Mitsubishi Outlander GS45X. Manual - part 773

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-25

Catalyst Monitor Bank 2
Frequency ratio between
Front- and Rear-Oxygen
Sensors

ECM monitors the
deterioration of catalyst at
left bank side by the output
frequency ratio between left
bank heated oxygen sensor
(front) and left bank heated
oxygen sensor (rear).

× 0.0039

EGR Monitor
Difference of manifold
pressure before and after
EGR activation

ECM monitors the
operation of EGR system
by the pressure difference
of intake manifold between
before and after
introduction of EGR using
the manifold absolute
pressure sensor.

× 0.0117 kPa

EVAP Monitor (Cap off)
Pressure drop during
de-pressurizing

ECM monitors the leak of
fuel evaporation gas by
checking whether the
pressure can be reduced
(the amount of pressure
reduction) using the fuel
tank differential pressure
sensor after sealing the fuel
tank and the fuel line.

× 0.0117 kPa

EVAP Monitor (0.040")
Pressure rise during airtight
condition

After ECM vacuumizes the
fuel tank and the fuel line
and then the specified time
is passed, ECM monitors
the leak of fuel evaporation
gas through the fuel tank
differential pressure sensor
to check the reduction of
vacuum in the fuel tank.

× 0.0117 kPa

EVAP Monitor (0.020")
Pressure rise during airtight
condition

× 0.0117 kPa

Oxygen Sensor Heater
Monitor Bank 1

− Sensor 1

Heater Monitoring Current

ECM checks the amperage
of the right bank heated
oxygen sensor (front)
heater.

× 0.001 A

ON-BOARD
DIAGNOSTIC
MONITOR ID

STANDARDIZED /
MANUFACTURER
DEFIND TEST ID

MONITORING ITEM

SIMPLE TECHNICAL DESCRIPTION CONVERSION

COEFFICIENT IN USING
GENERAL SCAN TOOL

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-26

Oxygen Sensor Heater
Monitor Bank 2

− Sensor 1

Heater Monitoring Current

ECM checks the amperage
of the left bank heated
oxygen sensor (front)
heater.

× 0.001 A

Mis-Fire Cylinder 1 Data
EWMA Misfire Counts For
Last 10 Driving Cycles

ECM monitors angular
acceleration of crankshaft
and detect misfire. EWMA
(Exponential Weighted
Moving Average) misfire
counts for last 10 driving
cycles.

× 1 count

Mis-Fire Cylinder 1 Data
Misfire Counts For
Last/Current Driving Cycle

ECM monitors angular
acceleration of crankshaft
and detect misfire. Misfire
counts for last/current
driving cycle.

× 1 count

Mis-Fire Cylinder 2 Data
EWMA Misfire Counts For
Last 10 Driving Cycles

ECM monitors angular
acceleration of crankshaft
and detect misfire. EWMA
(Exponential Weighted
Moving Average) misfire
counts for last 10 driving
cycles.

× 1 count

Mis-Fire Cylinder 2 Data
Misfire Counts For
Last/Current Driving Cycle

ECM monitors angular
acceleration of crankshaft
and detect misfire. Misfire
counts for last/current
driving cycle.

× 1 count

Mis-Fire Cylinder 3 Data
EWMA Misfire Counts For
Last 10 Driving Cycles

ECM monitors angular
acceleration of crankshaft
and detect misfire. EWMA
(Exponential Weighted
Moving Average) misfire
counts for last 10 driving
cycles.

× 1 count

Mis-Fire Cylinder 3 Data
Misfire Counts For
Last/Current Driving Cycle

ECM monitors angular
acceleration of crankshaft
and detect misfire. Misfire
counts for last/current
driving cycle.

× 1count

ON-BOARD
DIAGNOSTIC
MONITOR ID

STANDARDIZED /
MANUFACTURER
DEFIND TEST ID

MONITORING ITEM

SIMPLE TECHNICAL DESCRIPTION CONVERSION

COEFFICIENT IN USING
GENERAL SCAN TOOL

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-27

NOTE: *1: Minimum value: The test fails if test value is less
than this value.
NOTE: *2: Maximum value: The test fails if test value is greater
than this value.
NOTE: When not finishing the monitor of the driving cycle for
the request of On-Board Monitoring Test Request, the ECM
outputs the stored latest monitor test result.

Mis-Fire Cylinder 4 Data
EWMA Misfire Counts For
Last 10 Driving Cycles

ECM monitors angular
acceleration of crankshaft
and detect misfire. EWMA
(Exponential Weighted
Moving Average) misfire
counts for last 10 driving
cycles.

