P0744
P0744 TORQUE CONVERTER
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Be careful of the driving speed.
1. PREPARATION BEFORE OPERATION 1
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test.
- GO TO 2.
2. PREPARATION BEFORE OPERATION 2
With CONSULT
1.Start the engine.
2.Select "Data Monitor" in "TRANSMISSION".
3.Select "FLUID TEMP".
4.Confirm that the CVT fluid temperature is in the range below.
With GST
1.Start the engine.
2.Set the CVT fluid to 20�C (68�F) or more.
NOTE:
When the ambient temperature is 20�C (68�F), the CVT fluid usually increases to 50 to 80�C (122 to
176�F) with driving in an urban area for approximately 10 minutes.
Is the CVT fluid 20�C (68�F) or more?
YES- GO TO 3.
NO- 1.Warm the transaxle.
2.GO TO 3.
3. CHECK DTC DETECTION
1.Drive the vehicle.
2.Maintain the following conditions for 40 seconds or more.
3.Stop the vehicle.
4.Check the first trip DTC.
Is "P0744" detected?
YES- Go to .
NO- INSPECTION END
Diagnosis Procedure
1. CHECK LINE PRESSURE
Perform line pressure test. Line Pressure Test.
Is the inspection result normal?
YES - GO TO 2.
NO- Repair or replace the malfunction items.
2. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE
1.Turn ignition switch OFF.
2.Disconnect CVT unit connector.
3.Check torque converter clutch solenoid valve. .
Is the inspection result normal?
YES - GO TO 3.
NO- Repair or replace the malfunction items.
3. CHECK INTERMITTENT INCIDENT
Intermittent Incident.
Is the inspection result normal?
YES - Replace the transaxle assembly. Removal And Installation.
NO- Repair or replace the malfunction items.
Component Inspection (Torque Converter Clutch Solenoid Valve)
1. CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES- INSPECTION END
NO- There is a malfunction of torque converter clutch solenoid valve. Replace transaxle assembly.
Removal And Installation.