Using the M-MDS

NOTE:

PIDs for the following parts are not available on this model. Go to the appropriate component part inspection .
- CMP sensor
- Main relay

Connect the SST (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 "Inspection item (s)" column.

Fig 1: Identifying DLC-2

Courtesy of MAZDA MOTORS CORP.

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, FAN1, FAN2, FAN3, FP, FUELPW1, GENVDSD, HTR11, HTR12, IMTV, INJ_1, INJ_2, INJ_3, INJ_4, SEGRP, test, VT DUTY1 Wt

PID/DATA MONITOR REFERENCE

Item (definition)

Unit/Condition

Condition/Specification (Reference)

Inspection item(s)

PCM terminal

AAT (Ambient air temperature)

°C

°F

Ignition switch is turned to the ON position: Indicates the ambient air temperature

The following PIDs
- IAT

AC_REQ (Refrigerant pressure switch (high, low)

Off/On

Refrigerant pressure is more than the specification or less than the specification. (Refrigerant pressure switch (high, low) is off): Off
Except above: On

Refrigerant pressure switch (high, low)

1AU

ACCS (A/C relay)

Off/On

A/C relay is ON: On
A/C relay is OFF: Off

A/C relay
The following PIDs
- CPP⁽¹⁾, CPP/PNP⁽¹⁾, ECT, RPM, AC_REQ, COLP

AFR (Air/fuel ratio)

Idle after warm-up: Approx. 1

A/F sensor

2AD

AFR_ACT (Actual air/fuel ratio)

Idle after warm-up: Approx. 1

A/F sensor
HO2S

ALTF (Generator field coil control duty value)

Ignition switch is turned to the ON position: 0%
Idle, E/L is operating: Duty value increases.

Generator

2AI

ALTT V (Generator output voltage)

Idle (no E/L): Approx. 14 V (This is an internal calculation value and differs from the terminal voltage)

Generator

2AJ

APP (Accelerator pedal position)

Accelerator pedal released: 0%
Accelerator pedal depressed: 100%

APP sensor
The following PIDs
- APP1, APP2

1AO, 1AP

APP1 (APP sensor No. 1)

Accelerator pedal released: Approx. 32%
Accelerator pedal depressed: Approx. 78%

APP sensor

1AO

Accelerator pedal released: Approx. 1.6 V
Accelerator pedal depressed: Approx. 3.9 V

APP2 (APP sensor No. 2)

Accelerator pedal released: Approx. 21%
Accelerator pedal depressed: Approx. 67%

APP sensor

1AP

Accelerator pedal released: Approx. 1.0 V
Accelerator pedal depressed: Approx. 3.4 V

ARPMDES (Target engine speed)

RPM

Indicates the target engine speed.

The following PIDs
- CPP⁽¹⁾, CPP/PNP⁽¹⁾, ECT, IAT, RPM, MAR MAP, VSS, AC_REQ, COLP

BARO (Barometric pressure)

Bar

psi

Ignition switch is turned to the ON position: Indicates the barometric pressure

Ignition switch is turned to the ON position (at sea level): 4.1 V

BOO (Brake switch)

Off/On

Brake pedal depressed: On
Brake pedal released: Off

Brake switch No. 1

1AB

BPA⁽⁴⁾ (Brake pressure applied switch)

Off/On

Brake pedal depressed: On
Brake pedal released: Off

Brake switch No. 2

1AF

CATT11_DSD (Catalyst temperature)

°C

°F

Ignition switch is turned to the ON position: Indicates the catalyst temperature

CHRGLP (Generator warning light)

Off/On

Idle, Generator warning light illuminate: On
Idle, Generator warning light not illuminate: Off

Generator warning light

COLP (Refrigerant pressure switch (middle))

Off/On

Refrigerant pressure is more than the specification. (Refrigerant pressure switch (middle) is on): On
Refrigerant pressure is less than the specification. (Refrigerant pressure switch (middle) is off): Off

Refrigerant pressure switch (middle)

CPP⁽¹⁾ (Clutch pedal position)

Off/On

Clutch pedal depressed: On
Clutch pedal released: Off

CPP switch

CPP/PNP⁽¹⁾ (Shift level position)

Drive/Neutral

Neutral: Neutral
Other than neutral: Drive

Neutral switch

DTCCNT (Number of DTC detected)

Number of DTCs stored

ECT (Engine coolant temperature)

°C

°F

Ignition switch is turned to the ON position: Indicates the ECT

ECT sensor

2AH

ECT is 20°C {68°F}: Approx. 3.0 V
ECT is 80°C {176°F}: Approx. 0.9 V

EQ_RAT11 (Actual lambda signal)

Idle after warm-up: Approx. 1

A/F sensor

EQ_RAT11_DSD (Target lambda)

Target lambda (Excess air factor = supplied air amount / theoretical air/fuel ratio)

A/F sensor

ETC_ACT (Throttle control)

Accelerator pedal released: Approx. 0 °
Accelerator pedal depressed: Approx. 94.5°

