Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 224
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-95
STEP 13. 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 ECM or PCM. Then go to Step 14.
STEP 14. 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 P0121 is output?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AKX01177
16 PIN
MB991502
AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-96
DTC P0122: Throttle Position Circuit Low Input
AK000689
2 3 4
1
GREEN-YELLO
W
YELLO
W
YELLO
W
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
80
87
81
94
85
82
84
93
86
98
99
74
92
73
83
88
91
95
97
96
100
89
78
71
90
76 77
75
72
79
97
49
<M/T>*1
57
<A/T>*3
78
<M/T>*2
78
<A/T>*4
42
<M/T>*1
46
<A/T>*3
5V
AUTO-CRUISE
CONTROL SYSTEM
B-07
(MU802724)
THROTTLE POSITION
SENSOR
4
3
1
ENGINE CONTROL
MODULE(ECM)<M/T>
OR
POWERTRAIN CONTROL
MODULE(PCM)<A/T>
C-62<M/T>
(MU803783)
C-59<A/T>
(MU803782)
65
43
50
42
49
41
48
60 61
64
46 47
58 59
67 68
45
56
66
52
51
44
53
62
54
63
57
55
C-58<M/T>
(MU803782)
C-55<A/T>
(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
NOTE
*1:ECM connector C-58<M/T>
*2:ECM connector C-62<M/T>
*3:PCM connector C-55<A/T>
*4:PCM connector C-59<A/T>
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-97
CIRCUIT OPERATION
•
A 5-volt power supply is applied on the TPS
power terminal (terminal 4) from the ECM
(terminal 42) <M/T> or PCM (terminal 46) <A/T>.
The ground terminal (terminal 1) is grounded with
ECM (terminal 49) <M/T> or PCM (terminal 57)
<A/T>.
•
When the throttle valve shaft is turned from the
idle position to the fully opened position, the
resistor between the TPS output terminal
(terminal 3) and ground terminal will increase
according to the rotation.
TECHNICAL DESCRIPTION
•
The TPS outputs voltage which corresponds to
the throttle valve opening angle.
•
The ECM <M/T> or PCM <A/T> checks whether
the voltage is within a specified range.
DTC SET CONDITIONS
Check Conditions
•
Two seconds or more have passed since the
staring sequence was completed.
•
Engine speed is higher than 2,000 r/min.
•
Volumetric efficiency is higher than 60 percent.
Judgement Criteria
•
TPS output voltage has continued to be 0.8 volt
or lower for 2 seconds.
TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)
•
TPS failed or maladjusted.
•
Open or shorted TPS circuit, or loose connector.
•
ECM failed. <M/T>
•
PCM failed. <A/T>
DIAGNOSIS
Required Special Tools
MB991502: Scan Tool (MUT-II)
ACX02484 AC
CONNECTOR : B-07
THROTTLE
POSITION
SENSOR
AK000225
CONNECTORS : C-58, C-62<M/T>,
C-55, C-59<A/T>
C-55
C-58
PCM<A/T>
ECM<M/T>
AK
C-59
C-62
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-98
STEP 1. 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 : Go to Step 2.
STEP 2. Check connector B-07 at throttle position sensor
for damage.
Q: Is the connector in good condition?
YES : Go to Step 3.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection (
). Then go to Step 9.
AKX01177
16 PIN
MB991502
AB
ACX02484 AC
CONNECTOR : B-07
THROTTLE
POSITION
SENSOR
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