× 1 count

Mis-Fire Cylinder 4 Data
Misfire Counts For
Last/Current Driving Cycle

ECM monitors angular
acceleration of crankshaft
and detect misfire. Misfire
counts for last/current
driving cycle.

× 1 count

Mis-Fire Cylinder 5 Data
EWMA Misfire Counts For
Last 10 Driving Cycles

ECM monitors angular
acceleration of crankshaft
and detect misfire. EWMA
(Exponential Weighted
Moving Average) misfire
counts for last 10 driving
cycles.

× 1 count

Mis-Fire Cylinder 5 Data
Misfire Counts For
Last/Current Driving Cycle

ECM monitors angular
acceleration of crankshaft
and detect misfire. Misfire
counts for last/current
driving cycle.

× 1 count

Mis-Fire Cylinder 6 Data
EWMA Misfire Counts For
Last 10 Driving Cycles

ECM monitors angular
acceleration of crankshaft
and detect misfire. EWMA
(Exponential Weighted
Moving Average) misfire
counts for last 10 driving
cycles.

× 1 count

Mis-Fire Cylinder 6 Data
Misfire Counts For
Last/Current Driving Cycle

ECM monitors angular
acceleration of crankshaft
and detect misfire. Misfire
counts for last/current
driving cycle.

× 1 count

ON-BOARD
DIAGNOSTIC
MONITOR ID

STANDARDIZED /
MANUFACTURER
DEFIND TEST ID

MONITORING ITEM

SIMPLE TECHNICAL DESCRIPTION CONVERSION

COEFFICIENT IN USING
GENERAL SCAN TOOL

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>

13B-28

NOTE: When the monitored test results are erased by the bat-
tery disconnection and so on, the ECM outputs the values in
hexadecimal of "0000" or "FFFF", otherwise it outputs abnor-
mal values and so on. In case of this, the ECU outputs are han-
dled as invalid-values. When the first monitor (Readiness
Status) is completed after this, the ECM outputs the valid-val-
ues.
NOTE: "Test Limit Type & Component ID byte" output from the
ECM is given in hexadecimal of "00" or "80". "00" means the
maximum value and "80" means the minimum value.

ON-BOARD DIAGNOSTICS

The engine control module (ECM) monitors the
input/output signals (some signals all the time and
others under specified conditions) of the ECM. When
a malfunction continues for a specified time or longer
after the irregular signal is initially monitored, the
ECM judges that a malfunction has occurred. After
the ECM first detects a malfunction, a diagnostic
trouble code is recorded when the engine is restarted
and the same malfunction is re-detected. However,
for items marked with a "*1", a diagnostic trouble
code is recorded on the first detection of the malfunc-
tion. There are 149 diagnostic items. The diagnostic
results can be read out with a scan tool. Since mem-
orization of the diagnostic trouble codes is backed up
directly by the battery, the diagnostic results are
memorized even if the ignition key is turned off. The
diagnostic trouble codes will, however, be erased
when the battery terminal or the ECM connector is
disconnected. In addition, the diagnostic trouble
code can also be erased by turning the ignition
switch to ON and sending the diagnostic trouble
code erase signal from scan tool MB991958 to the
ECM.

NOTE: If the sensor connector is disconnected with
the ignition switch turned on, the diagnostic trouble
code is memorized. In this case, send the diagnostic
trouble code erase signal to the ECM in order to
erase the diagnostic memory. The 149 diagnostic
items are all indicated sequentially from the smallest
code number. The ECM records the engine operat-
ing condition when the diagnostic trouble code is set.
This data is called "Freeze-frame" data. This data
can be read by using the scan tool, and can then be
used in simulation tests for troubleshooting. Data
items are as follows:
NOTE: If the ECM detects multiple malfunctions, the
ECM stores the "Freeze-frame" data for only the first
item that was detected. However, if the ECM detects
a misfire or a fuel system malfunction, the ECM
stores the data by giving priority to the misfire or fuel
system malfunction, regardless of the order in which
the malfunction was detects.
NOTE: As for Diagnostic trouble code P1603,
"Freeze-frame" data is not memorized.

Freeze Frame Data for M.U.T.-III

ITEM NO. M.U.T.-III SCAN TOOL

DISPLAY

DATA ITEM

UNIT or STATE

Odometer

km or mile

Ignition cycle (Warm
up cycle)

Ignition cycle (Warm up cycle)

−

Accumulated minute

min

Content .. 771 772 773 774 ..