Mitsubishi Galant 9G. Manual — part 674
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-138
STEP 4. Check the continuity at engine coolant
temperature sensor harness side connector B-104.
(1) Disconnect the connector B-104 and measure at the
harness side.
(2) Check for the continuity between terminal No. 2 and
ground.
• Should be less than 2 ohms.
Q: Does continuity exist?
YES : Go to Step 7.
NO : Go to Step 5.
STEP 5. Check harness connector B-21 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 9.
AK303815
1
2
AB
CONNECTOR: B-104
B-104 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK000235
B-104 HARNESS
CONNECTOR:
COMPONENT SIDE
1
2
AQ
AK303018
55
56
54 53 52 51
57
62 61 60 59 58
63
69 68 67 66 65 64
70
75 74 73 72 71
76
82 81 80 79 78 77
83
CONNECTOR: B-21
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
B-21 (B)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-139
STEP 6. Check for harness damage between engine
coolant temperature sensor connector B-104 (terminal No.
2) and PCM connector B-21 (terminal No. 69).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 9.
NO : Repair it. Then go to Step 9.
AK303815
1
2
AB
CONNECTOR: B-104
B-104 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AK303018
55
56
54 53 52 51
57
62 61 60 59 58
63
69 68 67 66 65 64
70
75 74 73 72 71
76
82 81 80 79 78 77
83
CONNECTOR: B-21
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
B-21 (B)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-140
STEP 7. Check harness connector B-22 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 8.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 9.
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) <2.4L ENGINE>
13A-141
STEP 8. Check for harness damage between engine
coolant temperature sensor connector B-104 (terminal No.
1) and PCM connector B-22 (terminal No. 93).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 9.
NO : Repair it. Then go to Step 9.
STEP 9. 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 −
(2) Check the diagnostic trouble code (DTC).
Q: Is DTC P0116 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK303815
1
2
AB
CONNECTOR: B-104
B-104 (B)
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
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