ON-BOARD DIAGNOSTIC TEST [MZI-3.7]

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DTC Reading Procedure

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “Self Test”.
    2. Select “Modules”.
    3. Select “PCM”.

  • When using the PDS (Pocket PC)
    1. Select “Module Tests”.
    2. Select “PCM”.
    3. Select “Self Test”.

3. Then, select the “Retrieve CMDTCs” and perform procedures according to directions on the M-MDS screen.

4. Verify the DTC according to the directions on the M-MDS screen.

  • If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

5. After completion of repairs, clear all DTCs stored in the PCM, while referring to “AFTER REPAIR PROCEDURE“.

Pending Trouble Code Access Procedure

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “Self Test”.
    2. Select “Modules”.
    3. Select “PCM”.

  • When using the PDS (Pocket PC)
    1. Select “Module Tests”.
    2. Select “PCM”.
    3. Select “Self Test”.

3. Then, select the “Retrieve CMDTCs” and perform procedures according to directions on the M-MDS screen.

4. Retrieve the pending trouble codes according to the directions on the M-MDS screen.

Freeze Frame PID Data Access Procedure

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “Self Test”.
    2. Select “Modules”.
    3. Select “PCM”.

  • When using the PDS (Pocket PC)
    1. Select “Module Tests”.
    2. Select “PCM”.
    3. Select “Self Test”.

3. Then, select the “Retrieve CMDTCs” and perform procedures according to directions on the M-MDS screen.

4. Retrieve the freeze frame PID data according to the directions on the M-MDS screen.

On-Board System Readiness Tests Access Procedure

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “Powertrain”.
    2. Select “OBD Test Modes”.
    3. Select “Mode 1 Powertrain Data”.
    4. Select “PCM”.

  • When using the PDS (Pocket PC)
    1. Select “OBDII Modes”.
    2. Select “Mode 1 Powertrain Data”.
    3. Select “PCM”.

3. Then, select the “***SUP” and “**EVAL” PIDs in the PID selection screen.

4. Monitor those PIDs and check it system monitor is completed.

  Note
  • If the on-board system readiness tests are not completed the PCM stores DTC P1000.

PID/DATA Monitor and Record Procedure

  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.

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “DataLogger”.
    2. Select “Modules”.
    3. Select “PCM”.

  • When using the PDS (Pocket PC)
    1. Select “Module Tests”.
    2. Select “PCM”.
    3. Select “DataLogger”.

3. Select the PID from the PID table.

4. Verify the test results according to detections on the screen.

PID/Data Monitor Table

The Mazda Modular Diagnostic System (M-MDS)

