P1740

P1740 SELECT SOLENOID





Description
- Lock-up select solenoid valve is installed to control valve.
- Lock-up select solenoid valve switches among lock-up oil pressure, forward clutch oil pressure, and reverse brake oil pressure.
- Lock-up select solenoid valve is an ON/OFF solenoid valve.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE

CAUTION:
Always drive vehicle at a safe speed.
1.PRECONDITIONING
Immediately after performing any "DTC CONFIRMATION PROCEDURE", always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
- GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE (PART 1)
With CONSULT-III
1. Start the engine.
2. Select "Data Monitor" in "TRANSMISSION".
3. Select "RANGE".
4. Maintain the following conditions for 1 seconds or more.

RANGE : N.P

5. Select "Self Diagnostic Results" in "TRANSMISSION".
With GST
Follow the procedure "With CONSULT-III".
Is "P1740" detected?
YES - Go to P1740.
NO - GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE (PART 2)
With CONSULT-III
1. Select "Data Monitor" in "TRANSMISSION".
2. Select "RANGE".
3. Maintain the following state for 1 second or more.

RANGE : R.D

4. Select "Self Diagnostic Results" in "TRANSMISSION".
With GST
Follow the procedure "With CONSULT-III".
Is "P1740" detected?
YES - Go to P1740.
NO - INSPECTION END




Diagnosis Procedure
1.CHECK LOCK-UP SELECT SOLENOID VALVE CIRCUIT
1. Turn ignition switch OFF.
2. Check resistance between TCM connector terminal and ground.





Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO - GO TO 2.
2.CHECK LOCK-UP SELECT SOLENOID VALVE
1. Disconnect CVT unit harness connector.
2. Check lock-up select solenoid valve. P1740.
Is the inspection result normal?
YES - GO TO 3.
NO - Lock-up select solenoid valve is malfunctioning. Replace transaxle assembly. Exploded View.
3.CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK-UP SELECT SOLENOID VALVE) (PART 1)
1. Disconnect TCM connector.
2. Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side harness connector terminal.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK-UP SELECT SOLENOID VALVE) (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.





Is the inspection result normal?
YES - Check intermittent incident. Intermittent Incident.
NO - Repair or replace damaged parts.




Component Inspection (Lock-up Select Solenoid Valve)
1.CHECK LOCK-UP SELECT SOLENOID VALVE
Check resistance between CVT unit harness connector terminal and ground.





Is the inspection result normal?
YES - INSPECTION END
NO - Lock-up select solenoid valve is malfunctioning. Replace transaxle assembly. Exploded View.