Using the M-MDS

NOTE:

PIDs for the following parts are not available on this model. Perform the specific inspections for the following parts:
- CMP sensor (See CAMSHAFT POSITION (CMP) SENSOR INSPECTION ).
- Main relay (See RELAY INSPECTION ).

Connect the M-MDS to the DLC-2.
Turn the ignition switch to ON position.
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.
  
  Fig 1: Locating DLC-2 Connector
  Courtesy of MAZDA MOTORS CORP.
- 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, EVAPCP, FAN1, FAN2, FAN3, FP, FUELPW1, GENVDSD, HTR11, HTR12, HTR13^* , IASV, IMRC, IMTV, INJ_1, INJ_2, INJ_3, INJ_4, SEGRP, test, VT DUTY1 Wt
* : California emission regulation applicable ATX model

PID/DATA MONITOR CHART

Monitor item (Definition)

Unit/Condition

Condition/Specification (Reference)

Action

PCM terminal

AAT

°C

°F

Ignition switch at ON position: Indicate the ambient air temperature

Inspect IAT sensor. (See INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION )

AC_REQ (A/C request signal)

ON/OFF

A/C switch and fan switch ON at ignition switch ON: On A/C switch OFF at ignition switch ON: Off

Inspect A/C switch.

1AU

ACCS (A/C relay)

ON/OFF

Ignition switch ON: OFF A/C switch ON and fan switch ON at idle: ON

Inspect following PIDs: RPM, TP, ECT, ACSW, TR. Inspect A/C relay.

AFR (Air fuel ratio)

Ignition switch at ON position: Indicate the air fuel ratio⁽⁴⁾

Inspect following PIDs: O2S11, O2S12, O2S13⁽¹⁾. Inspect fuel injector.

AFR_ACT (Actual air fuel ratio)

Ignition switch at ON position:
Indicate the actual air fuel ratio

Inspect following PIDs: O2S11, O2S12, O2S13⁽¹⁾.
Inspect fuel injector.

ALTF
(Generator field coil control duty value)

Ignition switch ON: 0%
Idle: 0-100%
Just after A/C switch ON and fan switch ON at idle: Duty value rises

Inspect following PIDs: IAT, ECT, RPM, VPWR, ALTT V.
Inspect generator.

2AI

ALTT V
(Generator output voltage)

Ignition switch ON: 0 V
Idle: Approx. 14.9 V (E/L not operating)

Inspect generator.

2AJ

APP
(Accelerator pedal position)

APP released: 0%
APP open: 100%

Inspect following PIDs: APP1, APP2.
Inspect accelerator pedal position sensor.

1AO 1AP

APP1
(Accelerator pedal position sensor 1)

APP released: 31.0-32.4%
APP open: 69.8-81.8%

Inspect accelerator pedal position sensor.

1AO

APP released: 1.55-1.62 V
APP depressed: 3.49-4.09 V

APP 2
(Accelerator pedal position sensor 2)

APP released: 20.2-21.4%
APP depressed: 58.8-70.8%

Inspect accelerator pedal position sensor.

1AP

APP released: 1.01-1.07 V
APP depressed: 2.94-3.54 V

ARPMDES (Target engine speed)

RPM

No load: 700 RPM
E/L operating: 700 RPM
P/S operating: 700 RPM
A/C ON: 750 RPM

Inspect following PIDs: IAT, RPM, MAP, ECT, MAF, TP, INGEAR, ACSW, TR, PSP, ALTT V.
Inspect IAC valve.
Inspect CKP sensor.

BARO (Barometric pressure)

kPa, Bar, psi

Ignition switch ON: Indicate the atmospheric pressure

Inspect BARO, sensor.

Ignition switch ON (at sea level): Approx. 4.0 V

BOO
(Brake switch)

ON/OFF

Brake pedal depressed: ON
Brake pedal released: OFF

Inspect brake switch.

1AB
1AF

BPA
(Brake pressure applied switch)

ON/OFF

Brake pedal depressed: ON
Brake pedal released: OFF

Inspect brake switch.

CATT11_DSD (Desired catalyst temperature bank one, sensor one)

°C

Indicate the estimated catalytic converter temperature

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

CHRGLP (Generator warning light)

ON/OFF

Ignition switch ON: ON
Idle: OFF

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

COLP
(Refrigerant pressure switch (middle))

ON/OFF

Refrigerant pressure switch (middle) ON ⁽⁵⁾ at idle: ON
Refrigerant pressure switch (middle) OFF⁽⁶⁾ at idle: OFF

Inspect refrigerant pressure switch.

