Mitsubishi Montero Sport (2004+). Manual — part 206
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-237
STEP 4. Check for open circuit 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, E-45. If intermediate connector is damaged, repair or
replace it. Refer to GROUP 00E, Harness Connector Inspec-
tion
. Then go to Step 11.
Q: Is the harness wire in good condition?
YES : Go to Step 5.
NO : Repair it. Then go to Step 11.
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-238
STEP 5. Using scan tool MB991958, check data list item 69:
Heated Oxygen Sensor Bank 1, Sensor 2 (right rear).
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Start the engine and run at idle.
(3) Set scan tool MB991958 to the data reading mode for item
69, Heated Oxygen Sensor Bank 1, Sensor 2 (right rear).
• Warm up the engine. When the engine is revved, the
output voltage should repeat 0 volt and 0.6 to 1.0 volt
alternately.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the sensor operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
NO : Replace the PCM. Then go to Step 11.
STEP 6. Check connector E-47 at right bank heated oxygen
sensor (rear) for damage.
Q: Is the connector in good condition?
YES : Go to Step 7.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
AK303629AB
MB991911
MB991827
MB991824
16-PIN
AK200492
1
2
3
4
E-47(GR)
AB
CONNECTOR: E-47
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-239
STEP 7. Check for continuity at right bank heated oxygen
sensor (rear) harness side connector E-47.
(1) Disconnect the connector E-47 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 10.
NO : Go to Step 8.
STEP 8. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 9.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 11.
AK200492
1
2
3
4
E-47(GR)
AB
CONNECTOR: E-47
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
AK000243AO
E-47 HARNESS
CONNECTOR:
COMPONENT SIDE
2 1
4 3
AK103762
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
AB
CONNECTOR: C-90
C-90(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-240
STEP 9. Check for open circuit between right bank heated
oxygen sensor (rear) connector E-47 (terminal No. 2) and
PCM connector C-90 (terminal No. 57).
NOTE: Check harness after checking intermediate connector
C-71, C-79 and E-45. If intermediate connectors are damaged,
repair or replace it. Refer to GROUP 00E, Harness Connector
Inspection
. Then go to Step 11.
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.
AK200492
1
2
3
4
E-47(GR)
AB
CONNECTOR: E-47
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
AK103762
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
AB
CONNECTOR: C-90
C-90(GR)
HARNESS CONNECTOR:
COMPONENT SIDE
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