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Home >> Mazda >> 2011 >> RX-8 R3, 1.3 2 >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Pcm Inspection >> Using The M-MDS

Using The M-MDS

NOTE:
  • PIDs for the following parts are not available on this model. Go to the appropriate part inspection Service Information.
  • Main relay (Refer to the RELAY INSPECTION in the appropriate Power Systems article .)
  1. Connect the M-MDS to the DLC-2.
  2. Turn the ignition switch to ON position.
  3. Measure the PID value.
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.
Fig 1: Identifying DLC-2 Connector
G05981119Courtesy of MAZDA MOTORS CORP.
CAUTION:
  • To prevent engine damage, use MOP_FL_C and MOP_FL_S only during idling (after engine warm-up) up to 30 s.

PID/DATA monitor table (reference) 

PID/DATA MONITOR REFERENCE CHART

Monitor item (Definition) Unit/Condition Condition/Specification (Reference) Inspection item(s) PCM terminal
ACCS (A/C relay) Off/On Idling 
  • A/C operating: On
  • A/C not operating: Off
  • The following PIDs
    • AC_REQ, ECT, IVS, PCM_T, RPM, TP, VSS
  • A/C relay
 1I
AC_REQ (A/C switch) Off/On
  • A/C switch OFF: Off
  • A/C switch ON: On
  • Refrigerant pressure switch (high, low)
  • A/C switch
 1AU
AIP RLY (AIR pump relay) Off/On
  • During the specified period after cold: On
  • Idling after warm-up: Off
  • The following PIDs
    • CATT11_DSD, ECT, IAT
  • AIR pump relay
 1G
ALTF (Generator field coil control duty value) %
  • IG SW ON: 0%
  • Just after A/C switch ON and fan switch ON at idling: Duty value rises
  • The following PIDs
    • ALTT V, VPWR, ECT, IAT, IVS, PCM_T, RPM, VPWR, VSS
  • Generator
 2AI
ALTT V (Generator output voltage) V
  • IG SW ON: 0V
  • Idling: Approx. 14.9 V*1 (E/L not operating)
 Generator 2AJ
APP (APP) %
  • Accelerator pedal released: 0%
  • Accelerator pedal depressed: 100%
  • The following PIDs
    • APP1, APP2
  • APP sensor No. 1, No. 2
 1AO 1AP
APP1 (APP1) %
  • Accelerator pedal released: 31.1-33.1%
  • Accelerator pedal depressed: 75.6-78.6%
 APP sensor No. 1 1AO
V
  • Accelerator pedal released: 1.555-1.655 V
  • Accelerator pedal depressed: 3.78-3.93 V
APP2 (APP 2) %
  • Accelerator pedal released: 20.1-22.1%
  • Accelerator pedal depressed: 64.6-67.6%
 APP sensor No. 2 1AP
V
  • Accelerator pedal released: 1.005-1.105 V
  • Accelerator pedal depressed: 3.23-3.38 V
APV (APV motor) Open/Closed
  • High engine speed after warm-up: Open
  • Except above: Closed
  • The following PIDs
    • APV POS, BARO, ECT, IAT, MAF, RPM, TP
  • APV motor
 2D 2F
APV_2 (APV motor) Open/Closed
  • High engine speed after warm-up: Open
  • Except above: Closed
  • The following PIDs
    • APV POS, BARO, ECT, IAT, MAF, RPM, TP
  • APV motor
 2D 2F
APV_POS (APV position sensor) V
  • High engine speed after warm-up: Approx. 5.0 V
  • Except above: Approx. 0.35 V
  • APV position sensor No. 1
 2AN
APV_POS_2 (APV position sensor) V
  • High engine speed after warm-up: Approx. 5.0 V
  • Except above: Approx. 0.35 V
  • APV position sensor No. 2
 2AF
ARPMDES (Target engine speed) RPM
  • Indicate the target engine speed
  • The following PIDs