CPP⁽³⁾
(Clutch pedal position)

ON/OFF

Clutch pedal depressed: ON
Clutch pedal released: OFF

Inspect clutch pedal position switch.

CPP/PNP⁽³⁾
(Shift lever position)

Drive/Neutral

Neutral position: Neutral
Others: Drive

Inspect neutral switch.

DTCCNT
(Number of DTC detected)

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

ECT
(Engine coolant temperature)

°C

°F

ECT 20°C {68°F}: 20°C {68°F}
ECT 60°C {140°F}: 60°C {140°F}

Inspect ECT sensor.

2AH

ECT 20°C {68°F}: 3.04-3.14 V
ECT 60°C {140°F}: 1.29-1.39 V

EQ_RAT11
(Equivalence ratio (lambda))

Idling after warm-up: Approx. 1

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

2Z 2AC 2AD

EQ_RAT11_DSD
(Desired equivalence ratio (lambda))

Idling after warm-up: Approx. 1

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

2Z 2AC 2AD

ETC_ACT
(Electronic throttle control actual)

Indicate the desired TP by angle

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

2AL 2AK

ETC_DSD
(Electronic throttle control desired)

Indicate the desired TP by percent

Inspect following PIDs:APP1, APP2, ETC_ACT.
Inspect TP sensor.

1AO 1AP

Indicate the desired TP by angle

EVAPCP
(Purge solenoid valve duty value)

Ignition switch ON: 0%
Idle: 0%

Inspect following PIDs: IAT, RPM, ECT, MAF, O2S11, INGEAR, TR, VPWR.

FAN1
(Cooling fan control)

ON/OFF

ECT less than 100°C {212°F}: OFF
Others: ON

Inspect following PIDs: RPM, TP, ECT, ACSW, COLR TEST.
Inspect cooling fan relay.

FAN2
(Cooling fan control)

ON/OFF

ECT less than 108°C {226°F}: OFF
A/C operating, refrigerant pressure switch (middle) is OFF, and ECT less than 108°C {226°F}: OFF
Others: ON

Inspect following PIDs: RPM, TP, ECT, ACSW, COLP, TEST.
Inspect cooling fan relay.

FAN3
(Cooling fan control)

ON/OFF

ECT less than 100°C {212°F}: OFF
A/C operating, refrigerant pressure switch (middle) is ON, and ECT less than 108°C {226°F}: OFF
Other: ON

Inspect following PIDs: RPM, TP, ECT, ACSW, COLP, TEST.
Inspect cooling fan relay.

FLI
(Fuel level)

Fuel gauge level F: Approx. 100%
Fuel gauge level E: Approx. 0%

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

FP
(Fuel pump relay)

ON/OFF

Ignition switch ON: OFF
Idle: ON
Cranking: ON

Inspect following PIDs: RPM.
Inspect fuel pump relay.

FUELPW
(Fuel injector duration)

Ignition switch ON: 0 ms
Idle (after warm up): approx. 2.5 ms

Inspect following PIDs: IAT, MAF, TP, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, ACSW, VPWR, ALTT V.
Inspect fuel injector.

2AZ 2BB 2BC 2BD

FUELSYS
(Fuel system status)

OL7CL/OL-Drive/OL-Fault/CL-Fault

Ignition switch ON: Open loop
Idle (after warm up): Closed loop

Inspect following PIDs: IAT, MAF, TP, MAP, ECT, RPM, O2S11, O2S12, INGEAR, TR, PSP, ACSW, VPWR, ALTT V.
Inspect fuel injector.

GENVDSD
(Generator voltage desired)

Ignition switch ON: 0 V
Idle: Approx. 14.9 V (E/L not operating)

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

HTR11
(HO2S heater (front))

ON/OFF

Idle (after warm up): ON<==>OFF

Inspect following PIDs: IAT, MAF, TP, ECT, RPM, ACSW.

2BG

HTR12
(HO2S heater (middle⁽¹⁾, rear⁽²⁾))

ON/OFF

Ignition switch ON: OFF (HO2S heater not operating)
Idle: ON (HO2S heater operating)

Inspect following PIDs: IAT, MAF, ECT, RPM, ACSW.

2BF⁽¹⁾ 2BE⁽²⁾

HTR13⁽¹⁾
(HO2S heater (rear))

ON/OFF

Ignition switch ON: OFF (HO2S heater not operating)
Idle: ON (HO2S heater operating)

Inspect following PIDs: IAT, MAF, ECT, RPM, ACSW.

