Mitsubishi Outlander GS45X. Manual — part 551

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

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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 138 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 138 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 detected.
NOTE: As for Diagnostic trouble code P1603,
"Freeze-frame" data is not memorized.

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

NOTE: *: Accumulated time of current malfunction from time point when malfunction is detected.

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

DISPLAY

DATA ITEM

UNIT or STATE

1

Odometer

Odometer

km or mile

2

Ignition cycle (Warm
up cycle)

Ignition cycle (Warm up cycle)

−

4

Accumulated minute

Accumulated minute*

min

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

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Freeze Frame Data (OBD) for M.U.T.-III

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

DISPLAY

DATA ITEM

UNIT or STATE

AA

Airflow sensor

Mass airflow sensor

g/s

AB

TP sensor (main)

Throttle position sensor (main)

%

BA

Target EGR

Target EGR stepper motor

%

BB

Barometric pressure
sensor

Barometric pressure sensor

kPa or in.Hg

BC

Relative TP sensor

Relative throttle position sensor

%

BD

TP sensor (sub)

Throttle position sensor (sub)

%

BE

APP sensor (main)

Accelerator pedal position sensor (main) %

BF

APP sensor (sub)

Accelerator pedal position sensor (sub)

%

C0

Fuel system status
(bank1)

Fuel control system status

• Open loop
• Closed loop
• Open loop-drive

condition

• Open loop-DTC set
• Closed loop-O2 (rear)

failed

C1*

Fuel system status
(bank2)

Fuel control system status (bank2)

N/A

C2

Calculated load value

Calculated load value

%

C3

ECT sensor

Engine coolant temperature sensor

°C or °F

C4

Short term fuel trim
(bank1)

Short term fuel trim

%

C5*

Short term fuel
trim(bank3)

Short term fuel trim (bank3)

****

C6

Long term fuel trim
(bank1)

Long term fuel trim

%

C7*

Long term fuel trim
(bank3)

Long term fuel trim (bank3)

****

CC

MAP sensor

Manifold absolute pressure sensor

kPa or in.Hg

CD

Crankshaft position
sensor

Crankshaft position sensor

r/min

CE

Vehicle speed

Vehicle speed

km/h or mph

CF

Spark advance

Spark advance

°CA

D0

Intake air temperature
sensor 1

Intake air temperature sensor

°C or °F

D1

Time since engine
running

Time since engine running

sec

D6

EVAP. emission purge
SOL. duty

Evaporative emission purge solenoid
duty

%

D7

Fuel level gauge

Fuel level gauge

%

D8

Power supply voltage

Power supply voltage

V

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

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NOTE: *: Data items are displayed on M.U.T.-III display, but the in-line 4 engine is not applicable and its data
is displayed as "N/A" or "****".

D9

Absolute load value

Absolute load value

%

DA

Target equivalence
ratio

Target equivalence ratio

−

DB

Intake air temperature
sensor 1

Intake air temperature sensor (ambient
air temperature)

°C or °F

DC

Throttle actuator

Throttle actuator control motor

%

DD

Relative APP sensor

Relative accelerator pedal position
sensor

%

242

Fuel tank differential
PRS. SNSR

Fuel tank differential pressure sensor

Pa

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

DISPLAY

DATA ITEM

UNIT or STATE

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

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Freeze Frame Data for General Scan Tool

COMMON
EXAMPLE of
GENERAL SCAN
TOOL DISPLAY

PRAMETER
IDENTIFICATION
(PID)

DESCRIPTION

UNIT or STATE

DTCFRZF

02

DTC that caused required freeze frame
data storage

Pxxxx, Uxxxx

FUELSYS 1

03

See M.U.T.-III Item No. C0

LOAD_PCT

04

See M.U.T.-III Item No. C2

ECT

05

See M.U.T.-III Item No. C3

SHRTFT 1

06

See M.U.T.-III Item No. C4

LONGFT 1

07

See M.U.T.-III Item No. C6

MAP

0B

See M.U.T.-III Item No. CC

RPM

0C

See M.U.T.-III Item No. CD

VSS

0D

See M.U.T.-III Item No. CE

SPARKADV

0E

See M.U.T.-III Item No. CF

IAT

0F

See M.U.T.-III Item No. D0

MAF

10

See M.U.T.-III Item No. AA

TP

11

See M.U.T.-III Item No. AB

RUNTM

1F

See M.U.T.-III Item No. D1

EGR_PCT

2C

See M.U.T.-III Item No. BA

EVAP_PCT

2E

See M.U.T.-III Item No. D6

FLI

2F

See M.U.T.-III Item No. D7

EVAP_VP

32

See M.U.T.-III Item No. 242

BARO

33

See M.U.T.-III Item No. BB

VPWR

42

See M.U.T.-III Item No. D8

LOAD_ABS

43

See M.U.T.-III Item No. D9

EQ_RAT

44

See M.U.T.-III Item No. DA

TP_R

45

See M.U.T.-III Item No. BC

AAT

46

See M.U.T.-III Item No. DB

TP_B

47

See M.U.T.-III Item No. BD

APP_D

49

See M.U.T.-III Item No. BE

APP_E

4A

See M.U.T.-III Item No. BF

TAC_PCT

4C

See M.U.T.-III Item No. DC

APP_R

5A

See M.U.T.-III Item No. DD