Mitsubishi Galant. Manual — part 218
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-97
STEP 5. Check connector C-41 at PCM for damage.
Q: Is the connector in good condition?
YES : Go to Step 6.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection(
). Then go to Step 9.
STEP 6. Check for harness damage between throttle
position sensor connector B-05 terminal 4 and PCM
connector C-40 terminal 46.
Q: Is the harness wire in good condition?
YES : Go to Step 7.
NO : Repair it. Then go to Step 9.
AK000280
CONNECTOR : C-41
PCM
AY
ACX02484 AH
THROTTLE
POSITION
SENSOR
CONNECTOR:B-05
AK000280
CONNECTOR : C-40
PCM
AV
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-98
STEP 7. Check for harness damage between throttle
position sensor connector B-05 terminal 3 and PCM
connector C-41 terminal 78.
Q: Is the harness wire in good condition?
YES : Go to Step 8.
NO : Repair it. Then go to Step 9.
STEP 8. Using scan tool MB991502, check data list item 14:
Throttle Position Sensor.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK"(OFF) position before
connecting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to the data reading mode for item
14, Throttle Position Sensor.
•
With the throttle valve in the idle position, voltage should
be between 0.535 and 0.735 volts.
•
With the throttle valve in the full-open position, voltage
should be between 4.5 and 5.5 volts.
(4) Turn the ignition switch to the "LOCK"(OFF) position.
Q: Is the sensor operating properly?
YES : It can be assumed that this malfunction is intermittent.
Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points(
).
NO : Replace the PCM. Then go to Step 9.
ACX02484 AH
THROTTLE
POSITION
SENSOR
CONNECTOR:B-05
AK000280
CONNECTOR : C-41
PCM
AY
AC003081 AB
16 PIN
MB991502
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-99
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 P0122 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
MULTIPORT FUEL INJECTION(MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-100
DTC P0123: Throttle Position Circuit High Input
AK000500
2 3 4
1
GREEN-YELLO
W
BR
O
WN-
WHITE
BR
O
WN-
WHITE
BLA
CK
98
78
71
88 89
76 77
72
79
91
73
80
74
75
81
92
82 83
93
84 85
94
86 87
95 96
90
97
57
78
46
5V
AUTO-CRUISE
CONTROL SYSTEM
B-05
(MU802724)
THROTTLE POSITION
SENSOR
4
3
1
POWERTRAIN CONTROL
MODULE(PCM)
C-41
(MU803782)
C-40
(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
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