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ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)]

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2016 – MX-5 – Engine

ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)]

DTC Reading Procedure

1. Connect the M-MDS to the DLC–2.

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

a. Select “Self Test”.

b. Select “Modules”.

c. Select “PCM”.

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.

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

a. Select “Self Test”.

b. Select “Modules”.

c. Select “PCM”.

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.

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

a. Select “Self Test”.

b. Select “Modules”.

c. Select “PCM”.

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.

NOTE:

  • Freeze frame data/snapshot data appears at the top of the help screen when the displayed DTC is selected.

    Freeze frame data

  • The freeze frame data consists of data for vehicle and engine control system operation conditions when malfunctions in the engine control system are detected and stored in the PCM.

  • Freeze frame data is stored at the instant the check engine light illuminates, and only a part of the DTC data is stored.

  • For the freeze frame data, if there are several malfunctions in the engine control system, the data for the malfunction which occurred initially is stored. Thereafter, if a misfire or fuel injection control malfunction occurs, data from the misfire or fuel injection control malfunction is written over the initially stored data. However, if the initially stored freeze frame data is a misfire or fuel injection control malfunction, it is not overwritten.

    Snapshot data

  • The snapshot data stores the currently detected DTC data.

  • The recording timing for the freeze frame data/snapshot data differs depending on the number of DTC drive cycles.

    • For a DTC with a drive cycle number 1, only the malfunction determination data is recorded.

    • For a DTC with a drive cycle number 2, both the malfunction determination and undetermined data is recorded.

Freeze frame data table

NOTE:

  • Refer to the PID monitor table to confirm the engine control system operation status when the PCM does not store a DTC. (See PCM INSPECTION [SKYACTIV-G 2.0].)

  • Freeze frame data items are not displayed according to detected DTC.

—: Not applicable

Freeze frame data item

Unit

Description

Corresponding PID data monitor item

FUELSYS1

Open Loop/Closed Loop/OL-Drive/OL-Fault/CL-Fault

Fuel system status

FUELSYS

LOAD

%

Calculated engine load

ECT

°C, °F

Engine coolant temperature

ECT

SFT1

%

Short term fuel trim

SHRTFT1

LFT1

%

Long term fuel trim

LONGFT1

MAP

KPa , mBar , psi, in H20

Manifold absolute pressure

MAP

RPM

RPM

Engine speed

RPM

VS

KPH, MPH

Vehicle speed

VSS

SPARKADV

°(deg)

Ignition timing

SPARKADV

IAT

°C, °F

Intake air temperature

IAT

MAF

g/sec

Mass airflow

MAF

TP

%

Throttle valve position No.1

TP1

RUNTM

hh:mm:ss

Time from engine start

EVAPPCT

%

Purge solenoid valve controlled value

FLI

%

Fuel level in fuel tank

FLI

WARMUPS

Number of warm-up cycle after DTC cleared

CLRDIST

km, ft, mi

Mileage after DTC cleared

FTP

KPa , mBar , psi, in H20

Evaporative (EVAP) system vapor pressure

FTP

BARO

KPa , mBar , psi, in H20

Barometric pressure

BARO

CATTEMP11

°C, °F

Estimated catalytic converter temperature

CATT11_DSD

VPWR

V

Module supply voltage

VPWR

ALV

%

Engine load

LOAD

EQ_RAT

Target equivalence ratio (lambda)

EQ_RAT11_DSD

TP_REL

%

Relative throttle position

TP_REL

AAT

°C, °F

Ambient air temperature

AAT

TP_B

%

Throttle valve position No.2

TP2

APP_D

%

Accelerator pedal position No.1

APP1

APP_E

%

Accelerator pedal position No.2

APP2

TAC_PCT

%

Target throttle valve position

ETC_DSD

FUEL_TYP

NONE/Gas/METH/ETH/DSL/ELEC

Type of fuel currently being utilized by the vehicle

STSO2FT1

%

Short term fuel trim (HO2S)

SHRTFT12

LGSO2FT1

%

Long term fuel trim (HO2S)

LONGFT12

FRP

KPa , mBar , psi, in H20

Fuel pressure (absolute)

FUEL_PRES

ECT1_SUP

No/Yes

Engine coolant temperature No.1 support

ECT2_SUP

No/Yes

Engine coolant temperature No.2 support

ECT1

°C, °F

Engine coolant temperature No.1

ECT2

°C, °F

Engine coolant temperature No.2

IAT11_SUP

No/Yes

Intake air temperature No.1 support

IAT12_SUP

No/Yes

Intake air temperature No.2 support

IAT11

°C, °F

Intake air temperature No.1

IAT12

°C, °F

Intake air temperature No.2

IAT2

Snapshot data table

NOTE:

  • Refer to the PID monitor table to confirm the engine control system operation status when the PCM does not store a DTC. (See PCM INSPECTION [SKYACTIV-G 2.0].)

  • Snapshot data items are not displayed according to detected DTC.

