Mitsubishi Colt Ralliart. Manual — part 171
TROUBLESHOOTING <CVT>
CVT
23A-27
STEP 15. Measure the voltage at
engine-CVT-ECU connector A-114.
(1) Connect line pressure sensor connector A-113.
AC403088AF
A-114
Connector: A-114
6
4
2
5
3
1
9
7
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66
L
A-114 Check connector (special tool)
Engine-CVT-ECU
Battery
(GR)
(2) Disconnect the engine-CVT-ECU connector, and
connect the special tool Power plant ECU check
harness (MB991987).
(3) Let the engine run at idle.
(4) Shift the selector lever to the P range.
(5) Close the accelerator pedal fully.
(6) Use the special tool Check connector to measure
the voltage between engine-CVT-ECU connector
A-114 terminal No.11 and earth.
OK: 0.9
− 1.4 V
Q: Is the check result normal?
YES : .
Go to Step 18.
NO : .
Go to Step 16.
STEP 16. Connector check: A-114
engine-CVT-ECU connector.
AC403088AG
A-114
Connector: A-114
6
4
2
5
3
1
9
7
8
10
11
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60
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66
L
A-114 Harness side connector
Engine-CVT-ECU
Battery
(GR)
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 17.
NO :
Repair the defective connector.
Main
Index
Group
TOC
TROUBLESHOOTING <CVT>
CVT
23A-28
STEP 17. Check the harness between line
pressure sensor connector A-113 terminal No.2
and engine-CVT-ECU connector A-114 terminal
No.11.
AC314193
Connector: A-113
AB
A-113 (B)
Transmission
control cable
1
2
3
Harness side
AC403088AG
A-114
Connector: A-114
6
4
2
5
3
1
9
7
8
10
11
12
13
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60
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65
66
L
A-114 Harness side connector
Engine-CVT-ECU
Battery
(GR)
Check the output line for short-circuited or open cir-
cuit.
Q: Is the check result normal?
YES :
Replace the line pressure sensor. (Refer to
).
NO :
Repair the wiring harness.
STEP 18. Connector check: A-114
engine-CVT-ECU connector.
AC403088AG
A-114
Connector: A-114
6
4
2
5
3
1
9
7
8
10
11
12
13
14
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60
61
62
63
64
65
66
L
A-114 Harness side connector
Engine-CVT-ECU
Battery
(GR)
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the defective connector.
Main
Index
Group
TOC
TROUBLESHOOTING <CVT>
CVT
23A-29
Code No.22 Turbine Speed Sensor System
ENGINE-
CVT-ECU
TURBINE
SPEED SENSOR
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet
Turbine Speed Sensor System Circuit
AC405420 AB
OPERATION
The turbine speed sensor detects the forward clutch
retainer speed, and sends the signal to the
engine-CVT-ECU.
DIAGNOSIS CODE SET CONDITIONS
Code No.22 will be set if the turbine speed sensor
signal can not be detected while the vehicle is driven
(engine speed is 450 r/min or more, and primary
speed is 1,000 r/min or more).
PROBABLE CAUSES
• Malfunction of turbine speed sensor
• Damaged harness wires and connectors
• Malfunction of the engine-CVT-ECU
• Malfunction of forward clutch retainer
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-III data list
Item 02: Turbine speed sensor (Refer to Data List
Table
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
− How to Cope with Intermittent
).
NO :
Go to Step 2.
Main
Index
Group
TOC
TROUBLESHOOTING <CVT>
CVT
23A-30
STEP 2. Connector check: A-120 turbine speed
sensor connector.
AC314200
Connector: A-120
AB
A-120 (GR)
Transmission
control cable
Harness side
1
2
3
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 3.
NO :
Repair the defective connector.
STEP 3. Measure the resistance at turbine speed
sensor connector A-120.
AC314200
Connector: A-120
AB
A-120 (GR)
Transmission
control cable
Harness side
1
2
3
Disconnect the connector, and measure the resist-
ance between terminal 1 and earth at the wiring har-
ness side.
OK: 2
Ω or less
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Go to Step 4.
STEP 4. Measure the voltage at engine-CVT-ECU
connector A-114.
(1) Connect turbine speed sensor connector A-120.
AC403088AF
A-114
Connector: A-114
6
4
2
5
3
1
9
7
8
10
11
12
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46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
L
A-114 Check connector (special tool)
Engine-CVT-ECU
Battery
(GR)
(2) Disconnect the engine-CVT-ECU connector, and
connect the special tool Power plant ECU check
harness (MB991987).
(3) Turn the ignition switch to the ON position.
(4) Use the special tool Check connector to measure
the voltage between engine-CVT-ECU connector
A-114 terminal No.60 and earth.
OK: 0.5 V or less
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 5.
Main
Index
Group
TOC
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