Mitsubishi Eclipse. Manual - part 130

 

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Mitsubishi Eclipse. Manual - part 130

 

 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-13

INSPECTION USING SCAN TOOL MB991958, 
DATA LIST AND ACTUATOR TESTING

.

Required Special Tools:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: USB Cable

• MB991911: Main Harness B

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select "Interactive Diagnosis" from the start-up screen.
4. Select "System select."
5. Choose "MFI" from the "POWER TRAIN" tab.
6. Select "MITSUBISHI."
7. Select "Data List" or "Actuator Test."
8. Choose an appropriate item and select the "OK" button.

ON-BOARD DIAGNOSTICS

The engine control module (ECM) <M/T> or powertrain control module (PCM) <A/T> monitors the input/out-
put signals (some signals all the time and others under specified conditions) of the ECM <M/T> or PCM 
<A/T>. When a malfunction continues for a specified time or longer after the irregular signal is initially moni-
tored, the ECM <M/T> or PCM <A/T> judges that a malfunction has occurred. After the ECM <M/T> or PCM 
<A/T> 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 "*," a diagnostic trouble code is recorded 
on the first detection of the malfunction. There are 86 diagnostic items. The diagnostic results can be read out 
with a scan tool. Since memorization 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, how-
ever, be erased when the battery terminal or the ECM <M/T> or PCM <A/T> connector is disconnected. In 
addition, the diagnostic trouble code can also be erased by turning the ignition switch to "ON" position and 
sending the diagnostic trouble code erase signal from scan tool to the ECM <M/T> or PCM <A/T>.
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 <M/T> or PCM <A/T> in 
order to erase the diagnostic memory. The 86 diagnostic items are all indicated sequentially from the smallest 
code number. The ECM <M/T> or PCM <A/T> records the engine operating condition when the diagnostic 
trouble code is set. This data is called "Freeze-frame" date. 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 <M/T> or PCM <A/T> detects multiple malfunctions, the ECM <M/T> or PCM <A/T> stores 
the data for only the first item that was detected.

AK300810

AB

MB991911

16-PIN

MB991827

MB991824 

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-14

However, if the ECM <M/T> or PCM <A/T> detects a misfire or a fuel system malfunction, the ECM <M/T> or 
PCM <A/T> 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.

OBD- II DRIVE CYCLE

All kinds of diagnostic trouble codes (DTCs) can be monitored by carrying out a short drive according to the 
following six drive cycle pattern. 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 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 drive.
NOTE: Check that the diagnosis trouble code (DTC) is not output before traveling in the drive cycle pattern. 
Erase the DTC if it has been output.
DRIVE CYCLE PATTERN LIST

SCAN TOOL 
DISPLAY

ITEM 
NO.

DATA ITEM

UNIT or STATE

ECT SENSOR

21

Engine coolant temperature sensor

°C or °F

ENGINE LOAD

87

Calculated load value

%

ENGINE SPEED

22

Crankshaft position sensor (engine speed) r/min

IAT SENSOR

13

Intake air temperature sensor

°C or °F

IG. TIMING ADV

44

Ignition coils and ignition power transistor

deg

LONG TRIM B1

81

Long-term fuel trim

%

MAP/MDP SENSOR 32

Manifold absolute pressure sensor

kPa

SHORT TRIM B1

82

Short-term fuel trim (trim)

%

SYS. STATUS

88

Fuel control system status

• Open loop

• Closed loop

• Open loop-drive condition

• Open loop-DTC set

• Closed loop-O

2

 (rear) failed

TP SENSOR

8A

Throttle position sensor

%

VAF/MAF SNSR.

12

Volume airflow sensor (mass airflow rate)

gm/s

VSS

24

Vehicle speed sensor

km/h or mph

PROCEDURE MONITOR ITEM

DIAGNOSTIC TROUBLE CODE (DTC)

P.13A-5

Evaporative emission system leak monitor

P0441, P0442, P0451, P0452, P0453, 
P0455, P0456

P.13A-5

Fuel trim monitor

P0171,P0172

P.13A-5

Catalytic converter monitor

P0421

P.13A-5

Heated oxygen sensor monitor

P0133, P0139

P.13A-5

Exhaust gas recirculation (EGR) system monitor P0401

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-15

P.13A-5

Other monitor

Main components

P0106, P0107, P0108, P0134, P0300, 
P0301, P0302, P0303, P0304, P0506, 
P0507

Sensors and switches

P0101, P0102, P0111, P0112, P0113, 
P0116, P0117, P0118, P0121, P0122, 
P0123, P0125, P0181, P0182, P0183, 
P0335, P0340, P0461, P2227, P2228, 
P2229

Wire breakage and short 
circuit

P0130, P0131, P0132, P0135, P0136, 
P0137, P0138, P0141, P0201, P0202, 
P0203, P0204, P0403, P0443, P0446

PROCEDURE MONITOR ITEM

DIAGNOSTIC TROUBLE CODE (DTC)

MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L>

13A-16

.

PROCEDURE 1

EVAPORATIVE EMISSION SYSTEM LEAK MONITOR
DTC

P0441, P0442, P0451, P0452, P0453, P0455, P0456

Drive cycle 
pattern

This monitor [from start to ignition switch to the "LOCK" (OFF) position] will be completed 
while traveling with the following drive cycle pattern. It will take 8 minutes. You must 
complete this drive twice.
NOTE: Vehicle speed and throttle opening angle should be within the shaded range.

Inspection 
conditions

• Engine coolant temperature: 45°C (113°F) or less (The engine is stopped before the test 

drive is started)

• Atmospheric temperature: 5 − 45°C (41 − 113°F)

• Condition of A/T: Selector lever D range

AKX01345

AKX01345

(3)

(2)

(1)

(4)

(5)

200 SECONDS
OR MORE

PREPARATION
PERIOD

ENGINE START

IGNITION SWITCH: 
"LOCK" (OFF) POSITIO

DURING
MONITOR

150 SECONDS
OR MORE

89 - 97 km/h (55 - 60 mph)
M/T: 5TH SPEED

97
(60)

64
(40)

32
(20)

0

100

50

0

VEHICLE SPEED
km/h (mph)

CALCULATED
LOAD (%)

AKX01345 AF

 

 

 

 

 

 

 

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