TP sensor

ETC_DSD (Throttle control desired)

Indicates the target throttle valve opening ratio

The following PIDs
- APR, RPM

Indicates the target throttle valve opening angle

EVAPCP (Purge solenoid valve duty value)

Ignition switch is turned to the ON position: 0%
Increase the engine speed (after warm-up): Duty value rises

The following PIDs
- ECT, IAT, RPM, MAF, O2S11, O2S12, BOO, VPWR
Purge solenoid valve

FAN1 (Cooling fan relay No. 1 control signal)

Off/On

During test mode
CTP: Off

WOT: On

Cooling fan relay No. 1
The following PIDs
- ECT, test

FAN2 (Cooling fan relay No. 2 control signal)

Off/On

During test mode
CTP: Off

WOT: On

Cooling fan relay No. 2
The following PIDs
- ECT, test

FAN3 (Cooling fan relay No. 3 control signal)

Off/On

During test mode
CTP: Off

WOT: On

Cooling fan relay No. 3
The following PIDs
- ECT, test

FLI (Fuel level)

Indicates the fuel level

FP (Fuel pump relay)

Off/On

Ignition switch is turned to the ON position and a certain period has elapsed: Off
Cranking: On
Idle: On

Fuel pump relay

FUELPW (Fuel injector duration)

sec

Idle: Approx. 2.0 ms

Fuel injector No. 1, No. 2, No. 3, No. 4
The following PIDs
- CPP⁽¹⁾, CPP/PNP⁽¹⁾, ECT, IAT, RPM, MAR O2S11, O2S12, MARVSS, BOO, AC_REQ, COLP, VPWR

2BB, 2BC, 2BD, 2AZ

FUELSYS (Fuel system status)

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

Idle after warm-up: CL

The following PIDs
- CPP⁽¹⁾, CPP/PNP⁽¹⁾, ECT, IAT, RPM, MAF, O2S11, O2S12, MARVSS, BOO, AC_REQ, COLP, VPWR

GENVDSD (Target generator voltage)

Indicates the target generated voltage

The following PIDs
- ECT, IAT, RPM, VSS, ALTT V, VPWR
Generator

HTR11 (A/F sensor heater control)

Off/On

Ignition switch is turned to the ON position: Off
Idle: On

A/F sensor heater
The following PIDs
- ECT, IAT, RPM, MAF, MAP, VPWR

2BG

HTR12 (HO2S heater control)

Off/On

Ignition switch is turned to the ON position: Off
Idle: On

HO2S heater
The following PIDs
- ECT, IAT, RPM, MAF, MAP, VPWR

2BE

IAT (Intake air temperature)

°C

°F

Ignition switch is turned to the ON position: Indicates the IAT

MAF/IAT sensor

1AT

IAT is 20°C {68°F}: Approx. 2.4 V
IAT is 60°C {140°F}: Approx. 0.9 V

IMRC⁽³⁾ (Variable tumble solenoid valve)

Off/On

ECT 63°C {145°F} or more or engine speed 3,750 RPM or more: On Others: Off

Following PIDs: ECT, RPM
Variable tumble solenoid valve

IMTV (Variable intake air control)

Off/On

Engine speed is less than 4,750 RPM: On
Engine speed is 4,750 RPM or more: Off

Variable intake air solenoid valve
The following PIDs
- RPM

INGEAR (Gears are engaged)

Off/On

When the following conditions are satisfied: On
- Other than neutral
- Clutch pedal released
Except above: Off

CPP switch
Neutral switch

1D, 1X

Driving range: On
Except above: Off

TR switch

IVS (CTP condition)

Idle/Off Idle

Idle: Idle
Other than idle: Off Idle

KNOCKR (Knocking retard)

Ignition switch is turned to the ON position: 0 °
Idle: 0°

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

Indicates EVAP control system incorrect purge flow detection value

LDP_IDL (EVAP system leak detection pump idle current)

Indicates EVAP system leak detection pump idle current

LDP_MON (EVAP system leak detection pump monitoring current)

Indicates EVAP system leak detection pump monitoring current

LDP_REF (EVAP system leak detection pump reference current)

Indicates EVAP system leak detection pump reference current

LDP_SLDV (EVAP system small leak detection value)

Indicates EVAP system small leak detection value

LDP_VSL_FV⁽²⁾ (EVAP system very small leak detection fail value)

mA/sec

Indicates EVAP system very small leak detection fail value

LDP_VSL_SV⁽²⁾ (EVAP system very small leak detection safe value)

mA/sec

Indicates EVAP system very small leak detection safe value

LDP_VSLDV⁽²⁾ (EVAP system very small teak detection value)

mA/sec

Indicates EVAP system very small leak detection value

LOAD (Engine load)

Idle after warm-up: Approx. 23%

The following PIDs
- MAP, IAT, MAF, RPM

LONGFT1 (Long term fuel trim)

