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Home >> Mazda >> 2009 >> 6 i SV, 2.5 A >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (L5) >> Pcm Inspection [L5] >> Using M-MDS
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Using M-MDS

NOTE:
  • PIDs for the following parts are not available on this model. Go to the appropriate part inspection page.
    • CMP sensor
    • Main relay
  1. Connect the M-MDS to the DLC-2.
    2. Fig 1: Identifying DLC-2
    G06205220Courtesy of MAZDA MOTORS CORP.
  2. Switch the ignition to 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.
      • For input/output signals except those of the monitoring items, use a voltmeter to measure the PCM terminal voltage.
      • The simulation items that are used in the ENGINE CONTROL SYSTEM OPERATION INSPECTION are as follows.
        • ACCS, ALTF, ARPMDES, EVAPCP, EVAPCV, FAN_DUTY, FP, HTR11, HTR12, IMRC, IMTV, INJ_1~4, SEGRP, TEST, VT Duty1 wt
PID/DATA MONITOR TABLE (REFERENCE)

Monitor item (Definition) Unit/Condition Condition/Specification (Reference) Inspection item PCM terminal
AAT (Ambient air temperature) °C °F Switch the ignition to ON: Indicates the ambient air temperature IAT sensor 1AT
AC_REQ (A/C request signal) OFF/ON A/C switch OFF. OFF
A/C switch ON. ON		 Perform applicable DTC troubleshooting -
ACCS (A/C relay) OFF/ON A/C relay OFF: OFF
A/C relay ON: ON		 A/C relay
Inspect following PIDs: RPM, TP REL, ECT		 1I
AFR (Target air fuel ratio) - Target air fuel ratio is displayed A/F sensor 2Z
2AC
2AD
AFR_ACT (Actual air fuel ratio) - Actual air fuel ratio is displayed A/F sensor 2Z
2AC
2AD
ALXF (Generator field coil control duty value) % Just after A/C switch ON and fan switch ON at idle. Duty value rises Generator
Inspect following PIDs IAT, ECT, RPM, VPWR, ALTT V.		 2AA
ALTT V (Generator output voltage) V Switch the ignition to ON 0 V
Idle: approx 14 V(1) (E/L not operating)		 Generator 2AF
APP1 (APP sensor No. 1) %
  • Accelerator pedal released: approx. 15 %
  • Accelerator pedal depressed: approx. 80 %
 APP sensor 1AO
V
  • Accelerator pedal released approx 0 8V
  • Accelerator pedal depressed: approx 4 0V
APP2 (APP sensor No 2) %
  • Accelerator pedal released: approx 7 5 %
  • Accelerator pedal depressed: approx. 42 %
 APP sensor 1AP
V
  • Accelerator pedal released: approx 0.4 V
  • Accelerator pedal depressed: approx. 2.0 V
ARPMDES (Target engine speed) RPM
  • Indicate the target engine speed
 CKP sensor
Inspect following PIDs. IAT, RPM, MAP, ECT, MAF, TP REL, INGEAR, ALTT V.		 -
BARO (Barometric pressure) kPa, psi, Bar Indicate the BARO BARO sensor -
V
  • Switch the ignition to ON (at sea level) approx. 4.1 V
BOO (Brake switch) OFF/ON Brake pedal depressed: ON
Brake pedal released: OFF		 Brake switch 1AB
BPA(3) (Brake pressure applied switch) OFF/ON Brake pedal depressed: ON
Brake pedal released. OFF		 Brake switch 1AF
CATT11_DSD (Desired catalyst temperature bank one, sensor one) °C Indicate the estimated catalytic converter temperature Perform applicable DTC troubleshooting. -
CHRGLP (Generator warning light) OFF/ON Switch the ignition to ON: ON Idle. OFF Perform applicable DTC troubleshooting -
COLP (Refrigerant pressure sensor) OFF/ON Refrigerant pressure is above 1.96 Mpa {20 0kgf/cm2 , 284 psi}: ON Refrigerant pressure sensor 1 J
CPP(2) (Clutch pedal position) OFF/ON Clutch pedal depressed: ON
Clutch pedal released: OFF		 CPP switch 1BD
CPP/PNP(2) (Shift lever position) OFF/ON Neutral position: ON
Others: OFF		 Neutral switch 1BC
ECT (Engine coolant temperature) °C °F Indicate the ECT ECT sensor 2AH
V ECT 20 °C {68 °F}: 3.04-3.14 V
ECT 80 °C {176 °F}: 0.76-0.83 V
EQ_RAT11 (Equivalence ratio (lambda)) - Idling after warm-up: approx. 1 Perform applicable DTC troubleshooting. 2Z
2AC
2AD