2BE

IASV
(Variable air duct control solenoid valve)

ON/OFF

ECT is more than 70°C {158°F}, engine speed is more than 5,800 RPM, and TP opening angle is more than 50%: ON
Others: OFF

Inspect following PIDs: ECT, RPM, TP.
Inspect VAD solenoid valve.

IAT
(Intake air temperature}

°C

°F

Indicate the IAT.

Inspect IAT sensor.

IAT

IAT 0°C {32°F}: Approx. 3.43 V
IAT 20°C {68°F}: Approx. 2.38 V
IAT 40°C {104°F}: Approx. 1.49 V

IMRC
(Variable tumble solenoid valve)

ON/OFF

Engine speed is less than approx. 3,750 RPM: ON
Others: OFF

Inspect following PIDs: TP, ECT, RPM.
Inspect variable tumble solenoid valve.

IMTV
(Variable Intake air control solenoid valve)

ON/OFF

Engine speed is less than approx. 4,500 RPM: ON
Others: OFF

Inspect following PIDs: RPM.
Inspect VIS control solenoid valve.

INGEAR
(Load/no load condition)

ON/OFF

CPP or CPP/PNP is ON: OFF
Others: ON

Perform applicable DTC troubleshooting. ID

IVS
(CTP condition)

IDLE/OFF IDLE

CTP: IDLE
Others: OFF IDLE

Perform applicable DTC troubleshooting.

1AO 1AP

KNOCKR
(Knocking retard)

Ignition switch ON: 0°
Idle: 0°

Inspect knock sensor.

2U 2V

LOP_EVAPCP (EVAP system leak detection pump detect incorrect purge flow)

Indicate the EVAP control system incorrect purge flow detection value

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_IDL (EVAP system leak detection pump idle current)

Indicate the EVAP system leak detection pump idle current

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_MON (EVAP system leak detection pump monitoring current)

Indicate the EVAP system leak detection pump monitoring current

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_REF (EVAP system leak detection pump reference current)

Indicate the EVAP system leak detection pump reference current

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_SLDV (EVAP system small leak detection value)

Indicate the EVAP control system small leak detection value

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_VSL_FV⁽⁷⁾ (EVAP system small leak detection value)

mA/sec

Indicate the EVAP control system vary small leak-fail value

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_VSL_SV⁽⁷⁾ (EVAP system small leak detection value)

mA/sec

Indicate the EVAP control system vary small leak-safe value

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LDP_VSLDV⁽⁷⁾ (EVAP system small leak detection value)

mA/sec

Indicate the EVAP control system vary small leak detection value

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

LOAD (Engine load)

Ignition switch ON: 0%
Idle (after warm up): approx. 19%

Inspect MAF sensor.

LONGFT1 (long term fuel trim)

Idle (after warm up): approx. -14-14%

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

MAF
(Mass airflow)

g/s

Ignition switch ON: approx. 0 g/s
Idle (after warm up): approx. 1.5 g/s

Inspect MAF sensor.

1AK

Ignition switch ON: approx. 0.7 V
Idle (after warm up): approx. 1.3 V

MAP
(Manifold absolute pressure)

kPa, inHg

Ignition switch ON (at sea level):
approx. 101 kPa {29.8 inHg}

Inspect MAP sensor.

2AG

Ignition switch ON (at sea level):
approx. 4.1 V

MIL
(Malfunction indicator lamp)

ON/OFF

Ignition switch ON: ON
Idle: OFF

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

MIL_DIS
(Travelled distance since the MIL illuminated)

km, mile

No DTC: 0 km {0 mile}
DTC detected: Not 0 km {0 mile}

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

NUMKEYS
(Number of keys stored in module)

Indicate the number of the keys stored module

O2S11
(Front oxygen sensor)

Ignition switch ON: 0-1.0 V
Idle (After warm up): 0-1.0 V

Inspect HO2S (front).

2Z 2AC⁽²⁾ 2AD

O2S12
(middle⁽¹⁾, rear⁽²⁾ oxygen sensor)

Idle (After warm up): approx. 0.6 V

Inspect HO2S (middle⁽¹⁾, rear⁽²⁾).

2R⁽¹⁾ 2Q⁽²⁾

O2S13⁽¹⁾
(rear oxygen sensor)

Idle (After warm up): approx. 0.6 V

Inspect HO2S (rear).

