Mitsubishi Colt Ralliart. Manual - part 185

TROUBLESHOOTING <CVT>

CVT

23A-83

STEP 5. Measure the voltage at engine-CVT-ECU 
connector A-114.
(1) Connect CVT control solenoid valve assembly 

connector A-117.

AC403088AF

A-114

Connector: A-114

6

4

2

5

3

1

9

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10

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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) Use the special tool Check connector to measure 

the voltage between engine-CVT-ECU connector 
A-114 terminal No.2 and earth.

OK: Approximately 11 V

Q: Is the check result normal?

YES : . 

Go to Step 8.

NO : 

Go to Step 6.

STEP 6. Connector check: A-114 
engine-CVT-ECU connector.

AC403088AG

A-114

Connector: A-114

6

4

2

5

3

1

9

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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 7.

NO : 

Repair the defective connector.

Main

Index

Group

TOC

TROUBLESHOOTING <CVT>

CVT

23A-84

STEP 7. Check the harness between CVT control 
solenoid valve assembly connector A-117 
terminal No.5 and engine-CVT-ECU connector 
A-114 terminal No.2.

AC314190

AC

Inhibitor switch

Transmission 
control cable

A-117 (GR)

Connector: A-117

Harness side

AC403088AG

A-114

Connector: A-114

6

4

2

5

3

1

9

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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 : 

Go to Step 8.

NO : 

Repair the wiring harness.

STEP 8. M.U.T.-III actuator test
Item 02: Shift control solenoid valve

OK: Operating sound can be heard.

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Cope with Intermittent 

Malfunction 

P.00-13

).

NO : 

Replace the engine-CVT-ECU.

STEP 9. Connector check: A-117 CVT control 
solenoid valve assembly connector.

AC314190

AC

Inhibitor switch

Transmission 
control cable

A-117 (GR)

Connector: A-117

Harness side

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the defective connector.

STEP 10. Measure the resistance at CVT control 
solenoid valve assembly connector A-117.

AC314190

AC

Inhibitor switch

Transmission 
control cable

A-117 (GR)

Connector: A-117

Harness side

Disconnect the connector, and measure the resist-
ance between terminal 5 and 9 at the solenoid valve 
side.

OK: 2.9 

− 3.5 Ω (CVT fluid temperature at 

20

°C)

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Check the solenoid valve harness.

Main

Index

Group

TOC

TROUBLESHOOTING <CVT>

CVT

23A-85

STEP 11. Connectors check: A-17 intermediate 
connector, B-109 J/B connector.

AC313811 AG

Connector: A-17

A-17 (B)

AC313824AP

Connector: B-109

Harness side

Junction block (Front view)

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the defective connector.

STEP 12. Check the harness between CVT 
control solenoid valve assembly connector A-117 
terminal No.9 and J/B connector B-109 terminal 
No.5.

AC313811 AG

Connector: A-17

A-17 (B)

AC313824AP

Connector: B-109

Harness side

Junction block (Front view)

Check the power supply line for short-circuited or 
open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

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TROUBLESHOOTING <CVT>

CVT

23A-86

Code No.33, 37 Damper Clutch Control Solenoid Valve System

SOLENOID VALVE SYSTEM CIRCUIT

 Refer to 

P.23A-77

.

OPERATION

The damper clutch control solenoid valve engages or 
disengages the torque converter by using the signal 
from the engine-CVT-ECU.

DIAGNOSIS CODE SET CONDITIONS

• If the damper clutch control solenoid valve driving 

voltage is 3 V or less, code No.33 will be set.

• If the difference between the engine speed and 

the turbine speed sensor output is 100 r/min or 
less when code No.33 is set, code No.37 will be 
set.

PROBABLE CAUSES

• Malfunction of damper clutch control solenoid 

valve

• Damaged harness wires and connectors

• Malfunction of the engine-CVT-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code

Q: Is diagnosis code 31 set?

YES : 

Go to Step 9.

NO : 

Go to Step 2.

STEP 2. M.U.T.-III actuator test
Item 03: Damper clutch control solenoid valve

OK: Operating sound can be heard.

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 3.

STEP 3. Connector check: A-117 CVT control 
solenoid valve assembly connector.

AC314190

AC

Inhibitor switch

Transmission 
control cable

A-117 (GR)

Connector: A-117

Harness side

Check for the contact with terminals.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Measure the resistance at CVT control 
solenoid valve assembly connector A-117.

AC314190

AC

Inhibitor switch

Transmission 
control cable

A-117 (GR)

Connector: A-117

Harness side

Disconnect the connector, and measure the resist-
ance between terminal 3 and 10 at the solenoid 
valve side.

OK: 2.9 

− 3.5 Ω (CVT fluid temperature at 

20

°C)

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the damper clutch control solenoid 
valve. (Refer to 

P.23A-155

).

Main

Index

Group

TOC