Mitsubishi Colt Ralliart. Manual — part 179
![](/vehicles/winoney/ama/flend/onod.png)
TROUBLESHOOTING <CVT>
CVT
23A-59
STEP 18. Connector check: A-114
engine-CVT-ECU connector.
AC403088AG
A-114
Connector: A-114
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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 19.
NO :
Repair the defective connector.
STEP 19. Check the harness between secondary
speed sensor connector A-112 terminal No.2 and
engine-CVT-ECU connector A-114 terminal No.45.
AC314193
Connector: A-112
AC
A-112 (B)
Transmission
control cable
Harness side
1
2
3
AC403088AG
A-114
Connector: A-114
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A-114 Harness side connector
Engine-CVT-ECU
Battery
(GR)
Check the output line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Repair the wiring harness.
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/onan.png)
TROUBLESHOOTING <CVT>
CVT
23A-60
STEP 20. Measure the output wave pattern of the
secondary speed sensor at engine-CVT-ECU
connector A-114 (using an oscilloscope).
AC403088AF
A-114
Connector: A-114
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3
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A-114 Check connector (special tool)
Engine-CVT-ECU
Battery
(GR)
(1) Disconnect the engine-CVT-ECU connector, and
connect the special tool Power plant ECU check
harness (MB991987).
(2) Shift the selector lever to the D range.
(3) Accelerate the vehicle to approximately 50 km/h.
(4) Use the special tool Check connector to measure
the voltage between engine-CVT-ECU connector
A-114 terminal No.45 and earth.
OK: A wave pattern such as the one
shown on
(Check Procedure
Using an Oscilloscope) should be output,
and the maximum value should be 4.8 V
or more and the minimum value should
be 0.6 V or less. There should be no noise
in the output wave pattern.
Q: Is the check result normal?
YES :
Go to Step 21.
NO :
Go to Step 22.
STEP 21. Measure the output wave pattern of the
primary speed sensor at engine-CVT-ECU
connector A-114 (using an oscilloscope).
AC403088AF
A-114
Connector: A-114
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4
2
5
3
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66
L
A-114 Check connector (special tool)
Engine-CVT-ECU
Battery
(GR)
(1) Disconnect the engine-CVT-ECU connector, and
connect the special tool Power plant ECU check
harness (MB991987).
(2) Shift the selector lever to the D range.
(3) Accelerate the vehicle to approximately 50 km/h.
(4) Use the special tool Check connector to measure
the voltage between engine-CVT-ECU connector
A-114 terminal No.43 and earth.
OK: A wave pattern such as the one
shown on
(Check Procedure
Using an Oscilloscope) should be output,
and the maximum value should be 4.8 V
or more and the minimum value should
be 0.6 V or less. There should be no noise
in the output wave pattern.
Q: Is the check result normal?
YES :
Go to Step 8.
NO :
Eliminate the cause of the noise.
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/pal.png)
TROUBLESHOOTING <CVT>
CVT
23A-61
STEP 22. Check the secondary speed sensor and
then recheck the diagnosis code.
(1) Remove the secondary speed sensor. Wipe any
metallic particles or dirt off the sensor tip.
(2) Install the secondary speed sensor and road test
the vehicle.
(3) Check if the diagnosis code is set.
Q: Is diagnosis code set?
YES :
Go to Step 23.
NO :
The inspection is complete.
STEP 23. Replace the secondary speed sensor
and then recheck the diagnosis code.
(1) Replace the secondary speed sensor. (Refer to
).
(2) Test drive the vehicle.
(3) Check if the diagnosis code is set.
Q: Is diagnosis code set?
YES :
Go to Step 24.
NO :
The inspection is complete.
STEP 24. Replace the CVT assembly and then
recheck the diagnosis code.
(1) Replace the CVT assembly.
(2) Test drive the vehicle.
(3) Check if the diagnosis code is set.
Q: Is diagnosis code set?
YES :
Eliminate the cause of the noise.
NO :
The inspection is complete.
STEP 25. M.U.T.-III data list
Item 03: Primary 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 26.
STEP 26. Connector check: A-116 primary speed
sensor connector.
AC314200
Connector: A-116
AC
A-116 (B)
Transmission
control cable
Harness side
1
2
3
Check for the contact with terminals.
Q: Is the check result normal?
YES :
Go to Step 27.
NO :
Repair the defective connector.
STEP 27. Measure the resistance at primary
speed sensor connector A-116.
AC314200
Connector: A-116
AC
A-116 (B)
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 33.
NO :
Go to Step 28.
Main
Index
Group
TOC
![](/vehicles/winoney/ama/flend/frb.png)
TROUBLESHOOTING <CVT>
CVT
23A-62
STEP 28. Measure the voltage at
engine-CVT-ECU connector A-114.
(1) Connect primary speed sensor connector A-116.
AC403088AF
A-114
Connector: A-114
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4
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5
3
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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 31.
NO :
Go to Step 29.
STEP 29. Connector check: A-114
engine-CVT-ECU connector.
AC403088AG
A-114
Connector: A-114
6
4
2
5
3
1
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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 30.
NO :
Repair the defective connector.
STEP 30. M.U.T.-III data list
Item 03: Primary 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 :
Replace the engine-CVT-ECU.
Main
Index
Group
TOC
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