EQ_RAT11_DSD (Desired equivalence ratio (lambda)) - Idling after warm-up, approx 1 Perform applicable DTC troubleshooting. -
ETC_ACT (Electronic throttle control actual) ° Indicate the desired TP by angle Perform applicable DTC troubleshooting. 2BE, 2BF
ETC_DSD (Electronic throttle control desired) % Indicate the desired TP by percent TP sensor
Inspect following PIDs:APP1, APP2, ETC_ACT.		 -
° Indicate the desired TP by angle
EVAPCP (Purge solenoid valve duty value) % Switch the ignition to ON 0% Idle. 0% Inspect following PIDs: IAT, RPM, ECT, MAF, O2S1 UNGEAR, VPWR. 2C
EVAPCV (Evaporative emission canister vent valve) OFF/ON Simulation item (EVAPCV) is ON: ON CV solenoid valve 1M
FAN_DUTY (Fan control module) %
  • When all of following condition are met: 50%
    • Test mode ON
    • WOT
 Fan control module 1R
FCL (Fuel cap warning light) OFF/ON
  • Fuel cap warning light not illuminated. OFF
  • Fuel cap warning light illuminated: ON
 Perform applicable DTC troubleshooting. -
FLI (Fuel level) %
  • Fuel gauge level F: approx 100%
  • Fuel gauge level E: approx. 0%
 Perform applicable DTC troubleshooting. -
FP (Fuel pump relay) OFF/ON Switch the ignition to ON: OFF Idle. ON
Cranking: ON		 Fuel pump relay
Inspect following PIDs: RPM.		 1BG
FTP (Fuel tank pressure sensor) kPa, psi, Bar Indicate the fuel tank pressure Fuel tank pressure sensor 1AH
V Fuel tank pressure is equal to barometric pressure, approx. 2.625 V
FUELPW (Fuel injector duration) sec Idle (after warm up): approx. 2.2 ms Fuel injector
Inspect following PIDs: IAT, MAF, TP REL, MAP, ECT, RPM, O2S11, O2S12, INGEAR, VPWR, ALTT V.		 2AZ
2BB
2BC
2BD
FUELSYS (Fuel system status) OL/CL/CL-
Fault/OL-
Fault/OL-
Drive		 Idle (after warm up): CL Fuel injector
Inspect following PIDs: IAT, MAF, TP REL, MAP, ECT, RPM, O2S11, O2S12, INGEAR, VPWR, ALTT V.		 -
HTR11 (A/F sensor heater) OFF/ON Idle (after warm up): ON<==>OFF Inspect following PIDs: IAT, MAF, TP REL, ECT, RPM. 2A
HTR12 (HO2S heater) OFF/ON Idle (after warm up): ON<==>OFF Inspect following PIDs: IAT, MAF, ECT, RPM. 2B
IAT (Intake air temperature) °C °F Indicate the IAT IAT sensor 1AT
V IAT 20 °C {68 °F}: approx. 2.38 V
IAT 60 °C {140 °F}: approx. 0.89 V
IMRC (Variable tumble solenoid valve) OFF/ON
  • ECT below 60 °C {140 °F} and engine speed below 3,750 RPM : On
  • ECT above 60 °C {140 °F} while idling.: Off
 Variable tumble solenoid valve Inspect following PIDs: TP REL, ECT, RPM. 2I
IMRC_POS (Variable tumble shutter valve switch) V
  • ECT below 60 °C {140 °F} and engine speed below 3,750 RPM : 3.408-4 432 V
  • ECT above 60 °C {140 °F} while idling. 0.808-1.832 V
 Variable tumble shutter valve switch 2R
IMTV (Variable Intake air control solenoid valve) OFF/ON Engine speed is below approx. 4,400 RPM: On
Others. Off		 Variable intake air control solenoid valve
Inspect following PIDs: RPM.		 2J
INGEAR (Load/no load condition) OFF/ON
  • CPP or CPP/PNP is ON: Off
  • Others On
 Perform applicable DTC troubleshooting. 1BC, IBD
IVS (CTP condition) Idle/Off_Idle
  • CTP. Idle
  • Others Off Idle
 Perform applicable DTC troubleshooting. -
KNOCKR (Knocking retard) ° Switch the ignition to ON: 0°
Idle. 0°		 KS 2U
2V
LOAD (Engine load) % Switch the ignition to ON: 0%
Idle (after warm up): approx. 15%		 MAF sensor -
LONGFT1 (long term fuel trim) % Idle (after warm up) -15-20% Perform applicable DTC troubleshooting. -
MAF (Mass airflow) g/sec Indicate the MAF MAF sensor 1AK
V Switch the ignition to ON: approx. 0.7 V
Idle (after warm up) approx. 1.2 V
MAP (Manifold absolute pressure) kPa, psi, Bar Indicate the MAP MAP sensor 2AG
V
  • Switch the ignition to ON (at sea level) approx. 4 1 V
  • Idle approx. 1.2 V
MIL (Malfunction indicator lamp) OFF/ON
  • DTC stored. On
  • DTC not stored. Off
 Perform applicable DTC troubleshooting. -