PID Name | Description | Unit
--- | --- | ---
AAT | Ambient air temperature | °C | °F
AC_PRES | Refrigerant pressure sensor | V
kPa | psi | Bar
AC_REQ | A/C request signal | Off/On
ACCS | A/C relay | Off/On
ALTF | Generator field coil control duty value | %
APP | Accelerator pedal position | %
APP1 | APP sensor No.1 | %
V
APP2 | APP sensor No.2 | %
V
ARPMDES | Target engine speed | RPM
AXLE | Axle ratio | —
BARO | Barometric pressure | kPa | psi | Bar
BOO | Brake switch | Off/On
BPA | Brake pressure applied switch | Off/On
CATT11_DSD | Estimated catalytic converter temperature (RH) | °C | °F
CATT21_DSD | Estimated catalytic converter temperature (LH) | °C | °F
CHRGLP | Generator warning light | Off/On
CHT | CHT sensor | °C | °F
V
ECT | Engine coolant temperature | °C | °F
EQ_RAT11 | Equivalence ratio (lambda) A/F sensor (RH) | —
EQ_RAT11_DSD | Desired equivalence ratio (lambda) | —
EQ_RAT12 | Equivalence ratio (lambda) HO2S (RH) | —
ETC_ACT | Electronic throttle control actual | °
ETC_DSD | Electronic throttle control desired | %
°
EVAPCP | Purge solenoid valve duty value | %
EVAPCV | CV solenoid valve | Off/On
FAN_DUTY | Cooling fan control | %
FCL | Fuel cap warning light | Off/On
FLI | Fuel level | %
FP | Fuel pump relay | Off/On
FPM | Fuel pump monitor | Off/On
FTP | Fuel tank pressure sensor | V
FUELSYS | Fuel system loop status (RH) | OL/CL/OL-Drive/OL-Fault/CL-Fault
GENVDSD | Generator voltage desired | V
HTR11 | A/F sensor heater (RH) | Off/On
%
HTR12 | HO2S heater (RH) | Off/On
%
HTR21 | A/F sensor heater (LH) | Off/On
HTR22 | HO2S heater (LH) | Off/On
IAT | IAT sensor | °C | °F
V
INGEAR | Load/no load condition | Off/On
INJ_PWR | Injector power monitor | V
IVS | CTP condition | Off Idle/Idle
KNOCKR | Knocking retard | °
LOAD | Engine load | %
LONGFT1 | Long term fuel trim (RH) | %
LONGFT2 | Long term fuel trim (LH) | %
MAF | MAF sensor | g/s
V
MIL_DIS | Travelled distance since the MIL illuminated | km
O2S11 | A/F sensor (RH) | V
O2S12 | HO2S (RH) | V
O2S21 | A/F sensor (LH) | V
O2S22 | HO2S (LH) | V
PSP | PSP switch | Low/High
RO2FT1 | HO2S fuel trim (RH) | —
RO2FT2 | HO2S fuel trim (LH) | —
RPM | Engine speed | RPM
SC_CANCEL | Speed control cancel switch | Inactive/Active
SC_OFF | Cruise control OFF switch | Inactive/Active
SC_ON | Cruise control ON switch | Inactive/Active
SC_RES | Cruise resume switch | Inactive/Active
SC_SET- | Cruise coast switch | Inactive/Active
SC_SET+ | Cruise set/acceleration switch | Inactive/Active
SCCS | Speed control command switch | V
SHRTFT1 | Short term fuel trim (RH) | %
SHRTFT12 | Short term fuel trim (HO2S) (RH) | %
SHRTFT2 | Short term fuel trim (LH) | %
SHRTFT22 | Short term fuel trim (HO2S) (LH) | %
SPARKADV | Ignition timing | °
TIRESIZE | Tire revolution per mile | —
TP REL | Relative throttle position | %
TP1 | TP sensor No.1 | %
V
TP2 | TP sensor No.2 | %
V
VPWR | Battery voltage | V
VSS | Vehicle speed | KPH
VT ACT1 | Actual valve timing (RH) | °
VT ACT2 | Actual valve timing (LH) | °
VT DIFF1 | Difference between target and actual valve timing (RH) | °
VT DIFF2 | Difference between target and actual valve timing (LH) | °
VT DUTY1 | Oil control valve duty value (RH) | %
VT DUTY2 | Oil control valve duty value (LH) | %
VT_DSD | Desired intake camshaft position | °

Diagnostic Monitoring Test Results Access Procedure

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “Powertrain”.
    2. Select “OBD Test Modes”.
    3. Select “Mode 6 On-Board Test Results”.

  • When using the PDS (Pocket PC)
    1. Select “OBDII Modes”.
    2. Select “Mode 6 On-Board Test Results”.

3. Verify the PID data according to the directions on the screen.

Active Command Modes Procedure

1. Connect the M-MDS to the DLC-2.

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2. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

  • When using the IDS (laptop PC)
    1. Select “DataLogger”.
    2. Select “Modules”.
    3. Select “PCM”.

  • When using the PDS (Pocket PC)
    1. Select “Module Tests”.
    2. Select “PCM”.
    3. Select “DataLogger”.

3. Select the simulation items from the PID table.

4. Perform the simulation function, inspect the operations for each parts.

  • If there is no operation sound from the relay, motor, and solenoid after the simulation function inspection is performed, it is possible that there is an open or short circuit in the wiring harness, relay, motor or solenoid, or sticking and operation malfunction.