  • ACCS, ALTT V, VPWR, COLP, ECT, IAT, MAF, RPM, TP, VPWR
 -
BARO (Barometric pressure) kPa, Bar, psi
  • IG SW ON: Indicate the atmospheric pressure
  • BARO sensor
 -
V
  • IG SW ON: 2.44-3.80 V
BOO (Brake switch) Off/On
  • Brake pedal depressed: On
  • Brake pedal released: Off
  • Brake switch
 -
CATT11_DSD (Estimated catalytic converter temperature) °C °F
  • Indicate the estimated catalytic converter temperature
  • The following PIDs

  • ECT, IAT, LOAD, RPM
 -
CHRGLP (Generator warning light) Off/On
  • Generator warning light illuminate: On
  • Generator warning light not illuminate: Off
  • Generator warning light
 -
COLP (Refrigerant pressure switch (middle)) OFF/ON
  • Refrigerant pressure switch (middle) ON*2 : ON
  • Refrigerant pressure switch (middle) OFF*3 : OFF
  • Refrigerant pressure switch (middle)
 1J
CPP*4 (Clutch pedal position) Off/On
  • Clutch pedal depressed: On
  • Clutch pedal released: Off
  • CPP switch
 1D
CPP/PNP*4 (Shift lever position) Drive/Neutral
  • Neutral position: Neutral
  • Except above: Drive
  • Neutral switch
 2AS
DEI*6 (VDI solenoid valve) Off/On
  • Idling: Off
  • High engine speed after warm-up: On
  • The following PID
    • RPM
  • VDI solenoid valve
 2L
DTC CNT (Number of DTC detected) - - - -
ECT (Engine coolant temperature) °C °F
  • IG SW ON: Indicate the ECT
  • ECT sensor
 2AH
V
  • ECT 20 °C {68 °F}: approx. 3.1 V
  • ECT 80 °C {176 °F}: approx. 0.9 V
EQ_RAT11 (A/F sensor) -
  • Idling after warm-up: Approx. 1
  • A/F sensor
 -
EQ_RAT11_DSD (Target lambda) -
  • Indicate the target lambda
  • A/F sensor
 -
ETC_ACT (Electronic throttle control actual) °
  • CTP: 6.3° or less
  • WOT: Approx. 83°
  • Throttle valve actuator
 2A 2B
ETC_DSD (Electronic throttle control desired) °
  • CTP: 6.3° or less
  • WOT: Approx. 83°
  • The following PIDs

  • APR, TP1, TP2
 -
%
  • CTP: 7% or less
  • WOT: Approx. 100%
EVAPCP (Purge solenoid valve duty value) %
  • IG SW ON: 0%
  • Increase the engine speed: Duty value rises
  • The following PIDs
    • BARO, ECT, FUEL SYS, IAT, LOAD, MAF, RPM
  • Purge solenoid valve
 2C
FAN1 (Cooling fan control) Off/On
  • The cooling fan is operating at low speed: On
  • Except above: Off
  • The following PIDs
    • AC REQ, COLP, ECT, IAT, PCM_T
  • Cooling fan relay No. 1
 1M
FAN2 (Cooling fan control) Off/On
  • The cooling fan is operating at middle speed: On
  • Except above: Off
  • The following PIDs
    • AC REQ, COLP, ECT, IAT, PCM_T
  • Cooling fan relay No. 2, No. 3
 1N
FAN3 (Cooling fan control) Off/On
  • The cooling fan is operating at high speed: On
  • Except above: Off
  • The following PIDs
    • AC REQ, COLP, ECT, IAT, PCM_T
  • Cooling fan relay No. 4, No. 5
 1R
FLI (Fuel level) %
  • Fuel gauge level F: Approx. 100%
  • Fuel gauge level E: Approx. 0%
  • Fuel tank gauge unit
 -
FP (Fuel pump relay) Off/On
  • IG SW ON: Off
  • Cranking: On
  • Idling: On
  • The following PID
    • RPM
  • Fuel pump relay
 1H
FPRR (Fuel pump speed control relay) Off/On
  • IG SW ON: Off
  • Cranking: On
  • Idling: Off
  • The following PIDs
    • VPWR, BARO, ECT, IAT, MAF, O2S11, O2S12, RPM, TP, VPWR
  • Fuel pump speed control relay
 1K
FUELPW (Fuel injector duration) sec
  • Idling after warm-up: Approx. 2.7 ms
  • The following PIDs
    • AC REQ, APR VPWR, BARO, ECT, IAT, KNOCKR, MAF, O2S11, O2S12, RPM, TP, VPWR, VSS
  • Fuel injector (FR RR FS, RS)
 2AZ 2BB 2BC 2BD
FUELSYS (Fuel system status) OL/CL/OL-Drive/OL-Fault/CL-Fault
  • Idling after warm-up: CL
  • The following PIDs

