Mitsubishi Galant (2004+). Manual — part 1162
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-341
STEP 6. Check harness connector B-27, B-26, B-30 at left
bank injector for damage.
(1) Remove the intake manifold.
(2) Check the left bank injector connector for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
STEP 7. Check the left bank injector.
(1) Disconnect each left bank injector connector.
(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 8.
NO : Replace the injector. Then go to Step 12.
AK303075
M
1
2
CONNECTOR: B-26, B-27, B-30
B-30 (GR)
B-27 (GR)
B-26 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AB
AK303075
M
1
2
CONNECTOR: B-26, B-27, B-30
B-30 (GR)
B-27 (GR)
B-26 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AB
AK000559
2
1
INJECTOR SIDE
CONNECTOR
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-342
STEP 8. Check harness connector B-22, B-23 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
AK303057
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
127 126 125 124 123 122 121
133 132 131 130 129 128
140 139 138 137 136 135 134
146 145 144 143 142 141
153 152 151 150 149 148 147
CONNECTORS: B-22, B-23
B-22 (B)
AB
B-23
B-22 HARNESS CONNECTOR:
COMPONENT SIDE
B-23 HARNESS CONNECTOR:
COMPONENT SIDE
PCM
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-343
STEP 9. Check for harness damage between left bank
heated oxygen sensor (front) connector B-25 (terminal No.
4) and PCM connector B-22 (terminal No. 91).
Q: Is the harness wire in good condition?
YES : Go to Step 10.
NO : Repair it. Then go to Step 12.
AK303071
1
2
3
4
LEFT BANK
HEATED OXYGEN
SENSOR (FRONT)
CONNECTOR: B-25
B-25 (B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-344
STEP 10. Check for harness damage between left bank
injector connector and PCM connector.
a. Check the harness wire between left bank injector connec-
tor B-30 (terminal No. 2) and PCM connector B-23 (terminal
No. 146) at No. 2 cylinder.
b. Check the harness wire between left bank injector connec-
tor B-27 (terminal No. 2) and PCM connector B-23 (terminal
No. 139) at No. 4 cylinder.
c. Check the harness wire between left bank injector connec-
tor B-26 (terminal No. 2) and PCM connector B-23 (terminal
No. 127) at No. 6 cylinder.
Q: Is the harness wire in good condition?
YES : Go to Step 11.
NO : Repair it. Then go to Step 12.
STEP 11. Check the fuel pressure.
Refer to On-vehicle Service
− Fuel Pressure Test
Q: Is the fuel pressure normal?
YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
STEP 12. 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 − Procedure 6 −
Other Monitor
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0154 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK303075
M
1
2
CONNECTOR: B-26, B-27, B-30
B-30 (GR)
B-27 (GR)
B-26 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AB
127 126 125 124 123 122 121
133 132 131 130 129 128
140 139 138 137 136 135 134
146 145 144 143 142 141
153 152 151 150 149 148 147
AK303058
HARNESS CONNECTOR:
COMPONENT SIDE
CONNECTOR: B-23
B-23
PCM
AB
AIR CLEANER
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