Mitsubishi Eclipse. Manual — part 245
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-473
STEP 2. Using scan tool MB991958, check data list item 73:
Fuel Tank Differential Pressure Sensor.
(1) Turn the ignition switch to the "ON" position.
(2) Remove the fuel cap.
(3) Set scan tool MB991958 to the data reading mode for item
73, Fuel Tank Differential Pressure Sensor.
• The fuel tank differential pressures should be −1.5 to 1.5
kPa (
−0.44 to 0.44 in.Hg).
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : Go to Step 3.
NO : Refer to, DTC P0451 - Evaporative Emission Control
System Pressure Sensor Range/Performance
STEP 3. Using scan tool MB991958, check actuator test
item 08: Evaporative Emission Purge Solenoid.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the actuator test mode for item
08, Evaporative emission purge solenoid.
• An operation sound should be heard and vibration
should be felt when the evaporative emission purge
solenoid is operated.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : Go to Step 4.
NO : Replace the evaporative emission purge solenoid.
Then go to Step 5.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-474
STEP 4. Using scan tool MB991958, check actuator test
item 29: Evaporative Emission Ventilation Solenoid.
(1) Turn the ignition switch to the "ON" position.
(2) Set scan tool MB991958 to the actuator test mode for item
29, Evaporative emission ventilation solenoid.
• An operation sound should be heard and vibration
should be felt when the evaporative emission ventilation
solenoid is operated.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : Repair or replace the vent hose and air filter. Then go
to Step 5.
NO : Replace the evaporative emission ventilation
solenoid. Then go to Step 5.
STEP 5 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 1 −
Evaporative Emission System Leak Monitor
(2) Read the diagnostic trouble code.
Q: Is DTC P0441 set?
YES : Go to Step 1.
NO : This diagnosis is complete.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-475
DTC P0442: Evaporative Emission Control System Leak Detected (Small Leak)
.
TECHNICAL DESCRIPTION
• To judge if there is leak in the fuel system, ECM
<M/T> or PCM <A/T> measure the change of the
pressure inside the fuel tank.
• The ECM <M/T> or PCM <A/T> turns on the
evaporative emission ventilation solenoid to shot
off the evaporative emission canister outlet port.
AC001943AB
A
B
C
EVAPORATIVE EMISSION
PURGE SOLENOID
EVAPORATIVE
EMISSION CANISTER
EVAPORATIVE
EMISSION
VENTILATION
SOLENOID
FUEL TANK
CHECK VALVE A
CHECK
VALVE B
INTAKE MANIFOLD
SYSTEM DIAGRAM
D
E
F
G
I
H
L
N
M
K
J
O
P
CHAMBER
AC000183AB
EVAPORATIVE EMISSION CANISTER
FUEL TANK
AC000182
EVAPORATIVE EMISSION
PURGE SOLENOID
AB
AC002035AB
EVAPORATIVE EMISSION
VENTILATION SOLENOID
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L>
13A-476
• Then the evaporative emission purge solenoid is
driven to set the fuel system into a negative pres-
sure.
• When the fuel system develops a vacuum of 2
kPa (0.29 psi), the evaporative emission purge
solenoid is turned "off" and the fuel system vac-
uum is maintained at 2 kPa (0.29 psi).
• The ECM <M/T> or PCM <A/T> determines if
there is leak in the fuel system by measuring the
change of vacuum inside the fuel tank.
• The test is stopped when fuel vapor pressure is
judged as too high.
.
DESCRIPTIONS OF MONITOR METHODS
• Measure reverting pressure after depressurizing
by intake manifold negative pressure and detect
malfunction if reverting pressure rises largely.
.
MONITOR EXECUTION
• Once per driving cycle.
.
MONITOR EXECUTION CONDITIONS (Other
Monitor and Sensor)
Other Monitor (There is no temporary DTC stored
in memory for the item monitored below)
• Evaporative emission purge solenoid monitor
• Evaporative emission purge system monitor
• Fuel tank differential pressure sensor monitor
• Evaporative emission ventilation solenoid monitor
• Fuel level sensor monitor
• Fuel temperature sensor monitor
Sensor (The sensors below are determined to be
normal)
• Volume airflow sensor
• Barometric pressure sensor
• Intake air temperature sensor
• Engine coolant temperature sensor
.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст