Mitsubishi Galant 9G. Manual — part 958
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-132
STEP 6. Check harness connector B-22 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Repair harness wire between intake air temperature
sensor connector B-10 (terminal No. 1) and PCM
connector B-22 (terminal No. 107) because of open
circuit. Then go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 11.
STEP 7. Check harness connector B-22 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Replace the PCM. Then go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 11.
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
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-133
STEP 8. Check the continuity at intake air temperature
sensor harness side connector B-10.
(1) Disconnect the connector B-10 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 : Replace the PCM. Then go to Step 11.
NO : Go to Step 9.
STEP 9. Check harness connector B-21 at PCM for
damage.
Q: Is the harness connector in good condition?
YES : Go to Step 10.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 11.
AK303015
2
1
3
4
AB
B-10 (GR)
CONNECTOR: B-10
HARNESS
CONNECTOR:
COMPONENT SIDE
2
1
3
4
AK303019
B-10 HARNESS
CONNECTOR:
COMPONENT SIDE
AB
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) <3.8L ENGINE>
13B-134
STEP 10. Check for open circuit between intake air
temperature sensor connector B-10 (terminal No. 4) and
PCM connector B-21 (terminal No. 69).
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 11.
NO : Repair it. Then go to Step 11.
STEP 11. 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 P0113 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK303015
2
1
3
4
AB
B-10 (GR)
CONNECTOR: B-10
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) <3.8L ENGINE>
13B-135
DTC P0116: Engine Coolant Temperature Circuit Range/Performance Problem
CAUTION
If DTC P0116 has been set, TCL related DTC
U1120 is also set. After P0116 has been diag-
nosed, don't forget to erase DTC U1120.
YELLO
W
-GREEN
BLA
CK
AK302836
ENGINE COOLANT
TEMPERATURE SENSOR
POWERTRAIN CONTROL MODULE(PCM)
5 V
93
2
B-104
(MU802406)
69
1
Engine Coolant Temperature Sensor Circuit
1 2
B-21
B-22
52
51
53 54 55 56
57
58 59 60 61 62
63
64 65 66 67 68 69
70
71 72 73 74 75
76
77 78 79 80 81 82
83
100
99
92
91
93 94 95
96 97 98
101 102 103 104
105 106 107 108
109 110 111 112 113
AK303036
CONNECTOR: B-104
AB
B-104 (B)
ENGINE
COOLANT
TEMPERATURE
SENSOR
THROTTLE
BODY
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