MIL_DIS (Travelled distance since the MIL illuminated) km miles Indicate the travelled distance since the MIL illuminated
O2S11 (A/F sensor) A Idle (After warm up): approx. 0 mA A/F sensor 2Z
2AC
2AD
O2S12 (HO2S) V Idle (After warm up): 0-1.0 V HO2S 2Q
PSP (PSP switch) OFF/ON
  • Steering wheel in straight ahead position: OFF
  • Wheel turning steering wheel: ON
 PSP switch 2T
RO2FT1 (HO2S fuel trim) % Idle (after warm up) approx -0.03-0 03 Perform applicable DTC troubleshooting. -
RPM (Engine speed) RPM Indicate the engine speed CKP sensor 2W
SCCS(3) (Speed control command switch) V ON/OFF switch pressed in (OFF): approx. 0 V
CANSEL switch pressed in: approx. 1.3 V
SET(-) switch pressed in: approx. 2.4 V
SET(+) switch pressed in: approx. 3.2 V
RESUME switch pressed in: approx. 3.9 V
ON/OFF switch pressed in (ON): approx. 4 3V		 Cruise control switch 1AQ
SEGRP (EGR valve (stepping motor) position) - Switch the ignition to ON: 0
Idle: 0 step
Cranking 0-52		 EGR valve
Inspect following PIDs: MAF, TP REL, ECT, RPM, VSS.		 2AT,
2AX,
2AW,
2BA
SEGRP DSD (Desired EGR valve position) % Indicate the desired EGR valve position Inspect following PIDs: MAF, TP REL, ECT, RPM, VSS. -
SHRTFT1 (Short term fuel trim) % Idle (after warm up): approx.-25-25% Perform applicable DTC troubleshooting. -
SPARKADV (Ignition timing) ° Indicate the ignition timing Inspect following PIDs: MAF, TP REL, ECT, RPM, INGEAR, VPWR. 2G,
2H,
2K,
2L
TEST (Test mode) OFF/ON Test mode ON: On
Test mode OFF: Off		 - -
TH_M (Thermostat monitor engine coolant temperature) - Indicates heat radiation ratio (heat radiation when thermostat is malfunctioning/heat radiation when thermostat is normal) when thermostat monitoring is finished Thermostat -
°C °F Indicates engine coolant temperature when thermostat monitoring is finished -
TH_M_MAX (Thermostat monitor engine coolant temperature max limit) - Indicates upper limit of heat radiation ratio (heat radiation when thermostat is malfunctioning/heat radiation when thermostat is normal) for thermostat monitoring execution Thermostat -
°C °F Indicates upper limit of engine coolant temperature for thermostat monitoring execution -
TH_M_MIN (Thermostat monitor engine coolant temperature min limit) - Indicates lower limit of heat radiation ratio (heat radiation when thermostat is malfunctioning/heat radiation when thermostat is normal) for thermostat monitoring execution Thermostat -
°C °F Indicates lower limit of engine coolant temperature for thermostat monitoring execution -
TPREL (Relative throttle position) % Accelerator pedal released: approx. 3%
Accelerator pedal depressed: approx. 75%		 TP sensor -
TP1 (TP sensor No. 1) % Accelerator pedal released: approx. 12%
Accelerator pedal depressed: approx. 84%		 TP sensor 2AK
V Accelerator pedal released: approx. 0.6 V
Accelerator pedal depressed: approx. 4.2 V
TP2 (TP sensor No. 2) % Accelerator pedal released: approx. 12%
Accelerator pedal depressed: approx. 84%		 TP sensor 2AL
V Accelerator pedal released: approx. 4.4 V
Accelerator pedal depressed: approx. 0.8 V
TPCT (TP sensor voltage at CTP) V approx. 0.5 V TP sensor 2AK
2AL
VPWR (Battery positive voltage) V Switch the ignition to ON: B+ Battery 1C
VSS (Vehicle speed) KPH Indicate the vehicle speed Perform applicable DTC troubleshooting. -
VT ACT1 (Actual valve timing) ° Idle: approx. 0°
Racing after warm up: 0-25°		 OCV
Inspect following PIDs: TP REL, ECT, RPM		 2E
VT DIFF1 (Difference between target and actual valve timing) ° Idle: approx 0° OCV
Inspect following PIDs: TP REL, ECT, RPM		 2E
VT DUTY1 (Oil control valve duty value) % Idle: approx. 11.5% OCV
Inspect following PIDs: TP REL, ECT, RPM.		 2E
(1) Calculated value; differs from terminal voltage

(2) MTX

(3) Vehicles equipped with cruise control switch
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