CVT RE0F10E

P0743 TORQUE CONVERTER

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


CAUTION:
Be careful of the driving speed.

1. PREPARATION BEFORE WORK

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

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 following range.

FLUID TEMP : 20�C (68�F) or more

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 10 seconds or more.

Selector lever : "D" position
Vehicle speed : 40 km/h (25 MPH) or more

3.Stop the vehicle.
4.Check the first trip DTC.
Is "P0743" detected?
YES- Go to "Diagnosis Procedure" CVT RE0F10D.
NO- INSPECTION END


Diagnosis Procedure


1. CHECK CIRCUIT BETWEEN TCM AND CVT UNIT

1.Turn ignition switch OFF.
2.Disconnect TCM connector and CVT unit connector.
3.Check continuity between TCM harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 2.
NO- Repair or replace malfunctioning parts.

2. CHECK CIRCUIT BETWEEN CVT UNIT AND GROUND

Check resistance between CVT unit harness connector terminal and ground.





Is the inspection result normal?
YES - Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- GO TO 3.

3. CHECK CIRCUIT BETWEEN CVT UNIT AND CONTROL VALVE

1.Disconnect control valve connector. Refer to "Exploded View" Exploded View.
2.Check continuity between CVT unit harness connector terminal and control valve harness connector terminal.





Is the inspection result normal?
YES - GO TO 4.
NO- Replace terminal code assembly. Refer to "Exploded View" Exploded View.

4. CHECK CIRCUIT BETWEEN CONTROL VALVE AND GROUND

Check resistance between control valve harness connector terminal and ground.





Is the inspection result normal?
YES - Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- There is malfunction of torque converter clutch solenoid valve. Replace transaxle assembly. Refer to "Removal and Installation" Removal And Installation.