  • AC REQ, APR VPWR, BARO, ECT, IAT, KNOCKR, MAF, O2S11, O2S12, RPM, TP, VPWR, VSS
 -
GENVDSD (Generator voltage desired) V
  • Idling: Approx. 14.9 V*1 (E/L not operating)
  • The following PIDs

  • AC REQ, ALTT V, VPWR, BOO, ECT, IAT, PCM T, RPM, VPWR, VSS
 -
HTR11 (A/F sensor heater) Off/On
  • IG SW ON: Off
  • Idling after warm-up: On
  • The following PIDs
    • VPWR, ECT, IAT, LOAD, MAF, VPWR
  • A/F sensor heater
 2BG
HTR12 (HO2S heater) Off/On
  • IG SW ON: Off
  • Idling after warm-up: On
  • The following PIDs
    • VPWR, ECT, IAT, LOAD, MAF, VPWR
  • HO2S heater
 2BE
IAC (Idle air control) %
  • IG SW ON: Approx. 26%
  • Idling after warm-up: Approx. 21%
  • The following PIDs
    • AC_REQ, ALTT V, APP, ARPMDES, COLP, ECT, EVAPCP, RPM, VSS
  • Throttle valve actuator
 2A 2B
IASV (VFAD solenoid valve) Off/On
  • Idling: Off
  • High engine speed: On
  • The following PID
    • RPM
  • VFAD solenoid valve
 1AE
IAT (Intake air temperature) °C °F
  • IG SW ON: Indicate the IAT
  • IAT sensor
 1AT
V
  • IAT 20 °C {68 °F}: Approx. 2.4 V
  • IAT 40 °C {104 °F}: Approx. 1.5 V
INGEAR (In gear) Off/On MT 
  • When the following conditions are satisfied: On
    • IG SW ON
    • Not neutral
    • Clutch pedal released
  • Except above: Off

AT 
  • When the following conditions are satisfied: On
    • Engine runs
    • Driving range
  • Except above: Off
  • The following PIDs

  • CPP, CPP/PNP, RPM
 -
IVS (CTP condition) Idle/Off Idle
  • Idling: Idle
  • Except above: Off idle
  • The following PID

  • APP
 -
KNOCKR (Knocking retard) °
  • IG SW ON: 0°
  • Idling: 0°
  • KS No. 1, No. 2
 2U 2V 2Y 2AC
LDP_EVAPCP (EVAP Control system incorrect purge flow detection value) A
  • Indicates EVAP Control system incorrect purge flow detection value
  • EVAP leak detection pump
 1U 1V
LDF_IDL (EVAP System leak detection pump idle current) A
  • Indicates EVAP System leak detection pump idle current
  • EVAP leak detection pump
 1U 1V
LDP_MON (EVAP System leak detection pump monitoring current) A
  • Indicates EVAP System leak detection pump monitoring current
  • EVAP leak detection pump
 1U 1V
LDP_REF (EVAP System leak detection pump reference current) A
  • Indicates EVAP System leak detection pump reference current
  • EVAP leak detection pump
 1U 1V
LDP_SLDV (EVAP Control system small leak detection value) A
  • Indicates EVAP Control system small leak detection value
  • EVAP leak detection pump
 1U 1V
LDP_VSLDV*5 (EVAP Control system very small leak detection value) mA/sec
  • Indicates EVAP Control system very small leak detection value
  • EVAP leak detection pump
 1U 1V
LOAD (Engine load) % MT 
  • Idling: 28.2-39.2%
  • Engine speed 2, 500 RPM (no load): 16.2-23.4%

