Mitsubishi Eclipse. Manual — part 451
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-347
STEP 13. Check for short circuit to ground and harness
damage between left bank heated oxygen sensor (front)
connector B-24 (terminal No. 4) and ECM connector C-62
(terminal No. 71) <M/T> or PCM connector C-59 (terminal
No. 71) <A/T>.
Q: Is the harness wire in good condition?
YES : Go to Step 14.
NO : Repair it. Then go to Step 15.
AK300445
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97 96
100
89
78
71
90
76
77
75
72
79
CONNECTOR: C-62 <M/T>
C-62 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300424
1
2
3
4
LEFT BANK
HEATED OXYGEN
SENSOR (FRONT)
CONNECTOR: B-24
AB
B-24 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-348
AK300462
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
CONNECTOR: C-55 <A/T>
C-55 (GR)
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AK300748
65
43
50
42
49
41
48
60
61
64
46
47
58
59
67
68
45
56
66
52 51
44
53
62
54
63
57
55
CONNECTOR: C-58 <M/T>
AB
C-58 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-349
STEP 14. Check the left bank heated oxygen sensor (front).
(1) Disconnect the left bank heated oxygen sensor (front)
connector B-24 and connect test harness special tool,
MD998464, to the connector on the left bank heated oxygen
sensor (front) side.
(2) Warm up the engine until engine coolant 80
°C (176°F) or
higher.
CAUTION
Be very careful when connecting the jumper wires; incor-
rect connection can damage the left bank heated oxygen
sensor (front).
(3) Use the jumper wires to connect terminal 1 (red clip) to the
positive battery terminal and terminal 3 (blue clip) to the
negative battery terminal.
(4) Connect a digital volt meter between terminal 2 (black clip)
and terminal 4 (white clip).
(5) While repeatedly revving the engine, measure the left bank
heated oxygen sensor (front) output voltage.
Standard value: 0.6
− 1.0 volt
Q: Is the voltage between 0.6 and 1.0 volt?
YES : Replace the ECM or PCM. Then go to Step 15.
NO : Replace the left bank heated oxygen sensor (front).
Then go to Step 15.
STEP 15. 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 P0150 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK300424
1
2
3
4
LEFT BANK
HEATED OXYGEN
SENSOR (FRONT)
CONNECTOR: B-24
AB
B-24 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01625AC
BLUE
RED
BLACK
JUMPER
WIRES
WHITE
MD998464
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-350
DTC P0151: Heated Oxygen Sensor Circuit Low Voltage (bank 2, sensor 1)
AK000694
4
1 2
3
BL
ACK
BL
ACK
WHITE
B-24
MU802605
ENGINE CONTROL
MODULE (ECM) <M/T>
OR
POWERTRAIN CONTROL
MODULE (PCM) <A/T>
LEFT BANK HEATED OXYGEN
SENSOR (FRONT)
FROM MFI RELAY
TO ECM
OR PCM
1
2
3
4
49 <M/T>*1
57 <A/T>*3
71 <M/T>*2
71 <A/T>*4
NOTE
*1:ECM connector C-58 <M/T>
*2:ECM connector C-62 <M/T>
*3:PCM connector C-55 <A/T>
*4:PCM connector C-59 <A/T>
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
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97
96
100
89
78
71
90
76 77
75
72
79
97
C-62 <M/T>
(MU803783)
C-59 <A/T>
(MU803782)
65
43
50
42
49
41
48
60 61
64
46 47
58 59
67 68
45
56
66
52
51
44
53
62
54
63
57
55
C-58 <M/T>
(MU803782)
C-55 <A/T>
(MU803781)
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
Left Bank Heated Oxygen Sensor (front) Circuit
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