Nissan Sentra manuals

Nissan Sentra Service Manual: P0746 Pressure control solenoid A

Nissan Sentra Service Manual / Transmission & driveline / Transaxle & transmission / CVT: RE0F11A / P0746 Pressure control solenoid A

DTC Logic

DTC DETECTION LOGIC

DTC

 CONSULT screen terms (Trouble diagnosis content)

 DTC detection condition

 Possible causes
P0746 PRESSURE CONTROL SOLENOID A (Pressure Control Solenoid A Performance/Stuck Off) The detecting condition A or detection condition B is detected twice or more (1 second or more later after detection of the first) in the same DC under the following diagnosis conditions:

Diagnosis conditions

  • After the ignition switch is ON, 500 msec or more have passed.
  • Selector lever: Other than “P” and “N” positions
  • Idle is not being detected.
  • Engine speed: 600 rpm or more
  • Primary pulley speed: 500 rpm or more
  • Auxiliary gearbox shifting is not in progress.
  • Acceleration/deceleration speed: −0.05 G or more
  • The primary pulley speed experienced 306 rpm or more and the secondary pulley speed experienced 230 rpm or more at least once.
  • The output speed is 107 rpm or less or the secondary pulley speed exceeds 61 rpm.

Detection condition A

  • Status with the shifting ratio of the primary pulley speed/secondary pulley ratio exceeding 2.55 is 200 msec or more continuously.

Detection condition B

  • Status with the shifting ratio of the primary pulley speed/secondary pulley ratio exceeding 3.35 is 100 msec or more continuously.
  • Line pressure solenoid valve
  • Control valve assembly

NOTE:

DC stands for “DRIVING CYCLE” and indicates a series of driving cycle of “Ignition switch OFF → ON → driving → OFF”.

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.CHECK DTC DETECTION

  1. Start the engine.
  2. Drive the vehicle.
  3. Maintain the following conditions for 10 seconds or more.

Selector lever : “D” position

Accelerator pedal position : 0.1/8 or more

Vehicle speed : 40 km/h (25 MPH) or more

  1. Stop the vehicle.
  2. Check the first trip DTC.

Is “P0746”detected? YES >> Go to TM-191, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK LINE PRESSURE SOLENOID VALVE

  1. Turn ignition switch OFF.
  2. Disconnect CVT unit connector.
  3. Check line pressure solenoid valve. Refer to TM-191, "Component Inspection"

Is the inspection result normal? YES >> GO TO 2.

NO >> Repair or replace malfunctioning parts.

2.CHECK LINE PRESSURE

Perform line pressure test. Refer to TM-149, "Work Procedure".

Is the inspection result normal? YES >> Check intermittent incident. Refer to GI-39, "Intermittent Incident".

NO >> Repair or replace the malfunction items.

Component Inspection

1.CHECK LINE PRESSURE SOLENOID VALVE

Check resistance between CVT unit connector terminal and ground.

result normal? Is the inspection
result normal? YES >> INSPECTION END

NO >> There is a malfunction of line pressure solenoid valve. Replace transaxle assembly. Refer to TM- 283, "Removal and Installation".

P0744 Torque converter
DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes P0744 TORQUE CONVERTER (Torque converter ...

P0846 Transmission fluid pressure SEN/SW B
DTC Logic DTC DETECTION LOGIC DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes P0846 TRANSMISSION FLUID PRESSURE SEN/SW ...

Other materials:

Strg branch line circuit
Diagnosis procedure 1.Check connector Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result ...

Anti-pinch inspection
Description If any of the following operations are performed, the initialization is necessary for normal operation of antipinch function. Disconnection and connection of battery cable from negative terminal. When power window main switch replaced. Electric power supply to power window ma ...

Description
NOTE: This vehicle is diagnosed using the CONSULT-III plus. When CONSULT is connected with a data link connector equipped on the vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various kinds of diagnostic tests. Instrument lower panel LH ...

© 2014-2025 Copyright www.nisentra.com