Mitsubishi Montero Sport (2004+). Manual — part 323
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-705
STEP 14. Check for harness damage 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 18.
Q: Is the harness wire in good condition?
YES : Replace the PCM. Then go to Step 18.
NO : Repair it. Then go to Step 18.
STEP 15. Check connector A-01 at barometric pressure
sensor for damage.
Q: Is the connector in good condition?
YES : Go to Step 16.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 18.
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-706
STEP 16. Check connector C-90 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 17.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then go to Step 18.
STEP 17. Check for short circuit to ground and harness
damage between barometric pressure sensor connector
A-01 (terminal No. 2) and PCM connector C-90 (terminal
No. 55).
Q: Is the harness wire in good condition?
YES : Replace the volume airflow sensor. Then go to Step
18.
NO : Repair it. Then go to Step 18.
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
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-707
STEP 18. 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 P2228 set?
YES : Repeat the troubleshooting.
NO : The procedure is complete.
DTC P2229: Barometric Pressure Circuit High Input
GREEN-
YELL
OW
AK302268
Barometric Pressure Sensor Circuit
PINK
BL
ACK
BL
ACK
5V
POWERTRAIN CONTROL MODULE (PCM)
46
1
55
57
15
2
5
12
BAROMETRIC PRESSURE SENSOR
(INCORPORATED IN VOLUME
AIRFLOW SENSOR)
1 2 3 4 5 6 7
A-01
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
JOINT
CONNEC-
TOR (4)
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)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI)
13A-708
.
CIRCUIT OPERATION
• A 5-volt voltage is supplied to the barometric
pressure sensor power terminal (terminal No. 1)
from the PCM (terminal No. 46). The ground ter-
minal (terminal No. 5) is grounded with PCM (ter-
minal No. 57).
• A voltage that is proportional to the atmospheric
pressure is sent to the PCM (terminal No. 55)
from the barometric pressure sensor output ter-
minal (terminal No. 2).
.
TECHNICAL DESCRIPTION
• The barometric pressure sensor outputs a volt-
age which corresponds to the barometric pres-
sure.
• The PCM checks whether this voltage is within a
specified range.
.
DESCRIPTIONS OF MONITOR METHODS
Barometric pressure sensor output voltage is out of
reasonable barometric pressure range.
.
MONITOR EXECUTION
Continuous
.
MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Not applicable
Sensor (The sensor below is determined to be
normal)
• Not applicable
.
AK103908
CONNECTOR: A-01
BAROMETRIC
PRESSURE
SENSOR
A-01(B)
AC
AK103912AB
CONNECTOR: C-71
C-71
AK103738AC
CONNECTOR: C-90
PCM
C-90(GR)
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