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 вЂњPвЂќ and вЂњNвЂќ 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 вЂњDRIVING CYCLEвЂќ and indicates a series of driving cycle of вЂњIgnition switch OFF → ON → driving → OFFвЂќ.

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.PREPARATION BEFORE WORK

If another вЂњDTC CONFIRMATION PROCEDUREвЂќ 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

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

Selector lever : вЂњDвЂќ position

Accelerator pedal position : 0.1/8 or more

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

Stop the vehicle.
Check the first trip DTC.

Is вЂњP0746вЂќdetected? YES >> Go to TM-191, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK LINE PRESSURE SOLENOID VALVE

Turn ignition switch OFF.
Disconnect CVT unit connector.
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.

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".

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