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

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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

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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 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

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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 

P.23A-155

).

NO : 

Repair the wiring harness.

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 6.

NO : 

Repair the defective connector.

Main

Index

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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 

P.23A-123

).

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction 

P.00-13

).

NO : 

Go to Step 2.

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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

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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

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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

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