Idle after warm-up: Approx. -15- +15%

The following PIDs
- CPP⁽¹⁾ CPP/PNP⁽¹⁾, ECT, IAT, RPM, MAF, O2S11, O2S12, MAP, VSS, BOO, AC_REQ, COLP, VPWR

MAF (Mass air flow)

g/sec

Ignition switch is turned to the ON position: Approx. 0 g/s
Idle: Approx. 4.0 g/s

MAF sensor

1AK

Ignition switch is turned to the ON position: Approx. 0.7 V
Idle: Approx. 1.4 V

MAP (Manifold absolute pressure)

psi

Bar

Ignition switch is turned to the ON position: Indicates the MAP

MAP sensor

2AG

Ignition switch is turned to the ON position (at sea level): 4.1 V
Idle after warm-up: Approx. 1.2 V

MIL (Malfunction indicator lamp)

Off/On

Idle, MIL illuminate: On
Idle, MIL not illuminate: Off

MIL_DIS (Travelled distance since MIL illuminated)

mile

Travelled distance since MIL illuminated

O2S11 (A/F sensor)

Idle after warm-up: Approx. 0 mA

A/F sensor

2AD

O2S12 (HO2S)

Idle after warm-up: Alternates between 0 and 1.0 V

HO2S

PSP (PSP switch)

Low/High

Steering wheel at straight ahead position: Low
While turning steering wheel: High

PSP switch

RO2FT1 (HO2S fuel trim)

Idle after warm-up: Approx. 0

The following PIDs
- O2S12

RPM (Engine speed)

RPM

When the engine is running: Indicates the engine speed

CKP sensor

SCCS⁽⁴⁾ (Cruise control switch)

ON OFF switch pressed in: Approx. 0 V
CANCEL switch pressed in: Approx. 1.1 V
SET/- switch pressed in: Approx. 3.1 V
RES/+ switch pressed in: Approx. 4.2 V
Except above: Approx. 5.0 V

Cruise control switch

1AQ

SEGRP (EGR control)

Ignition switch is turned to the ON position: 0 Step
Idle: 0 Step
Engine speed is 1,200-4,200 RPM: 0-52 Step

EGR valve

2K, 2G, 2L, 2H

SEGRP DSD (EGR valve position desired)

Ignition switch is turned to the ON position: 0%
Idle: 0%
Engine speed is 1,200-4,200 RPM: 0-100%

The following PIDs
- MAF, ECT, RPM, VSS

SHRTFT1 (Short term fuel trim)

Idle after warm-up: -25 - 25%

The following PIDs
- CPP⁽¹⁾, CPP/PNP⁽¹⁾, ECT, IAT, RPM, MAF, O2S11, O2S12, MAP, VSS, BOO, AC_REQ, COLP, VPWR

SPARKADV (Ignition timing)

Indicates the ignition timing

CMP sensor
The following PIDs
- CPP⁽¹⁾, CPP/PNP⁽¹⁾, ECT, IAT, RPM, MAF, KNOCKR, BOO, AC_REQ, COLP

test (Test mode)

Off/On

Test mode On: On
Test mode Off: Off

TH_M

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

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

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

TIRE SIZE (Tire revolution per mile)

rev/mile

Indicates the tire revolution per a mile

TP REL (Throttle position signal (relative value))

Accelerator pedal released: Approx. 10%
Accelerator pedal depressed: Approx. 81%

The following PIDs
- TP1, TP2

TP1 (TP sensor No. 1)

Accelerator pedal released: Approx. 10%
Accelerator pedal depressed: Approx. 90%

TP sensor

2AK

Accelerator pedal released: Approx. 0.5 V
Accelerator pedal depressed: Approx. 4.5 V

TP2 (TP sensor No. 2)

Accelerator pedal released: Approx. 10%
Accelerator pedal depressed: Approx. 90%

TP sensor

2AL

Accelerator pedal released: Approx. 4.5 V
Accelerator pedal depressed: 0.5 V

TPCT (TP sensor voltage at CTP)

Ignition switch is turned to the ON position: Approx. 0.5 V

The following PIDs
- TP1, TP2

VPWR (Battery positive voltage)

Indicates the battery voltage

Battery

1BA

VSS (Vehicle speed)

KPH

mph

Vehicle running: Indicates the vehicle speed

CAN related module

VT ACT1 (Actual valve timing)

Idle: Approx. 0°
Racing: 0-25 °

The following PIDs
- ECT, RPM, MAF
CMP sensor

VT DIFF1 (Difference between target valve timing and actual valve timing)

Idle: 0°

The following PIDs
- ECT, RPM, MAF
OCV

VT DUTY1 (OCV control)

Idle: Approx. 10%

OCV
The following PIDs
- ECT, RPM, MAF

VTC⁽³⁾ (Variable tumble shutter valve control)

Off/On

Indicates the condition of the variable tumble shutter valve switch

Following PIDs: IMRC
Variable tumble shutter valve switch

2AE

⁽¹⁾

⁽²⁾	California emission regulation applicable model

⁽³⁾

⁽⁴⁾	With cruise control system