) °C, °F Calculation
  • Displays thermostat monitor engine coolant temperature (min limit)
- Calculation
  • Displays thermostat monitor heat radiation ratio (min limit)
Time_D_LR (Lean to rich delayed time) Sec Calculation
  • Displays lean to rich delayed time
Time_D_RL (Rich to lean delayed time) Sec Calculation
  • Displays rich to lean delayed time
Time_SR_LR (Lean to rich slow response time) Sec Calculation
  • Displays lean to rich slow response time
Time_SR_RL (Rich to lean slow response time) Sec Calculation
  • Displays rich to lean slow response time
TP_REL (Relative throttle position) % Calculation
  • Accelerator pedal released: Approx. 12%
  • Accelerator pedal depressed: Approx. 82%
TP1 (TP sensor No. 1) V Input
  • Accelerator pedal released: Approx. 1.11
  • Accelerator pedal depressed: Approx. 4.59 V
% Calculation
  • Accelerator pedal released: Approx. 22%
  • Accelerator pedal depressed: Approx. 92%
TP2 (TP sensor No. 2) V Input
  • Accelerator pedal released: Approx. 3.92
  • Accelerator pedal depressed: Approx. 0.41 V
% Calculation
  • Accelerator pedal released: Approx. 22%
  • Accelerator pedal depressed: Approx. 92%
TPCT (TP sensor No. 1 voltage at CTP) V Input
  • Ignition switched ON (engine off): Approx. 0.5 V
TPCT2 (TP sensor No. 2 voltage at CTP) V Input
  • Ignition switched ON (engine off): Approx. 4.5 V
VPWR (Battery positive voltage) V Input
  • Displays battery voltage
VSS (Vehicle speed) KPH, MPH Calculation
  • Displays vehicle speed
VT_Adv_CM VT_CM  
  • Displays in the M-MDS but it does not operate.
VT EX_DES (Desired exhaust valve timing) ° (deg) Calculation
  • Displays desired exhaust valve timing
VT IN_ACT (Actual intake valve timing) ° (deg) Calculation
  • Displays actual intake valve timing
VTIN_DES (Desired intake valve timing) ° (deg) Calculation
  • Displays desired intake valve timing
VT_EX_ACT (Actual exhaust valve timing) ° (deg) Calculation
  • Displays actual exhaust valve timing
VT EX DUTY (OCV control) % Calculation
  • Idle (after warm up): Approx. 0%
  • Racing (engine speed is 2, 000 rpm): Approx. 40%
(1) With active air shutter

(2) 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.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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