Mitsubishi Montero (2004+). Manual — part 183
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-219
STEP 8. Check harness connector D-132 at PCM for
damage.
Q: Is the harness 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 12.
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-220
STEP 9. Check for harness damage between MFI relay
connector B-22X (terminal No. 1) and right bank heated
oxygen sensor (front) connector B-07 (terminal No. 1).
Q: Is the harness wire in good condition?
YES : Go to Step 10.
NO : Repair it. Then go to Step 12.
AK200951
2 1
3
4
B-22X
AB
CONNECTOR: B-22X
HARNESS
CONNECTOR:
COMPONENT SIDE
AK201274
1
2
3
4
CONNECTOR: B-07
B-07(B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (FRONT)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-221
STEP 10. Check for harness damage between right bank
heated oxygen sensor (front) connector B-07 (terminal No.
3) and PCM connector D-132 (terminal No. 25).
Q: Is the harness wire in good condition?
YES : Go to Step 11.
NO : Repair it. Then go to Step 12.
STEP 11. Check the trouble symptoms.
(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 in the diagnostic trouble code (DTC).
Q: Is DTC P0135 set?
YES : Replace the PCM. Then go to Step 12.
NO : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
AK201274
1
2
3
4
CONNECTOR: B-07
B-07(B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
RIGHT BANK
HEATED OXYGEN
SENSOR (FRONT)
AK200938
2
3
4
5
6
7
8
9
1
10
14
15
16
17
18
19
20
21
22
23
24
25
26
27
11
12
13
AB
CONNECTOR: D-132
HARNESS CONNECTOR:
COMPONENT SIDE
PCM
D-132(GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-222
STEP 12. 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 P0135 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
DTC P0136: Heated Oxygen Sensor Circuit (bank 1, sensor 2)
WHITE
BL
ACK
BL
ACK
WHITE
BL
ACK
BL
ACK
BL
ACK
2
1
4 5 6
3
AK201133
TO PCM
FROM MFI RELAY
96
117
2
4
3
1
1
12
23 24 25 26
2
13
3
14
4
15
5
16
6
17
7
18
8
19
9
20 21 22
27 28 29 30 31 32 33
10 11
D-116
1
5
7 8
3 4
9 10
2
6
D-14
MU801335
E-112
RIGHT BANK
HEATED OXYGEN
SENSOR (REAR)
POWERTRAIN CONTROL
MODULE (PCM)
9
9
5
4
7
4
3
1 2
C-14
MU802665
Right Bank Heated Oxygen Sensor (rear) Circuit
9192
939495
96979899
100
105
113114
115116117
118119120
106
107108109
110111112
101102103
104
D-135
(MU803805)
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