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Mitsubishi Lancer Evolution X. Manual - part 240

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI)

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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

Airflow sensor

Mass airflow sensor

g/s

TP sensor (main)

Throttle position sensor (main)

Barometric pressure
sensor

Barometric pressure sensor

kPa or in.Hg

Relative TP sensor

Relative throttle position sensor

TP sensor (sub)

Throttle position sensor (sub)

APP sensor (main)

Accelerator pedal position sensor (main) %

APP sensor (sub)

Accelerator pedal position sensor (sub)

Fuel system status
(bank 1)

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
(bank 2)

Fuel control system status (bank 2)

N/A

Calculated load value

ECT sensor

Engine coolant temperature sensor

° C or ° F

Short term fuel trim
(bank 1)

Short term fuel trim

C5*

Short term fuel trim
(bank 3)

Short term fuel trim (bank 3)

****

Long term fuel trim
(bank 1)

Long term fuel trim

C7*

Long term fuel trim
(bank 3)

Long term fuel trim (bank 3)

****

MAP sensor

Manifold absolute pressure sensor

kPa or in.Hg

Crankshaft position
sensor

Crankshaft position sensor

r/min

Vehicle speed

km/h or mph

Spark advance

° CA

Intake air temperature
sensor 1

Intake air temperature sensor 1

° C or ° F

Time since engine
running

Time since engine running

sec

EVAP. emission purge
SOL. duty

Evaporative emission purge solenoid
duty

Fuel level gauge

Power supply voltage

Absolute load value

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI)

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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 "****".

Target equivalence
ratio

Target equivalence ratio

−

Intake air temperature
sensor 1

Intake air temperature sensor 1 (ambient
air temperature)

° C or ° F

Throttle actuator

Throttle actuator control motor

Relative APP sensor

Relative accelerator pedal position
sensor

Intake air temperature
sensor 2

Intake air temperature sensor 2

° C or ° F

242

Fuel tank differential
PRS.SNSR

Fuel tank differential pressure sensor

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)

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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

DTC that caused required freeze frame
data storage

Pxxxx, Uxxxx

FUELSYS 1

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

LOAD_PCT

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

ECT

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

SHRTFT 1

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

LONGFT 1

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

MAP

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

RPM

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

VSS

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

SPARKADV

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

IAT

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

MAF

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

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

RUNTM

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

EVAP_PCT

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

FLI

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

EVAP_VP

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

BARO

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

VPWR

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

LOAD_ABS

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

EQ_RAT

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

TP_R

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

AAT

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

TP_B

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

APP_D

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

APP_E

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

TAC_PCT

Command Throttle Actuator Control

APP_R

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

IAT2

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

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

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MULTIPORT FUEL INJECTION (MFI)

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OBD- II DRIVE CYCLE

All kinds of diagnostic trouble codes (DTCs) can be monitored by carrying out a short drive according to the
following 23 drive cycle patterns. In other words, doing such a drive regenerates any kind of trouble which
involves illuminating the Malfunction Indicator Lamp (SERVICE ENGINE SOON or Check Engine Lamp) and
verifies the repair procedure has been eliminated [the trouble the Malfunction Indicator Lamp (SERVICE
ENGINE SOON or Check Engine Lamp) is no longer illuminated].

CAUTION

Two technicians should always be in the vehicle when carrying out a test.
NOTE: Check that the diagnosis trouble code (DTC) is not output before driving the OBD-II drive cycle. Erase
the DTC if it has been output.
NOTE: Drive cycle patterns are not established for Vehicle speed signal monitor (DTC P0500), Power steer-
ing pressure switch monitor (P0551), and Fuel level sensor monitor (DTC P0461, P2066). Please reference
the M.U.T. data list to judge whether these monitor items are normal.

DRIVE CYCLE PATTERN LIST

MONITOR ITEM

DIAGNOSTIC TROUBLE
CODE (DTC)

PATTERN

Heated oxygen sensor (front) monitor <Readiness test
item>

P0133

Heated oxygen sensor (rear) feedback control system
monitor

P2096, P2097

Heated oxygen sensor heater monitor <Readiness test
item>

P0031, P0037

Heated oxygen sensor heater monitor

P0032, P0038

Catalytic converter monitor <Readiness test item>

P0420

Evaporative emission system leak monitor (small leak and
gross leak) <Readiness test item>

P0442, P0455

Evaporative purge system monitor

P0441

Fuel tank pressure sensor monitor

P0450

Evaporative emission system leak monitor (very small leak)
<Readiness test item>

P0456

Airflow sensor monitor

P0101

Manifold absolute pressure (MAP) sensor monitor

P0106, P0107

Intake air temperature sensor monitor

P0096, P0111

Engine coolant temperature sensor monitor

P0116, P0125

Thermostat monitor

P0128

Heated oxygen sensor (rear) monitor <Readiness test
item>

P0139

Air fuel ratio feedback monitor

P0134

Heated oxygen sensor (rear) monitor <Readiness test
item>

P0140

Fuel tank temperature sensor monitor

P0181

Misfire monitor

P0300, P0301, P0302,
P0303, P0304

Fuel tank pressure sensor monitor

P0451

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