Mitsubishi Eclipse. Manual — part 405
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-163
STEP 10. Check the engine coolant temperature sensor.
(1) Disconnect the engine coolant temperature sensor
connector B-11.
(2) Remove the engine coolant temperature sensor.
(3) With the temperature sensing portion of engine coolant
temperature sensor immersed in hot water, check
resistance.
Standard value:
14
− 17 kΩ [at −20°C (−4°F)]
5.1
− 6.5 kΩ [at 0°C (32°F)]
2.1
− 2.7 kΩ [at 20°C (68°F)]
0.9
− 1.3 kΩ [at 40°C (104°F)]
0.48
− 0.68 kΩ [at 60°C (140°F)]
0.26
− 0.36 kΩ [at 80°C (176°F)]
(4) Apply 3M
AAD part number 8731 or equivalent on the
screw section of the engine coolant temperature sensor.
(5) Install the engine coolant temperature sensor, and tighten
to the specified torque.
Tightening torque: 29
± 10 N⋅m (22 ± 7 ft-lb)
Q: Is the resistance at the standard value?
YES : Replace the ECM or PCM. Then go to Step 11.
NO : Replace the engine coolant temperature sensor. Then
go to Step 11.
STEP 11. 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 P0118 set?
YES : Retry the troubleshooting.
NO : The inspection is complete.
AK300435
1
2
CONNECTOR: B-11
AB
B-11 (B)
HARNESS CONNECTOR:
COMPONENT SIDE
AKX01622
AKX01623 AB
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-164
DTC P0121: Throttle Position Sensor Circuit Range/Performance Problem
AK000689
2 3 4
1
GREEN-
YELL
O
W
YELL
OW
YELL
OW
BL
ACK
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>
Throttle Position Sensor (TPS) Circuit
AK300080
CONNECTOR: B-07
THROTTLE
POSITION
SENSOR
AB
B-07 (B)
AK300244
CONNECTORS: C-55, C-59 <A/T>
AD
PCM
C-55 (GR)
C-59 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-165
.
CIRCUIT OPERATION
• A 5-volt power supply is applied on the TPS
power terminal (terminal No. 4) from the ECM
(terminal No. 42) <M/T> or PCM (terminal No. 46)
<A/T>.
The ground terminal (terminal No. 1) is grounded
with ECM (terminal No. 49) <M/T> or PCM (termi-
nal No. 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 (termi-
nal No. 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.
.
DESCRIPTIONS OF MONITOR METHODS
Detect malfunction if the relation between throttle
position sensor (main) and throttle position sen-
sor (sub) is wrong.
.
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)
• Volume airflow sensor
.
AK300091
CONNECTORS: C-58, C-62 <M/T>
ECM
AD
C-58 (GR)
C-62 (GR)
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-166
DTC SET CONDITIONS <Range/Performance problem-relation between main and sub>
Logic Flow Chart
.
Check Conditions
• 2 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.
.
START
ENGINE SPEED > 2000rpm
LOAD VALUE > 60%
END
NO
NO
NO
NO
YES
YES
YES
YES
MALFUNCTION
GOOD
OUTPUT VOLTAGE
< 0.8V
MONITORING
CONDITIONS
CONTINUOUS
FAILURE FOR 2 secs
AK301427
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