Mitsubishi Eclipse. Manual — part 203
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-305
STEP 1. Check connector C-23 at heated oxygen sensor
(rear) and connector C-60 at ECM <M/T> or connector C-57
at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 2.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 3.
AK300405
2
1
6 5 4 3
AB
C-23
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: C-23
HARNESS
CONNECTOR:
HARNESS SIDE
AK300415
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
CONNECTOR: C-60 <M/T>
AB
C-60 (G)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-306
STEP 2. Check for short circuit to power supply between
heated oxygen sensor (rear) connector C-23 (terminal No.
3) and ECM connector C-60 (terminal No. 75) <M/T> or PCM
connector C-57 (terminal No. 73) <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 3.
NO : Repair it. Then go to Step 3.
AK300735
98
78
71
88
89
76
77
72
79
91
73
80
74
75
81
92
82
83
93
84
85
94
86
87
95
96
90
97
CONNECTOR: C-57 <A/T>
C-57 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300405
2
1
6 5 4 3
AB
C-23
HEATED OXYGEN
SENSOR (REAR)
CONNECTOR: C-23
HARNESS
CONNECTOR:
HARNESS SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-307
STEP 3. 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 P0138 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK300415
82
78
8180
89
90
91
92
79
87
71
74 73 72
76 75
77
85
88
83
84
86
CONNECTOR: C-60 <M/T>
AB
C-60 (G)
HARNESS CONNECTOR:
COMPONENT SIDE
AK300735
98
78
71
88
89
76
77
72
79
91
73
80
74
75
81
92
82
83
93
84
85
94
86
87
95
96
90
97
CONNECTOR: C-57 <A/T>
C-57 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-308
DTC P0139: Heated Oxygen Sensor Circuit Slow Response (sensor 2)
AK103266
BL
ACK
BL
UE
YELL
OW
FROM MFI RELAY
HEATED OXYGEN
SENSOR (REAR)
C-23
MU801448
TO ECM
OR PCM
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
75 <M/T>
73 <A/T>*2
92 <M/T>
57 <A/T>*1
C-60 <M/T>
(MU803772)
C-54 <A/T>
(MU803781)
C-57 <A/T>
(MU803782)
NOTE
*1:PCM connector C-54 <A/T>
*2:PCM connector C-57 <A/T>
5
6
4
3
1
2
3 4 5 6
98
78
71
88 89
76 77
72
79
91
73
80
74
75
81
92
82 83
93
84 85
94
86 87
95 96
90
97
82
78
81
80
89 90 91 92
79
87
71
74
73
72
76
75
77
85
88
83 84
86
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58 59
60 61 62 63
64 65 66
47
41
Heated Oxygen Sensor (rear) Circuit
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