—: Not applicable

Snapshot data item

Unit

Definition

Data read/use method

Corresponding PID data monitor item

ALTT_V

V

Generator output voltage

ALTT V

MIL

Off/On

Check engine light illumination status

MIL

APP1

V

Accelerator pedal position No.1

APP1

%

APP2

V

Accelerator pedal position No.2

APP2

%

TP1

V

Throttle valve position No.1

TP1

%

TP2

V

Throttle valve position No.2

TP2

%

ALT_CUR_DSD

A

Generator current desired

BATT_RES

mΩ

Battery inferred internal resistance

TOTAL_TIME

hh:mm:ss

Total time

The elapsed time when the PCM detected a DTC can be calculated by performing the following procedure.

  • Verify the instrument cluster PID item TOTAL_TIME.

  • Verify the snapshot data item TOTAL_TIME.

  • Subtract 2 from 1.

TOTAL_DIST

km, ft, mi

Total distance

The distance traveled when the PCM detected a DTC can be calculated by performing the following procedure.

  • Verify the odometer value in the instrument cluster.

  • Verify the snapshot data item TOTAL_DIST.

  • Subtract 2 from 1.

FUELSYS

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

Fuel system status

FUELSYS

LOAD_C

%

Calculated engine load

ECT

°C, °F

Engine coolant temperature

ECT

SHRTFT1

%

Short term fuel trim

SHRTFT1

LONGFT1

%

Long term fuel trim

LONGFT1

MAP

KPa , mBar , psi, in H20

Manifold absolute pressure

MAP

RPM

RPM

Engine speed

RPM

VSS

KPH, MPH

Vehicle speed

VSS

SPARKADV

°(deg)

Ignition timing

SPARKADV

IAT

°C, °F

Intake air temperature No.1

IAT

MAF

g/sec

Mass airflow

MAF

O2S12

V

HO2S

O2S12

EG_RUN_TIME

hh:mm:ss

Time from engine start

FUEL_PRES

KPa , mBar , psi, in H20

Fuel pressure

FUEL_PRES

SEGRP_DSD

%

Target EGR valve position

EVAPCP

%

Purge solenoid valve controlled value

FLI

%

Fuel level in fuel tank

FLI

CLR_CNT

Number of warm-up cycle after DTC cleared

CLR_DIST

km, ft, mi

Mileage after DTC cleared

FTP

KPa , mBar , psi, in H20

Fuel tank pressure

FTP

BARO

KPa , mBar , psi, in H20

Barometric pressure

BARO

CATT11_DSD

°C, °F

Estimated catalytic converter temperature

CATT11_DSD

VPWR

V

Module supply voltage

VPWR

LOAD

%

Engine load

LOAD

EQ_RAT11_DSD

Target equivalence ratio (lambda)

EQ_RAT11_DSD

TP_REL

%

Relative throttle position

TP_REL

AAT

°C, °F

Ambient air temperature

AAT

ETC_DSD

%

Target throttle valve position

ETC_DSD

FUEL_TYP

NONE/Gas/METH/ETH/DSL/ELEC

Type of fuel currently being utilized by the vehicle

SHRTFT12

%

Short term fuel trim (HO2S)

SHRTFT12

LONGFT12

%

Long term fuel trim (HO2S)

LONGFT12

FRP

KPa , mBar , psi, in H20

Fuel pressure (absolute)

FUEL_PRES

ECT2_SUP

No/Yes

Engine coolant temperature No.2 support

ECT2

°C, °F

Engine coolant temperature No.2

IAT12

°C, °F

Intake air temperature No.2

IAT2

On-Board System Readiness Tests Access Procedure

1. Connect the M-MDS to the DLC–2.

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

a. Select “Powertrain”.

b. Select “OBD Test Modes”.

c. Select “Mode 1 Powertrain Data”.

d. Select “PCM”.

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

4. Monitor those PIDs and verify that the system monitor is completed.

PID/DATA Monitor and Record Procedure

NOTE:

  • The PID data screen function is used for monitoring the calculated value of input/output signals in the module. Therefore, if the monitored value of the output parts is not within specification, it is necessary to inspect the monitored value of input parts corresponding to the applicable output part control. In addition, because the system does not display an output part malfunction as an abnormality in the monitored value, it is necessary to inspect the output parts individually.

  • When detecting DTCs, PIDs related to a malfunctioning system may not display even if the module is normal. Therefore, if a PID is not displayed, it is necessary to verify the DTC, perform malfunction diagnosis of the DTC that was detected, and do repairs.

1. Connect the M-MDS to the DLC–2.

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

a. Select “DataLogger”.

b. Select “Modules”.

c. Select “PCM”.

3. Select the applicable PID from the PID table.

4. Verify the PID data according to the detections on the screen.

Diagnostic Monitoring Test Results Access Procedure

1. Connect the M-MDS to the DLC–2.

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

a. Select “Powertrain”.

b. Select “OBD Test Modes”.

c. Select “Mode 6 On-Board Test Results”.

3. Verify the diagnostic monitoring test result according to the directions on the M-MDS screen.

Active Command Modes Procedure

1. Connect the M-MDS to the DLC–2.

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

a. Select “DataLogger”.

b. Select “Modules”.

c. Select “PCM”.

3. Select the simulation items from the PID table.

4. Using the active command modes function, inspect the operation of each part.

  • If the operation of output parts cannot be verified after the active command mode inspection is performed, this could indicate the possibility of an open or short circuit, sticking, or operation malfunction in the output parts.

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