Mitsubishi Montero Sport (2004+). Manual — part 209
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-249
STEP 3. Check connector E-47 at right bank heated oxygen
sensor (rear) and connector C-91 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 5.
AK200492
1
2
3
4
E-47(GR)
AB
CONNECTOR: E-47
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
AK104028
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
AB
CONNECTOR: C-91
C-91(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-250
STEP 4. Check for short circuit to ground between right
bank heated oxygen sensor (rear) connector E-47 (terminal
No. 4) and PCM connector C-91 (terminal No. 74).
NOTE: Check harness after checking intermediate connector,
C-79 and E-45. If intermediate connector is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion
.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 5.
NO : Repair it. Then go to Step 5.
AK200492
1
2
3
4
E-47(GR)
AB
CONNECTOR: E-47
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
AK104028
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
AB
CONNECTOR: C-91
C-91(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-251
STEP 5. 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 P0137 set?
YES : Repeat the troubleshooting.
NO : The procedure is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-252
DTC P0138: Heated Oxygen Sensor Circuit High Voltage (bank 1 sensor 2)
AK000458
Right Bank Heated Oxygen Sensor (rear) Circuit
1 2
3 4
BLA
CK
BLA
CK
BLA
CK
BLA
CK
WHITE
BLA
CK
BLA
CK
BLA
CK
WHITE
WHITE
BLA
CK-RED
BLA
CK-RED
POWERTRAIN CONTROL MODULE (PCM)
1
10
15
2
11
3
12
4
13 14
5
16
6
17
7
18
8
19
9
20
E-44
E-47
MU802665
74
57
20
2
11
20
12
4
5
13
4
2
3
1
C-91
C-90
FROM MFI RELAY
TO PCM
RIGHT BANK HEATED
OXYGEN SENSOR (REAR)
1
10
15
2
11
3
12
4
13 14
5
16
6
17
7
18
8
19
9
20
E-45
E-45
47
41
42 43
48 49 50 51 52 53 54 55 56 57
46
45
44
58
59
60 61 62 63
64 65 66
C-90
(MU803781)
1
10
2 3 4 5 6 7 8 9
11
12 13 14 15 16 17 18 19 20 21 22
23 24 25 26 27 28 29 30 31 32 33
C-71
71
76
77
72 73 74
75
79 80
78
81
87 88
89
91
90
92
97
98
82
93
83
94
84 85
95
86
96
C-91
(MU803782)
6
10
2
7
8
3 4 5
9
11 12 13
1
C-79
MU801553
JOINT
CONNECTOR (4)
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