P0841

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.

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. CHECK DTC DETECTION

With CONSULT
1.Start the engine.
2.Select "Data Monitor" in "TRANSMISSION".
3.Select "VEHICLE SPEED".
4.Drive the vehicle.
5.Maintain the following condition for 5 seconds or more.

VEHICLE SPEED : 30 km/h (19 MPH) or more

6.Stop the vehicle.
7.Select "Self Diagnostic Results" in "TRANSMISSION".
Is "P0841" 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 damaged parts. Line Pressure Test.

2. CHECK SECONDARY PRESSURE SENSOR SYSTEM

Check secondary pressure sensor system. P0840.
Is the inspection result normal?
YES- GO TO 3.
NO- Repair or replace damaged parts.

3. CHECK LINE PRESSURE SOLENOID VALVE

Check line pressure solenoid valve. P0745.
Is the inspection result normal?
YES- GO TO 4.
NO- Repair or replace damaged parts.

4. CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. P0778.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace damaged parts.

5. CHECK STEP MOTOR SYSTEM

Check step motor system. P1777.
Is the inspection result normal?
YES- GO TO 6.
NO- Repair or replace damaged parts.

6. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
YES- Replace the transaxle assembly. Removal And Installation (2WD) or
Removal And Installation (AWD).
NO- Repair or replace damaged parts.