Nissan Sentra manuals

Nissan Sentra Service Manual: 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:

Head restraints/Headrests
WARNINGHead restraints/headrests supplement the other vehicle safety systems. They may provide additional protection against injury in certain rear end collisions. Adjustable head restraints/headrests must be adjusted properly, as specified in this section. Check the adjus ...

Glove box assembly
Removal and Installation REMOVAL Remove the instrument side finisher RH using a suitable tool. Remove the glove box assembly upper screws (A). Remove the glove box assembly lower screws (A). Disconnect the harness connectors from the trunk switch and glove box lamp, the ...

Basic inspection
Diagnosis and repair work flow Work flow OVERALL SEQUENCE DETAILED FLOW 1.GET INFORMATION FOR SYMPTOM Get detailed information from the customer about the symptom (the condition and the environment when the incident/malfunction occurs). Check operation condition of the function th ...

© 2014-2021 Copyright www.nisentra.com