AT 
  • Idling: 26.6-39.2%
  • Engine speed 2, 500 RPM (no load): 17.1-24.3%
  • The following PIDs

  • BARO, IAT, MAF, RPM
 -
LONGFT1 (long term fuel trim) %
  • Idling after warm-up: approx.-12.5-12.5%
  • The following PIDs

  • ECT, LOAD, MAF, RPM, SHRTFT1
 -
MAF (Mass airflow) g/sec
  • Indicate the MAF
  • MAF sensor
 1AK
V
  • Idling after warm-up: Approx. 1.2 V
  • Engine speed 2, 500 RPM (no load): Approx. 1.5 V
MIL (Malfunction indicator lamp) Off/On
  • Malfunction indicator lamp illuminate: On
  • Malfunction indicator lamp not illuminate: Off
  • Instrument cluster
 -
MIL_DIS (Travelled distance since the MIL illuminated) Km
  • Indicates travelled distance since the MIL illuminated
 - -
MOP_DRV_C (Electromagnetic metering oil pump center driving signal) Off/On
  • IG SW ON: Off
  • Cranking: On
  • Idling: Off
  • Metering oil pump No. 1
 1E
MOP_DRV_S (Electromagnetic metering oil pump side driving signal) Off/On
  • IG SW ON: Off
  • Cranking: On
  • Idling: Off
  • Metering oil pump No. 2
 1F
MOP_FL_C (Electromagnetic metering oil pump center request flow volume) cc/h
  • IG SW ON: 0 cc/h
  • Cranking: Approx. 5 cc/h
  • Idling: Approx. 1 cc/h
  • Metering oil pump driver
 1S
MOP_FL_S (Electromagnetic metering oil pump side request flow volume) cc/h
  • IG SW ON: 0 cc/h
  • Cranking: Approx. 3 cc/h
  • Idling: Approx. 0 cc/h
  • Metering oil pump driver
 1AA
MOP_P_ACT (Electromagnetic metering oil pump system pressure actual) Pa
  • Idling: 70 KPa
  • Oil pressure sensor
 2R
MOP_P_DSD (Electromagnetic metering oil pump system pressure desired) Pa
  • Indicate the target oil pressure
  • Oil pressure sensor
 -
O2S11 (A/F sensor) A
  • Idling after warm-up: Approx. 0 mA
  • A/F sensor
 2AD
O2S12 (HO2S) V
  • Idling after warm-up: 0-1.0 V
  • HO2S
 2Q
OCV_ACT (OCV current actual) A
  • IG SW ON: Approx. 300 mA
  • Idling: Approx. 450 mA
  • OCV
 2E
OCV_CLEAN (OCV cleaning mode) Off/On
  • OCV cleaning mode operating: On
  • Except above: Off
  • OCV
 2E
OCV_DSD (OCV current desired) A
  • Indicate the target OCV current
  • The following PID

  • MOP_P_DSD
 -
PACNTV (AIR solenoid valve control) Off/On
  • AIR pump operating: On
  • AIR pump not operating: Off
  • The following PIDs
    • CATT11_DSD, ECT, IAT
  • AIR solenoid valve
 2G
PCM_T (PCM temperature sensor) V
  • IG SW ON: 1.2-2.6 V
  • PCM temperature sensor
 -
RO2FT1 (HO2S fuel trim) -
  • Idling after warm-up: approx. 0
  • The following PID

  • O2S12
 -
RPM (Engine speed) RPM
  • Engine runs: Indicate the engine speed
  • Eccentric shaft position sensor
 2AG
SC_SET (Cruise main indicator light/cruise set indicator light) Off/On
  • Cruise main indicator light/cruise set indicator light illuminate: On
  • Cruise main indicator light/cruise set indicator light not illuminate: Off
  • Instrument cluster
 -
SCCS (Cruise control switch) V
  • 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
SHRTFT1 (Short term fuel trim (front)) %
  • Idling after warm-up: approx.-4-4%
  • The following PIDs

  • AC_REQ, APP, VPWR, BARO, ECT, IAT, KNOCKR, LOAD, MAF, O2S11, O2S12, RPM, TP, VPWR, VSS
 -
SHRTFT12 (Short term fuel trim (rear)) %
  • Idling after warm-up: approx. 0%
  • The following PIDs

  • AC_REQ, APP, VPWR, BARO, ECT, IAT, KNOCKR, LOAD, MAF, O2S11, O2S12, RPM, TP, VPWR, VSS
 -
SPARK-L (Ignition timing) °(BTDC)
  • Idling after warm-up: BTDC approx. -5°
  • The following PIDs
    • AC_REQ, APP, ECT, IAT, IVS, KNOCKR, LOAD, MAF, RPM, TP, VSS
  • Ignition coil (L/F, L/R)
 2AT 2AX
SPARK-T (Ignition timing) °(BTDC)
  • Idling after warm-up: BTDC approx. 10°
  • The following PIDs
    • AC_REQ, APP, ECT, IAT, IVS, KNOCKR, LOAD, MAF, RPM, TP, VSS
  • Ignition coil (T/F, T/R)
 2AW 2BA
SSV (SSV solenoid valve) Off/On
  • High engine speed after warm-up: On
  • Idling: Off
  • The following PIDs
    • BARO, ECT, IAT, MAF, RPM, TP
  • SSV solenoid valve
 21
test Off/On
  • Test mode: On
  • Except above: Off
 - -
TH_M (Thermostat monitor engine coolant temperature) °C °F
  • Indicates engine coolant temperature when thermostat monitoring is finished
  • Thermostat
 -
TH_M_MAX (Thermostat monitor engine coolant temperature max limit) °C °F
  • Indicates upper limit of engine coolant temperature for thermostat monitoring execution
  • Thermostat
 -
TH_M_MIN (Thermostat monitor engine coolant temperature min limit) °C °F
  • Indicates lower limit of engine coolant temperature for thermostat monitoring execution
  • Thermostat
 -
TIRESIZE (Tire revolution per mile) rev/mile
  • Indicates tire revolution per a mile
TP (TP) V
  • CTP: Approx. 0.8 V
  • WOT: Approx. 3.92 V
  • The following PIDs

  • TP1, TP2
 -
TP_REL (Relative TP) %
  • CTP: Approx. 7%
  • WOT: Approx. 100%
  • The following PIDs

  • TP, TP1, TP2
 2AK 2AL
TP1 (TP 1) %
  • CTP: 8.0-16.0%
  • WOT: 76.5-81.9%
  • TP sensor No. 1
 2AK
V
  • CTP: 0.4-0.8 V
  • WOT: 3.825-4.095 V
TP2 (TP 2) %
  • CTP: 23.6-35.6%
  • WOT: 80.66-86.06%
  • TP sensor No. 2
 2AL
V
  • CTP: 1.18-1.78 V
  • WOT: 4.033-4.303 V
TPCT (TP sensor voltage at CTP) V
  • IG SW ON (CTP): Approx. 0.6 V
  • TP sensor
 -
VPWR (Battery voltage) V
  • Indicate the battery voltage
  • Battery
 1BA
VSS (Vehicle speed) KPH MPH
  • Vehicle running: Indicate the vehicle speed
  • ABS HU/CM
  • DSC HU/CM
 -
*1 : Calculated value; differs from terminal voltage
*2 : Refrigerant pressure switch (middle) turns off when the refrigerant pressure is 1.11 MPa {11.3 kgf/cm2 , 161 psi} or less
*3 : Refrigerant pressure switch (middle) turns on when the refrigerant pressure is 1.60 MPa {16.3 kgf/cm2 , 232 psi} or more
*4 :MT
*5 : California emission regulation applicable model
*6 : 13B-MSP(high power)
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