Using M-MDS

NOTE:

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

CMP sensor
Main relay

Connect the M-MDS to the DLC-2.
Switch the ignition to ON.
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, IMRC, IMTV, INJ_1 4, SEGRP, Test, VT Duty1 wt

Fig 1: DLC-2

Courtesy of MAZDA MOTORS CORP.

PID/DATA MONITOR CHART (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.

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

ALTF (Generator field coil control duty value)

Just after A/C switch ON and fan switch ON at idle (after warm up): Duty value rises

Generator
Inspect following PIDs: IAT, ECT, RPM, VPWR, ALTTV.

2AA

ALTTV
(Generator output voltage)

Switch the ignition to ON: 0
V Idle (after warm up): approx. 14 V⁽¹⁾ (E/L not operating)

Generator

2AF

APP
(APP sensor)

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

APP sensor

1AO
1AP

APP1
(APP sensor No. 1)

Accelerator pedal released: approx. 15%
Accelerator pedal depressed: approx. 80 %

APP sensor No. 1

1AO

Accelerator pedal released: approx. 0.8 V
Accelerator pedal depressed: approx. 4.0 V

APP2
(APP sensor No. 2)

Accelerator pedal released: approx. 7.5 %
Accelerator pedal depressed: approx. 42 %

APP sensor No. 2

1AP

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, MAR ECT, MAF, TP REL, INGEAR, ALTTV.

BARO (Barometric pressure)

kPa, psi, Bar

Indicate the BARO

BARO sensor

Switch the ignition to ON (at sea level): approx. 4.1 V

BOO
(Brake switch (No. 1 signal))

OFF/ON

Brake pedal depressed: ON Brake pedal released: OFF

Brake switch (No. 1 signal)

1AB

BPA (Brake switch (No. 2 signal))

OFF/ON

Brake pedal depressed: ON Brake pedal released: OFF

Brake switch (No. 2 signal)

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 (after warm up): 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

CPP⁽²⁾
(Clutch pedal position)

OFF/ON

Clutch pedal depressed: ON Clutch pedal released: OFF

CPP switch

1BD

CPP/PNP⁽¹⁾(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

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 (after warm up): 0%

Inspect following PIDs: IAT, RPM, ECT, MAF, O2S1 UNGEAR, VPWR.

EVAPCV
(Evaporative emission canister vent valve)

OFF/ON

Simulation item (EVAPCV) is ON: ON

CV solenoid valve

FAN_DUTY
(Fan control module)

When all of following condition are met: 50%

Test mode ON
WOT

Fan control module

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 (after warm up): 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

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.

HTR12
(HO2S heater)

OFF/ON

Idle (after warm up): ON↓OFF

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

IAT
(Intake air temperature)

°C

°F

Indicate the IAT

IAT sensor

1AT

IAT 20 °C {68 °F}: approx. 2.38 V
IAT 60 °C {140 °F}: approx. 0.89 V

IMRC
(Variable tumble solenoid value)

OFF/ON

ECT below 60 °{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.

IMRC_POS
(Variable tumble shutter valve position sensor)

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 position sensor

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.

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 (after warm up): 0°

2U
2V

LOAD (Engine load)

Switch the ignition to ON: 0%
Idle (after warm up): approx. 15%

MAF sensor

FAN_DUTY
(Fan control module)

Idle (after warm up): -15-20%

Perform applicable DTC troubleshooting.

MAF
(Mass airflow)

g/sec

Indicate the MAF

MAF sensor

1AK

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

Switch the ignition to ON (at sea level): approx. 4.1 V
Idle (after warm up): 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)

miles

Indicate the travelled distance since the MIL illuminated

O2S11 (A/F sensor)

Idle (After warm up): approx. 0 mA

A/F sensor

2Z
2AC
2AD

O2S12 (HO2S)

Idle (After warm up): 0-1.0 V

HO2S

PSP (PSP switch)

OFF/ON

Steering wheel in straight ahead position: OFF
Wheel turning steering wheel: ON

PSP switch

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

SC_CANCEL⁽³⁾ (CANCEL switch)

Inactive/Active

CANCEL switch pressed in: Active Except above: Inactive

Cruise control switch

1AQ

SC_OFF⁽³⁾ (ON/OFF switch)

Inactive/Active

ON/OFF switch pressed in (OFF): Active
Except above: Inactive

Cruise control switch

1AQ

SC_ON⁽³⁾ (ON/OFF switch)

Inactive/Active

ON/OFF switch pressed in (ON): Active
Except abvoe: Inactive

Cruise control switch

1AQ

SC_RES⁽³⁾ (RESUME switch)

Inactive/Active

RESUME switch pressed in: Except above: Inactive

Cruise control switch

1AQ

SC_SET⁽³⁾ (SET(-) switch)

Inactive/Active

SET(-) switch pressed in: Active
Except above: Inactive

Cruise control switch

1AQ

SC_SET+⁽³⁾(SET(+) switch)

Inactive/Active

SET(+) switch pressed in: Active Except above: Inactive

Cruise control switch

1AQ

SCCS⁽³⁾ (Speed control command switch)

ON/OFF switch pressed in (OFF): approx. 0 V
CANSEL switch pressed in: approx. 1.3V
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. 4.3 V

Cruise control switch

1AQ

SEGRP
(EGR valve (stepping motor) position)

Switch the ignition to ON: 0 Idle (after warm up): 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

TP REL (Relative throttle position)

Accelerator pedal released: approx. 3%
Accelerator pedal depressed: approx. 75%

TP sensor

TP 1
(TP sensor No. 1)

Accelerator pedal released: approx. 12%
Accelerator pedal depressed: approx. 84%

TP sensor No. 1

2AK

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 No. 2

2AL

Accelerator pedal released: approx. 4.4 V
Accelerator pedal depressed: approx. 0.8 V

TPCT (TP sensor voltage at CTP)

approx. 0.5 V

TP sensor

2AK 2AL

VPWR (Battery positive voltage)

Switch the ignition to ON: B+

Battery

VSS (Vehicle speed)

KPH

Indicate the vehicle speed

Perform applicable DTC troubleshooting.

VT ACT1 (Actual valve timing)

Idle (after warm up): approx, 0° Racing after warm up: 0-25°

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

VT DIFF 1 (Difference between target and actual valve timing)

idle (after warm up): approx. 0°

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

VT DUTY1 (Oil control valve duty value)

Idle (after warm up): approx. 11.5%

OCV Inspect following PIDs: TP REL, ECT RPM.

⁽¹⁾	Calculated value; differs from terminal voltage

⁽²⁾

MTX

⁽³⁾	Vehicles equipped with cruise control switch

Following PIDs are for the ATX models. if inspects for following PIDs, (See ON-BOARD DIAGNOSTIC SYSTEM PID/DATA MONITOR INSPECTION [FS5A-EL] .)