Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 85
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-39
STEP 3. Check connector B-14 at volume air flow sensor
and connector C-49 at ECM <M/T> or connector C-50 at
PCM <A/T> for damage.
Q: Is the connector in good condition?
YES : Go to Step 4.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection (
). Then go to Step 9.
STEP 4. Check for short circuit to ground between volume
air flow sensor connector B-14 terminal 7 and ECM
connector C-49 terminal 19 <M/T> or PCM connector C-50
terminal 19 <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the volume air flow sensor. Then go to Step
9.
NO : Repair it. Then go to Step 9.
ACX02480
CONNECTOR : B-14
AC
VOLUME AIR
FLOW SENSOR
AK000280
C-49,C-50
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-49<M/T>,C-50<A/T>
BC
ACX02480
CONNECTOR : B-14
AC
VOLUME AIR
FLOW SENSOR
AK000280
C-49,C-50
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-49<M/T>,C-50<A/T>
BC
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-40
STEP 5. Check the reset signal voltage at volume air flow
sensor connector B-14 by backprobing.
(1) Do not disconnect the connector B-14.
(2) Start the engine and run at idle.
(3) Measure the voltage between terminal 7 and ground by
backprobing.
•
When the engine idling, voltage should be 1.0 volt or
less.
•
When the engine speed is 3000r/min, voltage should be
between 6.0 and 9.0 volts.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the voltage normal?
YES : Go to Step 8.
NO : Go to Step 6.
STEP 6. Check connector B-14 at volume air flow sensor
and connector C-49 at ECM <M/T> or connector C-50 at
PCM <A/T> 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 9.
AKX01515 AC
B-14 CONNECTOR
HARNESS
SIDE VIEW
1 2 3 4 5 6 7
ACX02480
CONNECTOR : B-14
AC
VOLUME AIR
FLOW SENSOR
AK000280
C-49,C-50
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-49<M/T>,C-50<A/T>
BC
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-41
STEP 7. Check for open circuit and harness damage
between volume air flow sensor connector B-14 terminal 7
and ECM connector C-49 terminal 19 <M/T> or PCM
connector C-50 terminal 19 <A/T>.
Q: Is the harness wire in good condition?
YES : Replace the ECM or PCM. Then go to Step 9.
NO : Repair it. Then go to Step 9.
STEP 8. Replace the volume air flow sensor.
(1) Replace the volume air flow sensor.
(2) Carry out a test drive with the drive cycle pattern. Refer to,
Procedure 6
−
Other Monitor (
).
(3) Check the diagnostic trouble code (DTC).
Q: Is the DTC P0103 is output?
YES : Replace the ECM or PCM. Then go to Step 9.
NO : The inspection is complete.
STEP 9. 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 P0103 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
ACX02480
CONNECTOR : B-14
AC
VOLUME AIR
FLOW SENSOR
AK000280
C-49,C-50
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-49<M/T>,C-50<A/T>
BC
ACX02480
CONNECTOR : B-14
AC
VOLUME AIR
FLOW SENSOR
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-42
DTC P0107: Barometric Pressure Circuit Low Input
CIRCUIT OPERATION
•
A 5-volt voltage is supplied to the barometric
pressure sensor power terminal (terminal 1) from
the ECM (terminal 81) <M/T> or PCM (terminal
46) <A/T>. The ground terminal (terminal 5) is
grounded with ECM (terminal 92) <M/T> or PCM
(terminal 57) <A/T>.
•
A voltage that is proportional to the atmospheric
pressure is sent to the ECM (terminal 85) <M/T>
or PCM (terminal 55) <A/T> from the barometric
pressure sensor output terminal (terminal 2).
AK000653
7
4 5 6
1 2 3
GREEN-YELLO
W
GREEN-WHITE
BLA
CK
C-54<A/T>
(MU803781)
C-60<M/T>
(MU803772)
ENGINE CONTROL
MODULE(ECM)<M/T>
OR
POWERTRAIN CONTROL
MODULE(PCM)<A/T>
81<M/T>
46<A/T>
5V
85<M/T>
55<A/T>
92<M/T>
57<A/T>
B-14
BAROMETRIC PRESSURE SENSOR
(INCORPORATED IN VOLUME AIR
FLOW SENSOR)
1
2
5
82
78
81
80
89 90 91 92
79
87
71
74
73
72
76
75
77
85
88
83 84
86
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
AK000280
C-54
C-60
ECM<M/T>
OR
PCM<A/T>
CONNECTORS:C-60<M/T>,C-54<A/T>
BB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст