Mitsubishi Outlander GS45X. Manual — part 619
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-299
STEP 10. Measure the power supply voltage at injector
relay harness side connector A-24X.
(1) Disconnect the connector A-24X and measure at the
harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 4 and ground.
• Voltage should be battery positive voltage.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 12.
NO : Go to Step 11.
STEP 11. Check harness connector A-33X at MFI relay for
damage.
Q: Is the harness connector in good condition?
YES : Repair harness wire between MFI relay connector
A-33X (terminal No. 2) and injector relay
connector A-24X (terminal No. 4) because of open
circuit or short circuit to ground. Then go to Step
20.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 20.
STEP 12. Check for open circuit and short circuit to
ground between injector relay connector A-24X (terminal
No. 3) and No. 1 cylinder injector connector B-101
(terminal No. 1).
NOTE: Check harness connector after checking intermediate
connector A-13. If intermediate connector is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion
. Then go to Step 20 .
Q: Is the harness wire in good condition?
YES : Go to Step 13.
NO : Repair it. Then go to Step 20.
STEP 13. Check harness connector C-304 at ETACS-ECU
for damage.
Q: Is the harness connector in good condition?
YES : Repair harness wire between injector relay connector
A-24X (terminal No. 1) and ETACS-ECU connector
C-304 (terminal No. 10) because of harness damage.
Then go to Step 20.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 20.
2
1
3
4
AK604035 AC
A-24X harness
connector:
component side
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-300
STEP 14. Check harness connector A-33X at MFI relay for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 15.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 20.
STEP 15. Check for harness damage between MFI relay
connector A-33X (terminal No. 2) and injector relay
connector A-24X (terminal No. 4).
Q: Is the harness wire in good condition?
YES : Go to Step 16.
NO : Repair it. Then go to Step 20.
STEP 16. Check for harness damage between injector
relay connector A-24X (terminal No. 3) and No. 1 cylinder
injector connector B-101 (terminal No. 1).
NOTE: Check harness after checking intermediate connector
A-13. If intermediate connector is damaged, repair or replace it.
Refer to GROUP 00E, Harness Connector Inspection
Then go to Step 20 .
Q: Is the harness wire in good condition?
YES : Go to Step 17.
NO : Repair it. Then go to Step 20.
STEP 17. Check harness connector B-10 at ECM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 18.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 20.
STEP 18. Check for open circuit, short circuit to ground
and harness damage between No. 1 cylinder injector
connector B-101 (terminal No. 2) and ECM connector B-10
(terminal No. 2).
Q: Is the harness wire in good condition?
YES : Go to Step 19.
NO : Repair it. Then go to Step 20.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-301
STEP 19. Using the oscilloscope, check the No. 1 cylinder
injector.
(1) Disconnect the No. 1 cylinder injector connector B-101 and
connect the test harness special tool MB991658 between
the separated connectors. (All terminals should be
connected.)
(2) Connect the oscilloscope probe to the injector side
connector terminal No. 2.
NOTE: When measuring with the ECM side connector, dis-
connect all ECM connectors. Connect the check harness
special tool (MB992110) between the separated connec-
tors. Then connect the oscilloscope probe to the check har-
ness connector terminal No. 2.
(3) Start the engine and run at idle.
(4) Measure the waveform.
• The waveform should show a normal pattern similar to
the illustration.
(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the waveform normal?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunctions
.
NO : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, Diagnosis
− ID Code Registration Judgment Table <Vehicles
or GROUP 42C, Diagnosis
− ID
Codes Registration Judgment Table <Vehicles with
WCM>
. Then go to Step 20.
STEP 20. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Pattern 23
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0201 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK604471
1 2
AB
Injector
connector
MB991658
Oscilloscope
AK604546 AB
A
Normal waveform
A:Injector drivetime
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-302
DTC P0202: Injector Circuit-Cylinder 2
AKA00837
1
3
2
4
1
2
3
4
1
2
3 4 5 6 7 8 9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64
1 2 3 4
5 6 7
15
14
13
12
11
9
8
1
6
4
5
9
8
10
10
11
13
15
14
12
16
7
2 3
2
1
1
10 111213 14 1516 17 1819 20
2 3 4
5 6 7 8 9
INJECTOR CIRCUIT-CYLINDER 2
BLUE
B-10
AC
20A
WHITE
WHITE
A-33X
MFI
RELAY
4
3
1
2
22
36
FUSIBLE LINK
OFF
ON
4
1
7
A-13
A-24X
3
2
INJECTOR
RELAY
OFF
ON
RELAY BOX
(ENGINE COMPARTMENT)
ENGINE CONTROL MODULE
TO ECM
BLA
CK
BLA
CK
BLA
CK
INJECTOR
NO. 2
B-120
(MU802062)
1
2
3
RED-
WHITE
RED-
WHITE
RED-
WHITE
YELLO
W
-
BLA
CK
WHITE
WHITE
WHITE
VIOLET
VIOLET
10
6
C-304
C-317
IGNITION
SWITCH (IG1)
ETACS-
ECU
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