PSP
(Power steering pressure switch)

Low/High

Steering wheel in straight ahead position: Low
Others: High

Inspect PSP switch.

RFCFLAG
(Readiness function code)

Learnt/Not Learnt

Before running PCM adaptive memory procedure drive mode: Not Learnt
After running PCM adaptive memory procedure drive mode: Learnt

Run PCM adaptive memory procedure drive mode.

RO2FT1
(rear oxygen sensor fuel trim)

Idle (after warm up): approx. - 0.03-0.03

Perform applicable DTC troubleshooting.

RPM
(Engine speed)

RPM

Indicate the engine speed

Inspect CKP sensor.

SCCS
(Speed control command switch)

Press ON/OFF: Approx. 0 V
Press CANCEL: Approx. 1.2 V
Press SET/COAST: Approx. 3.2 V
Press RES/ACCEL: Approx. 4.2 V
Others: Approx. 5.0 V

Inspect cruise control switch.

SEGRP
(EGR valve (stepping motor) position)

Step

Ignition switch ON: 0 step
Idle: 0 step
Cranking: 0-60 steps

Inspect following PIDs: MAF, TP, ECT, RPM, VSS.
Inspect EGR valve.

2G 2H 2K 2L

SEGRP DSD
(Desired SEGRP valve position)

Idle: 0%

Inspect following PIDs: MAF, TP, ECT, RPM, VSS.

2G 2H 2K 2L

SHRTFT1
(Short term fuel trim)

Idle (after warm up): approx.-30-25%

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

SHRTFT12
(Short term fuel trim bank 1 sensor 2)

Idle (after warm up): Approx.-30-25%

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

SHRTFT13⁽¹⁾
(Short term fuel trim bank 1 sensor 3)

Idle (after warm up): Approx.-30-25%

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

SPARKADV
(Ignition timing)

Ignition switch ON: BTDC 0°
Idle: BTDC approx. 10°

Inspect following PIDs: MAF, TP, ECT, RPM, INGEAR, TR, PSP, ACSW, VPWR.
Inspect ignition timing.

2AT 2AW 2AX 2BA

test
(Test mode)

ON/OFF

TIRESIZE
(Tire Size (rev / mile))

rev/mile

Indicate the tire circumference length

TP REL
(Relative throttle position)

APP released: Approx. 10%
APP depressed: Approx. 93%

Inspect TP sensor.

TP1
(TP)

APP released: 8-12%
APP depressed: 88-94%

Inspect TP sensor.

2AK

APP released: 0.4-0.6 V
APP depressed: 4.4-4.7 V

TP2
(TP)

APP released: 88-92%
APP depressed: 6-12%

Inspect TP sensor.

2AL

APP released: 4.4-4.6 V
APP depressed: 0.3-0.6 V

TPCT
(TP sensor voltage at CTP)

Approx. 0.5 V

Inspect TP sensor.

2AK 2AL

VPWR
(Module supply voltage)

Indicate the Module supply voltage.

Inspect battery.

VSS
(Vehicle speed)

kph, mph

Vehicle speed 20 kph {12 mph}: 20 kph {12 mph}
Vehicle speed 40 kph {25 mph}: 20 kph {12 mph}

Perform applicable DTC troubleshooting.
(See DTC TABLE ).

VT ACT1
(Actual valve timing)

Idle: Approx. 0°

Inspect following PIDs: TP, ECT, RPM.
Inspect OCV.

VT DIFF1
(Difference between target and actual valve timing)

Idle: Approx. 0°

Inspect following PIDs: TP, ECT, RPM.
Inspect OCV.

VT DUTY1
(Oil control valve duty value)

Idle: Approx. 11.5%

Inspect following PIDs: TP, ECT, RPM.
Inspect OCV.

VTC
(Variable tumble shutter valve control)

Off/On

Indicate the condition of the variable tumble shutter valve switch

Inspect following PIDs: IMRC Inspect variable tumble shutter valve switch.

2AE

⁽¹⁾	California emission regulation applicable ATX model

⁽²⁾	Except for California emission regulation applicable ATX model

⁽³⁾

MTX

⁽⁴⁾	Calculated value; differs from terminal voltage

⁽⁵⁾	Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.26-1.49 MPa {12.9-15.1 kgf/cm⁶ , 184-214 psi}

⁽⁶⁾	Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.69-1.84 MPa {17.3-18.7 kgf/cm² , 247-265 psi}

⁽⁷⁾	California emission regulation applicable model