Mitsubishi Outlander GS45X. Manual — part 954
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-749
STEP 4. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
(1) Turn the ignition switch to the "ON" position.
(2) After the MFI-DTC has been deleted, read the MFI-DTC
again.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC U1180 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-750
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Scan Tool Communication with ECM Is Not Possible.
71 72 73 74 75 76 77 78 79 80 81 82
83 84 85 86 87 88 89 90 91 92 93 94
95 96 97 98 99
100 101 102 103 104
112 113 114
109
108
107
110 111
115 116
106
105
118
117
1 2 3 4 5 6
12
11
10
1516
14
13
9
7 8
AKA00831
1
12 13 14 15 16 1718 19 20 2122 2324
2 3 4 5
6 7 8 9 10 11
1
12 13 14 15 16 1718 19 20 2122 2324
2 3 4 5
6 7 8 9 10 11
1
12 13 14 15 16 1718 19 20 2122 2324
2 3 4 5
6 7 8 9 10 11
2
8
7
6
5
4
3
11
21
20
19
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17
16
15
14
13
12
9
22
1
10
1 2 3 4
5 6 7
15
14
13
12
11
10
9
8
1 2
FUSIBLE LINK
1
C-309
8
C-317
5
4
16
4
5
7
8
10
8
80
B-11
C-317
C-301
C-309
C-01
C-04
C-33
103
90
91
4
15
5
16
J/C (CAN3)
C-01
J/C (CAN2)
C-04
7
20
6
19
9
C-301
8
21
C-33
20
C-33
ENGINE
CONTROL
MODULE
DATA LINK
CONNECTOR
C-125
ETACS-ECU
6
14
10A
RED
WHITE
ORANGE
YELLO
W
PINK
BLA
CK
BLA
CK
YELLO
W
-GREEN
YELLO
W
-BLUE
YELLO
W
-BLUE
VIOLET
GREEN
GREEN-
WHITE
GREEN-
WHITE
YELLO
W
GREEN-
RED
GREEN
34
5
CAN COMMUNICATION CIRCUIT
BLA
CK
ANALOG
INTERFACE
CIRCUIT
ANALOG
INTERFACE
CIRCUIT
INTERFACE
CIRCUIT
INTERFACE
CIRCUIT
CAN DRIVE
CIRCUIT
CAN DRIVE
CIRCUIT
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-751
.
CIRCUIT OPERATION
• Battery voltage is applied to the diagnosis con-
nector (terminal No. 16).
• The diagnosis connector (terminal No. 4 and No.
5) is grounded to the vehicle body.
.
COMMENT
• When the communication between M.U.T.-III and
ECM is impossible, it can be suspected that the
CAN bus line, power supply circuit of the diagno-
sis connector, and/or grounding circuit are defec-
tive.
• Communication can not be achieved either, if a
wrong vehicle type is selected on M.U.T.-III.
.
AK700435
AB
Data link connector
Brakepedal
C-125 (B)
Connector: C-125
AK900599
Connector: C-01
C-01
AB
AK700402AB
ECM
B-11 (GR)
Connector: B-11
AK900598
Connector: C-33
C-33
AB
AK700443AB
ETACS-ECU
C-317
Connectors: C-301, C-309 and C-317
C-301
C-309 (B)
AK900600
Connector: C-04
C-04
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-752
TROUBLESHOOTING HINTS (The most
likely causes for this case:)
• Malfunction of the data link connector.
• Open/short circuit or poor contact in the data link
connector.
• Malfunction of the CAN communication.
• Malfunction of the scan tool.
• Malfunction of the ECM.
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (M.U.T.-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
STEP 1. Check the vehicle communication interface (V.C.I.)
MB991824 operations.
(1) Connect the Scan tool to the data link connector.
(2) When the power of V.C.I. is turned to ON, the indicator lamp
of the V.C.I. illuminates in green.
• The indicator lamp of the V.C.I. illuminates in green.
Q: Is the indicator lamp of the V.C.I. illuminates in green?
YES : Go to Step 2.
NO : Use scan tool, perform CAN bus line diagnosis.
STEP 2. Measure the battery positive voltage.
(1) Measure the battery positive voltage during cranking.
• The voltage should be 8 volts or more.
Q: Is the measured voltage 8 volts or more?
YES : Go to Step 3.
NO : Check the battery. Refer to GROUP 54A, Battery
−
On-vehicle Service
− Battery Check
. Then
confirm that the malfunction symptom is eliminated.
AK700568AB
MB991824
MB991827
MB991910
Data link
connector
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