CVT RE0F10A Transmission Fluid Pressure SEN/SW A

P0841 TRANSMISSION FLUID PRESSURE SEN/SW A

Description

Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signal, TCM changes the operating pressure of the primary pulley and the secondary pulley and changes the groove width of the pulley to control the gear ratio.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If "DTC CONFIRMATION PROCEDURE" has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

1. CHECK DTC DETECTION

With CONSULT
1.Turn ignition switch ON.
2.Select "DATA MONITOR".
3.Start engine and maintain the following conditions for at least 12 consecutive seconds.





Is "P0841" detected?
YES- Go to "Diagnosis Procedure".
NO- Check intermittent incident. Intermittent Incident.


Diagnosis Procedure


1. CHECK LINE PRESSURE

Perform line pressure test. CVT RE0F10A.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace damaged parts. CVT RE0F10A.

2. CHECK SECONDARY PRESSURE SENSOR SYSTEM

Check secondary pressure sensor system. CVT RE0F10A Transmission Fluid Pressure SEN/SW A.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace damaged parts.

3. CHECK LINE PRESSURE SOLENOID VALVE

1.Turn ignition switch OFF.
2.Disconnect CVT unit connector.
3.Check line pressure solenoid valve. CVT RE0F10A Pressure Control Solenoid A.
Is the inspection result normal?
YES- GO TO 4.
NO- Replace transaxle assembly. Exploded View.

4. CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. CVT RE0F10A Pressure Control Solenoid B.
Is the inspection result normal?
YES- GO TO 5.
NO- Replace transaxle assembly. Exploded View.

5. CHECK STEP MOTOR SYSTEM

Check step motor system. CVT RE0F10A.
Is the inspection result normal?
YES- GO TO 6.

NO- Repair or replace damaged parts.

6. DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES- Replace TCM. Exploded View.
NO- Repair or replace damaged parts.