Mitsubishi Colt Ralliart. Manual — part 60
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-194
STEP 4. Connector check: A-08 engine-ECU
connector or engine-CVT-ECU connector
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair or replace the connector.
STEP 5. M.U.T.-III diagnosis code.
• Reconfirmation of diagnosis code.
Q: Is the diagnosis code set?
YES :
Replace the engine-ECU <M/T> or
engine-CVT-ECU <CVT>.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunctions
).
Code No. P2100: Throttle Valve Control Servo Circuit (open)
OPERATION
• Controls the current that is applied from the
engine-ECU <M/T> or engine-CVT-ECU <CVT>
(terminals No. 7, No. 22) to the electronically con-
trolled throttle valve (terminals No. 1, No. 2).
FUNCTION
• The engine-ECU <M/T> or engine-CVT-ECU
<CVT> varies the direction and the amperage of
the current that is applied to the throttle valve
control servo in order to control the opening of
the throttle valve.
TROUBLE JUDGMENT
Check Conditions
• Ignition switch is in "ON" position <M/T>.
• Throttle valve control servo supply voltage is 6.0
V or more <M/T>.
• Battery positive voltage is more than 8.3 V.
Judgement Criteria
• There is deviation between throttle valve actual
opening angle and target opening angle <M/T>.
• Throttle valve control servo current is 0.1 A or
less for 0.72 second <CVT>.
PROBABLE CAUSES
• Failed throttle valve control servo
• Open/short circuit in throttle valve control servo
circuit or lose connector contact
• Failed engine-ECU <M/T> or engine-CVT-ECU
<CVT>
AK402725
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129
72 71
74 73
76 75
R
AG
A-08
Connector:
A-08
Harness side connector
Battery
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-195
DIAGNOSIS PROCEDURE
STEP 1. Connector check: A-107
electronic-controlled throttle valve connector
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Repair or replace the connector.
STEP 2. Check throttle valve control servo itself.
• Check throttle valve control servo itself (Refer to
).
Q: Is the check result normal?
YES :
Go to Step 3 .
NO :
Replace throttle body assembly.
STEP 3. Connector check: A-114 engine-ECU
connector or engine-CVT-ECU connector
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair or replace the connector.
AK402006
1
6 5 4 3 2
AC
A-107 (B)
Connector: A-107
A-107 Harness side
connector
AK402006
1
6 5 4 3 2
AC
A-107 (B)
Connector: A-107
A-107 Harness side
connector
AK402745
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4
2
5
3
1
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65
66
L
AD
A-114
Connector:
A-114
Harness side connector
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Battery
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-196
STEP 4. Perform resistance measurement at A-08
engine-ECU connector or engine-CVT-ECU
connector.
• Disconnect connector and measure at harness
side.
• Resistance between terminal No. 93 and earth or
terminal No. 108 and earth.
OK: Continuity (2
Ω or less)
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Check repair harness between A-08
(terminal No. 93 or No. 108) engine-ECU
connector or engine-CVT-ECU connector
and A-30 (terminal No. 3 or No. 6) earth
connector.
• Check earthing line for open circuit
and damage.
STEP 5. Check harness between A-107 (terminal
No. 1) electronic-controlled throttle valve
connector and A-114 (terminal No. 7) engine-ECU
connector or engine-CVT-ECU connector.
• Check output line for short circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair the damaged harness wire.
AK402725
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80
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93
94
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85
86
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100
101
102
103
104
105
106
115
116
117
118
119
120
121
107
108
109
110
111
112
113
114
130
131
132
133
134
135
136
122
123
124
125
126
127
128
129
72 71
74 73
76 75
R
AG
A-08
Connector:
A-08
Harness side connector
Battery
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
AK402006
1
6 5 4 3 2
AC
A-107 (B)
Connector: A-107
A-107 Harness side
connector
AK402745
6
4
2
5
3
1
9
7
8
10
11
12
13
14
15
16
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55
56
57
58
59
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61
62
63
64
65
66
L
AD
A-114
Connector:
A-114
Harness side connector
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Battery
Main
Index
Group
TOC
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MPI) <4A9>
13A-197
STEP 6. Check harness between A-107 (terminal
No. 2) electronic-controlled throttle valve
connector and A-114 (terminal No. 22)
engine-ECU connector or engine-CVT-ECU
connector.
• Check output line for short circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair the damaged harness wire.
STEP 7. Check the trouble symptoms.
Q: Is the check result normal?
YES :
Replace engine-ECU <M/T> or
engine-CVT-ECU <CVT>.
NO :
Intermittent malfunction (Refer to GROUP
00
− How to Use
Troubleshooting/Inspection Service Points
−
How to Cope with Intermittent Malfunctions
).
AK402006
1
6 5 4 3 2
AC
A-107 (B)
Connector: A-107
A-107 Harness side
connector
AK402745
6
4
2
5
3
1
9
7
8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
L
AD
A-114
Connector:
A-114
Harness side connector
Engine-ECU <M/T> or
engine-CVT-ECU <CVT>
Battery
Main
Index
Group
TOC
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