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:

    Diagnosis system (driver seat C/U)
    Diagnosis Description The auto drive positioner system can be checked and diagnosed for component operation with CONSULT. DIAGNOSTIC MODE Diagnostic mode [AUTO DRIVE POS.] Description WORK SUPPORT Changes the setting of each function SELF DIAGNOSTIC RESULT Perf ...

    Power supply and ground circuit
    BCM (BODY CONTROL MODULE) BCM (BODY CONTROL MODULE) : Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuses or fusible link are blown. 2. CHECK POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect BCM. Check voltage between BCM harness connector and ...

    Sunload sensor
    Removal and Installation REMOVAL Remove the front LH speaker grille from the instrument panel. Refer to IP-10, "Exploded View". Disconnect the harness connector from the sunload sensor. Release the sunload sensor tabs and remove the sunload sensor (1) from the front LH speake ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2023 Copyright www.nimainfo.com
    0.0081