ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)]
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.
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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
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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.
|
— |
|
TOTAL_DIST |
km, ft, mi |
Total distance |
The distance traveled when the PCM detected a DTC can be calculated by performing the following procedure.
|
— |
|
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.
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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.