Mitsubishi Galant 9G. Manual — part 1097
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-688
DTC P0443: Evaporative Emission Control Evaporative Emission Control System Purge Control Valve
Circuit
1 2
1
2
3
4
121 122 123 124 125 126 127
128 129 130 131 132 133
134 135 136 137 138 139 140
141 142 143 144 145 146
147 148 149 150 151 152 153
AK400892
RED-
WHITE
RED-
WHITE
BLUE
RED
MFI RELAY
BATTERY
149
2
4
B-17X
1
3
1
2
POWERTRAIN
CONTROL
MODULE (PCM)
EVAPORATIVE EMISSION
PURGE SOLENOID
Evaporative Emission Purge Solenoid Circuit
B-05
MU802779
B-23
TO PCM
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-689
.
CIRCUIT OPERATION
• The evaporative emission purge solenoid power
is supplied from the MFI relay (terminal No. 4).
• The PCM controls ground evaporative emission
purge solenoid by turning the power transistor in
the PCM "ON" and "OFF".
.
TECHNICAL DESCRIPTION
• To judge if there is open circuit in the evaporative
emission purge solenoid drive circuit, the PCM
measures the surge voltage of the evaporative
emission ventilation solenoid coil.
.
DESCRIPTIONS OF MONITOR METHODS
Off-surge does not occur after solenoid is operated
from on to off.
.
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
.
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
AK303014
CONNECTOR: B-17X
MFI RELAY
MFI RELAY
FRONT OF VEHICLE
B-17X
AB
AK303026
EVAPORATIVE
EMISSION PURGE
SOLENOID
CONNECTOR: B-05
B-05 (B)
AB
AK303059
CONNECTOR: B-23
PCM
AB
AIR CLEANER
B-23
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-690
DTC SET CONDITIONS
Logic Flow Chart
.
Check Conditions
• Engine is being cranked.
• Battery positive voltage is between 10 and 16.5
volts.
Judgment Criteria
• The evaporative emission purge solenoid coil
surge voltage (battery positive voltage + 2 volts)
is not detected for 0.2 second.
• The PCM monitors for this condition once during
the drive cycle.
.
Check Conditions
• Battery positive voltage is between 10 and 16.5
volts.
• ON duty cycle of the evaporative emission purge
solenoid is between 10 and 90 percent.
• Evaporative emission ventilation solenoid is off.
• More than 1 second has elapsed after the above
mentioned conditions have been met.
Judgment Criteria
• The evaporative emission purge solenoid coil
surge voltage (battery positive voltage + 2 volts)
is not detected for 1 second after the evaporative
emission purge solenoid is turned off.
.
OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function
− OBD-II Drive Cycle −
Procedure 6
.
.
TROUBLESHOOTING HINTS (The most
likely causes for this code to be set are: )
• Evaporative emission purge solenoid failed.
• Open or shorted evaporative emission purge
solenoid circuit, harness damage, or connector
damage.
• PCM failed.
MONITORING
CONDITIONS
NO
NO
YES
YES
GOOD
MALFUNCTION
WAS SURGE VOLTAGE
(> VB+2V) DETECTED?
START
END
AK302405
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.8L ENGINE>
13B-691
DIAGNOSIS
Required Special Tools:
• MB991958: Scan tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
• MB991923: Power Plant ECU Check Harness
STEP 1. Using scan tool MB991958, check actuator test
item 08: Evaporative Emission Purge Solenoid.
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) 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.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points
− How to
Cope with Intermittent Malfunctions
.
NO : Go to Step 2.
STEP 2 Check harness connector B-05 at the evaporative
emission purge solenoid for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
. Then go to Step 12.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
1
2
AK303142
CONNECTOR: B-05
B-05 (B)
HARNESS
CONNECTOR:
COMPONENT SIDE
AB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст