Mitsubishi Outlander GS45X. Manual — part 742
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-791
STEP 3. Check the fuel pump relay.
(1) Remove the ETACS-ECU.
(2) Use jumper wires to connect C-317 ETACS-ECU terminal
No. 6 to the positive battery terminal and C-304
ETACS-ECU terminal No. 11 to the negative battery
terminal.
(3) Check for continuity between the C-307 ETACS-ECU
terminal No. 1 and C-314 ETACS-ECU terminal No. 1 while
connecting and disconnecting the jumper wire at the
negative battery terminal.
• Continuity (2 Ω or less) <Negative battery terminal con-
nected>
• Should be open loop. <Negative battery terminal discon-
nected>
(4) Install the ETACS-ECU.
Q: Is the measured resistance normal?
YES : Go to Step 4.
NO : Replace the ETACS-ECU. Then confirm that the
malfunction symptom is eliminated.
STEP 4. Check harness connector B-11 at ECM connector
for damage.
Q: Is the connector in good condition?
YES : Go to Step 5.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then confirm that the
malfunction symptom is eliminated.
1 2 3 4
5 6 7
8 9 10 11
131415
12
1 2
1 2
1
6
4
5
9
8
10 11
13
15
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12
16
7
2 3
AK703917AC
C-314
ETACS-ECU
side connector
C-307
ETACS-ECU
side connector
C-304
ETACS-ECU
side connector
C-317 ETACS-ECU
side connector
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-792
STEP 5. Measure the power supply voltage at ECM
connector B-11.
(1) Disconnect the connector B-11 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 96 and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 6.
NO : Repair harness wire between ETACS-ECU connector
C-304 (terminal No. 11) and ECM connector B-11
(terminal No. 96) because of open circuit or short
circuit to ground. Then confirm that the malfunction
symptom is eliminated.
STEP 6. Measure the power supply voltage at ETACS-ECU
connector C-307.
(1) Disconnect the connector C-307 and measure at the
harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 1 and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 8.
NO : Go to Step 7.
AK700221
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95 96 97 98 99
100 101 102 103 104
112 113 114
109
108
107
110 111
115 116
106
105
118
117
82 81 80 79 78 77 76 75 74 73 72 71
94 93 92 91 90 89 88 87 86 85 84 83
99 98 97 96 95
100
101
102
103
104
105
106
112
113
114
109 108
107
110
111
115
116
117
118
AB
B-11 harness
connector:
component side
1
2
AK604049 AB
C-307 harness
connector:
component side
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-793
STEP 7. Check harness connector A-33X at MFI relay
connector for damage.
Q: Is the connector in good condition?
YES : Repair harness wire between MFI relay connector
A-33X (terminal No. 2) and ETACS-ECU connector
C-307 (terminal No. 1) because of open circuit or
short circuit to ground. Then confirm that the
malfunction symptom is eliminated.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then confirm that the
malfunction symptom is eliminated.
STEP 8. Check harness connector D-20 at fuel pump
connector for damage.
Q: Is the connector in good condition?
YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then confirm that the
malfunction symptom is eliminated.
STEP 9. Check the fuel pump operation.
(1) Disconnect fuel pump connector D-20.
(2) Use jumper wires to connect fuel pump connector terminal
No. 5 to the positive battery terminal and terminal No. 4 to
the negative battery terminal.
• An operating sound of the fuel pump should be heard.
Q: Is the fuel pump operating properly?
YES : Go to Step 10.
NO : Replace the fuel pump. Then confirm that the
malfunction symptom is eliminated.
STEP 10. Check for continuity at fuel pump harness side
connector D-20.
(1) Disconnect the connector D-20 and measure at the harness
side.
(2) Check for the continuity between terminal No. 4 and
ground.
• Should be less than 2 ohms.
Q: Does continuity exist?
YES : Go to Step 11.
NO : Repair harness wire between fuel pump connector
D-20 (terminal No. 4) and ground because of open
circuit or harness damage. Then confirm that the
malfunction symptom is eliminated.
AK604050
1 2 3
4 5
AB
Fuel pump side
connector
AK700218
1
2
3
4
5
AB
D-20 harness connector:
component side
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-794
STEP 11. Measure the power supply voltage at fuel pump
connector D-20.
(1) Disconnect the connector D-20 and measure at the harness
side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 5 and ground.
• Voltage should be battery positive voltage.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is battery positive voltage (approximately 12 volts)
present?
YES : Go to Step 13.
NO : Go to Step 12.
STEP 12. Check for harness damage between ETACS-ECU
connector C-304 (terminal No. 11) and ECM connector B-11
(terminal No. 96)
Q: Is the harness wire in good condition?
YES : Replace the ECM. When the ECM is replaced,
register the ID code. Refer to GROUP 42B, Diagnosis
− ID Code Registration Judgment Table <Vehicles
with KOS>
P.42B-15
or GROUP 42C, Diagnosis
− ID
Codes Registration Judgment Table <Vehicles with
WCM>
P.42C-10
. Then confirm that the malfunction
symptom is eliminated.
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
STEP 13. Check harness connector A-33X at MFI relay
connector for damage.
Q: Is the connector in good condition?
YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
P.00E-2
. Then confirm that the
malfunction symptom is eliminated.
STEP 14. Check for harness damage between MFI relay
connector A-33X (terminal No. 2) and ETACS-ECU
connector C-307 (terminal No. 1).
Q: Is the harness wire in good condition?
YES : Repair harness wire between ETACS-ECU connector
C-314 (terminal No. 1) and fuel pump connector
(terminal No. 5) because of harness damage. Then
confirm that the malfunction symptom is eliminated.
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
AK704313
1
2
3
4
5
AB
D-20 harness connector:
component side
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