Nissan Maxima Service and Repair Manual: P1745 line pressure control

Description

The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

NOTE: Immediately after performing any "DTC CONFIRMATION PROCEDURE", 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" in "TRANSMISSION".

  3.  Check that output voltage of CVT fluid temperature sensor is within the range below.

ATF TEMP SEN : 1.0 - 2.0 V

If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage (cool down the fluid)

Diagnosis Procedure

1.CHECK DTC

With CONSULT

  1.  Start engine.

  2.  Perform "Self Diagnostic Results" in "TRANSMISSION".

    P1740 select solenoid
    Description  The lock-up select solenoid valve controls lock-up clutch pressure or forward clutch pressure (reverse brake pressure).  When controlling lock-up clutch, th ...

    P1777 step motor
    Description The step motor changes the step by turning 4 coils ON/OFF according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is c ...

    Other materials:

    Vehicle loading information
    WARNING It is extremely dangerous to ride in a cargo area inside a vehicle. In a collision, people riding in these areas are more likely to be seriously injured or killed. Do not allow people to ride in any area of your vehicle that is not equipped with seats and seat belts. Be ...

    Extended storage switch
    The extended storage switch is used when the vehicle is in transit from the factory. It is located in the fuse panel to the left of the steering wheel on the instrument panel. If any electrical equipment does not operate, ensure the extended storage switch is pushed fully in place, as shown ...

    Horn
    Description Horn (high/low) is located inside of front bumper and operates when theft warning system is in alarm phase. Component Function Check 1.CHECK FUNCTION  Select HORN in "ACTIVE TEST" mode with CONSULT.  Check the horn (high/low) operation. Diagnosis Pro ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2025 Copyright www.nimainfo.com
    0.0071