Mitsubishi Montero Sport (2004+). Manual — part 325
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-713
STEP 7. Measure the ground voltage at barometric
pressure sensor connector A-01 by backprobing.
(1) Do not disconnect the connector A-01.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal No. 5 and ground by
backprobing.
• Voltage should be 0.5 volt or less.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage 0.5 volt or less?
YES : Go to Step 10.
NO : Go to Step 8.
STEP 8. Check connector A-01 at the barometric pressure
sensor and 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 12.
AK103913
3
4
5
1
2
6
7
CONNECTOR: A-01
A-01(B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
AKX01517
A-01 HARNESS
CONNECTOR:
HARNESS SIDE
1 2 3 4 5 6 7
AI
AK103913
3
4
5
1
2
6
7
CONNECTOR: A-01
A-01(B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
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-714
STEP 9. Check for open circuit between barometric
pressure sensor connector A-01 (terminal No. 5) and PCM
connector C-90 (terminal No. 57).
NOTE: Check harness after checking intermediate connector
C-71. If intermediate connector is damaged, repair or replace it.
Refer to GROUP 00E, Harness Connector Inspection
Then go to Step 12.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 12.
NO : Repair it. Then go to Step 12.
STEP 10. Check connector A-01 at barometric pressure
sensor for damage.
Q: Is the connector in good condition?
YES : Go to Step 11.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
AK103913
3
4
5
1
2
6
7
CONNECTOR: A-01
A-01(B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
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
AK103913
3
4
5
1
2
6
7
CONNECTOR: A-01
A-01(B)
AB
HARNESS
CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-715
STEP 11. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Replace the volume airflow sensor. Then go to Step
12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 12.
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 P2229 set?
YES : Repeat the troubleshooting.
NO : The procedure is complete.
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
Continue
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-716
13A
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Communication with Scan Tool Is Not Possible. (Comunication with All
Systems Is Not Possible.)
1
1
1
1
1
2 3
4 5
6 7 8
2 3 4 5 6 7 8
9
2 3
4 5 6 7
8 9 10
10
10 11 12
11 12 13 14 15 16
11 12 13 14 15 16
9
BL
ACK
BL
ACK
WHITE-
RED
RED
AK303391
Data Link Connector Circuit
BL
ACK
RED
-
BL
ACK
RED
-
BL
ACK
2
A-54X
MU801541
FUSIBLE LINK (8)
6
2
5
RELAY
BOX
C-69
JUNCTION
BLOCK
4
16
5
D-01
D-06
DATA LINK
CONNECTOR
D-06
D-01
AK200037AB
A-54X
CONNECTOR: A-54X
AK200038AB
CONNECTOR: C-69
DATA LINK
CONNECTOR
C-69(B)
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