Mitsubishi Galant (2004+). Manual — part 808
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-49
STEP 7. Check for harness damage between mass airflow
sensor connector B-10 (terminal No. 3) and PCM connector
B-22 (terminal No. 108).
Q: Is the harness wire in good condition?
YES : Go to Step 8.
NO : Repair it. Then go to Step 9.
STEP 8. Replace the mass airflow sensor.
(1) Replace the mass airflow sensor.
(2) Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic Function
− OBD-II Drive Cycle − Procedure 6 −
Other Monitor
(3) Check the diagnostic trouble code (DTC).
Q: Is DTC P0101 set?
YES : Replace the PCM. Then go to Step 9.
NO : The inspection is complete.
AK303805
2
1
3
4
AB
CONNECTOR: B-10
B-10 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
AK303016
104
96
94
95
93 92 91
99 98 97
103 102 101 100
108 107 106 105
113 112 111 110 109
CONNECTOR: B-22
B-22 (B)
PCM
AB
HARNESS CONNECTOR:
COMPONENT SIDE
AIR CLEANER
AK303805
2
1
3
4
AB
CONNECTOR: B-10
B-10 (GR)
HARNESS CONNECTOR:
COMPONENT SIDE
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-50
STEP 9. 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 P0101 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-51
DTC P0102: Mass Airflow Circuit Low Input
CAUTION
If DTC P0102 has been set, TCL related DTC
U1120 is also set. After P0102 has been diag-
nosed, don't forget to erase DTC U1120.
1
2
3
4
1
2
3 4
52
51
53 54 55 56
57
58 59 60 61 62
63
64 65 66 67 68 69
70
71 72 73 74 75
76
77 78 79 80 81 82
83
100
99
92
91
93 94 95
96 97 98
101 102 103 104
105 106 107 108
109 110 111 112 113
AK303801
RED
WHITE-GREEN
BLA
CK
RED-
WHITE
RED-
WHITE
B-10
B-17X
MFI
RELAY
BATTERY
MASS AIRFLOW
SENSOR
HET
SENSITIZING
RESISTANCE
POWERTRAIN CONTROL
MODULE (PCM)
108
3
69
2
1
2
4
4
3
Mass Airflow Sensor Circuit
B-21
B-22
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>
13A-52
.
CIRCUIT OPERATION
• The mass airflow sensor power is supplied from
the MFI relay (terminal No. 4), and the ground is
provided on the PCM (terminal No. 69).
• A voltage that is according to the mass airflow
rate is sent to the PCM (terminal No. 108) from
the mass airflow sensor output terminal (terminal
No. 3).
.
TECHNICAL DESCRIPTION
• While the engine is running, the mass airflow
sensor outputs voltage which corresponds to the
mass airflow rate.
• The PCM checks whether the voltage output by
the mass airflow sensor while the engine is run-
ning is within a specified range.
.
DESCRIPTIONS OF MONITOR METHODS
Mass airflow sensor output voltage is out of specified
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
.
AK303802AB
CONNECTOR: B-10
MASS AIRFLOW SENSOR
(WITH BUILT-IN INTAKE AIR
TEMPERATURE SENSOR)
B-10 (GR)
AK303013
CONNECTORS: B-21, B-22
PCM
AB
AIR CLEANER
B-22 (B)
B-21 (B)
AK303803AB
CONNECTOR: B-17X
MFI RELAY
B-17X
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст