Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 212
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-47
STEP 12. Check the ground voltage at barometric pressure
sensor connector B-14 by backprobing.
(1) Do not disconnect the connector B-14.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 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 voltage normal?
YES : Go to Step 15.
NO : Go to Step 13.
STEP 13. Check connector B-14 at the barometric pressure
sensor and connector C-58 at ECM <M/T> or connector C-
55 at PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 14.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection (
). Then go to Step 18.
AKX01517
B-14 CONNECTOR
HARNESS
SIDE VIEW
1 2 3 4 5 6 7
AC
ACX02480
CONNECTOR : B-14
AF
BAROMETRIC
PRESSURE
SENSOR
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-48
STEP 14. Check for harness damage between barometric
pressure sensor connector B-14 terminal 5 and ECM
connector C-58 terminal 49 <M/T> or PCM connector C-55
terminal 57 <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 18.
NO : Repair it. Then go to Step 18.
STEP 15. Check connector B-14 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.
STEP 16. Check connector C-58 at ECM <M/T> or
connector C-55 at PCM <A/T> 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.
ACX02480
CONNECTOR : B-14
AF
BAROMETRIC
PRESSURE
SENSOR
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
ACX02480
CONNECTOR : B-14
AF
BAROMETRIC
PRESSURE
SENSOR
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-49
STEP 17. Check for short circuit to ground and harness
damage between barometric pressure sensor connector B-
14 terminal 2 and ECM connector C-58 terminal 51 <M/T>
or PCM connector C-55 terminal 55 <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the volume air flow sensor. Then go to Step
18.
NO : Repair it. Then go to Step 18.
STEP 18. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to
, Procedure 6
−
Other Monitor.
(2) Check the diagnostic trouble code (DTC).
Q: Is the DTC P0107 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
ACX02480
CONNECTOR : B-14
AF
BAROMETRIC
PRESSURE
SENSOR
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-50
DTC P0108: Barometric Pressure Circuit High Input
CIRCUIT OPERATION
•
A 5-volt voltage is supplied to the barometric
pressure sensor power terminal (terminal 1) from
the ECM (terminal 42) <M/T> or PCM (terminal
46) <A/T>. The ground terminal (terminal 5) is
grounded with ECM (terminal 49) <M/T> or PCM
(terminal 57) <A/T>.
•
A voltage that is proportional to the atmospheric
pressure is sent to the ECM (terminal 51) <M/T>
or PCM (terminal 55) <A/T> from the barometric
pressure sensor output terminal (terminal 2).
AK000686
7
4 5 6
1 2 3
GREEN-YELLO
W
GREEN-WHITE
BLA
CK
ENGINE CONTROL
MODULE(ECM)<M/T>
OR
POWERTRAIN CONTROL
MODULE(PCM)<A/T>
5V
B-14
BAROMETRIC PRESSURE SENSOR
(INCORPORATED IN VOLUME AIR
FLOW SENSOR)
1
2
5
42<M/T>
46<A/T>
51<M/T>
55<A/T>
49<M/T>
57<A/T>
65
43
50
42
49
41
48
60 61
64
46 47
58 59
67 68
45
56
66
52
51
44
53
62
54
63
57
55
C-58<M/T>
(MU803782)
C-55<A/T>
(MU803781)
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
ACX02480
CONNECTOR : B-14
AF
BAROMETRIC
PRESSURE
SENSOR
AK000225
CONNECTOR : C-58<M/T>, C-55<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AI
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