Mitsubishi Outlander GS45X. Manual — part 860
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-373
STEP 4. Check the No. 4 cylinder injector.
(1) Disconnect the No. 4 cylinder injector connector B-116.
(2) Measure the resistance between injector side connector
terminal No. 1 and No. 2.
Standard value: 10.5
− 13.5 ohms [at 20°C (68°F)]
Q: Is the measured resistance between 10.5 and 13.5 ohms
[at 20
°C (68°F)]?
YES : Go to Step 5.
NO : Replace the No. 4 cylinder injector. Then go to Step 7.
STEP 5. Check for harness between the injector connector
B-116 and the ECM connector B-10.
(1) Disconnect the injector connector B-116 and the ECM
connector B-10.
(2) Measure the resistance between injector connector B-116
(terminal No. 2) and the ECM connector B-10 (terminal No.
19).
• Should be less than 2 ohms.
(3) Measure the continuity between the injector connector
B-116 (terminal No. 2) and ground.
• Not continuity.
Q: Is the connector wire in good condition?
YES : Go to Step 6.
NO : Repair it. Refer to GROUP 00E, Harness Connector
. Then go to Step 7.
AK700204
1 2
AB
Injector side
connector
1
2
AK700561 AB
B-116
harness connector:
component side
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-374
STEP 6. Using the oscilloscope, check the No. 4 cylinder
injector.
(1) Disconnect the No. 4 cylinder injector connector B-116 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 an oscilloscope probe to the check har-
ness connector terminal No. 19.
(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 Codes Registration Judgment Table <Vehicles
or GROUP 42C, Diagnosis
− ID
Codes Registration Judgment Table <Vehicles with
WCM>
STEP 7. 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 22
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0204 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK700557
1 2
AB
Injector connector
MB991658
Oscilloscope
AK700301
Normal waveform
A: Injector drive time
A
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-375
DTC P0205: Injector Circuit - Cylinder 5
AK700147
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
1
2 3
6
7 8
4 5
9 10
2
1
1
10 111213 14 1516 17 1819 20
2 3 4
5 6 7 8 9
B-104
(MU802062)
B-21
MU802645
1
6
2
50
9
BLUE
B-10
AB
20A
WHITE
WHITE
A-33X
4
3
1
2
22
OFF
ON
WHITE
RED-WHITE
4
1
10
6
7
C-304
C-317
A-13
A-24X
3
BLUE
2
OFF
ON
WHITE
BLUE
BLUE-
YELLO
W
BLUE-
YELLO
W
36
FUSIBLE LINK
ETACS-
ECU
INJECTOR CIRCUIT-CYLINDER 5
BLA
CK
BLA
CK
BLA
CK
IGNITION
SWITCH (IG1)
INJECTOR
RELAY
RELAY BOX
(ENGINE COMPARTMENT)
TO ECM
ENGINE CONTROL MODULE
MFI
RELAY
INJECTOR
NO. 5
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-376
.
CIRCUIT OPERATION
• The injector power is supplied from the injector
relay (terminal No. 3).
• The ECM controls the injector by turning the
power transistor in the ECM "ON" and "OFF".
.
TECHNICAL DESCRIPTION
• The amount of fuel injected by the injector is con-
trolled by the amount of continuity time the coil is
grounded by the ECM.
.
DESCRIPTIONS OF MONITOR METHODS
The ECM detects open circuit and short malfunction.
.
MONITOR EXECUTION
Continuous
.
AK900141 AD
B-104 (GR)
Connector: B-104
AK700399AB
MFI relay
A-33X
Connector: A-33X
AK900134
AD
B-21 (B)
Connector: B-21
Intermediate
connector
AK700413AB
A-24X
Connector: A-24X
Injector relay
AK700401AB
ECM
B-10 (GR)
Connector: B-10
AK700414 AB
ETACS-ECU
C-317
Connectors: C-304, C-317
C-304
AK900602
Connector: A-13
A-13
AB
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