Nissan Maxima Service and Repair Manual: P0778 pressure control solenoid B

Description

The secondary 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

CAUTION: Always drive vehicle at a safe speed.

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.  Start engine.
  2.  Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
  3.  Perform "Self Diagnostic Results" in "TRANSMISSION".

With GST

Follow the procedure "With CONSULT".

Diagnosis Procedure

Regarding Wiring Diagram information, refer to TM-126, "Wiring Diagram".

1.CHECK SECONDARY PRESSURE SOLENOID VALVE CIRCUIT

  1.  Turn ignition switch OFF.
  2.  Disconnect TCM connector.
  3.  Check resistance between TCM vehicle side harness connector terminal and ground.

2.CHECK HARNESS BETWEEN TCM AND SECONDARY PRESSURE SOLENOID VALVE (PART 1)

  1.  Disconnect CVT unit connector.
  2.  Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side harness connector terminal.

3.CHECK HARNESS BETWEEN TCM AND SECONDARY PRESSURE SOLENOID VALVE (PART 2

Check continuity between TCM vehicle side harness connector terminal and ground.

4.CHECK SECONDARY PRESSURE SOLENOID VALVE

Check secondary pressure solenoid valve. Refer to TM-78, "Component Inspection (Secondary Pressure Solenoid Valve)".

5.DETECT MALFUNCTIONING ITEMS

Check TCM connector pin terminals for damage or loose connection with harness connector.

Component Inspection (Secondary Pressure Solenoid Valve)

1.CHECK SECONDARY PRESSURE SOLENOID VALVE

Check resistance between CVT unit connector terminal and ground.

    P0776 pressure control solenoid B
    Description The secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in response to a signal sent from the TCM. DTC Logic DTC DETECTION LOGIC DTC ...

    P0826 up and down shift SW
    Description Manual mode switch transmits signals (manual mode, not manual mode, shift up and shift down) to combination meter. Paddle shifter transmits signals (shift up and shift down) to combi ...

    Other materials:

    ECU diagnosis information
    BCM (BODY CONTROL MODULE) Reference Value NOTE: The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information. Activate and display TPMS transmitter IDs Display tire pressure reported by the TPMS tran ...

    Intake Manifold
    Removal and Installation Intake manifold Intake manifold gaskets  Refer to INSTALLATION REMOVAL WARNING: To avoid the danger of being scalded, do not drain the coolant when the engine is hot. Release the fuel pressure. Refer to EC-592, "Inspection". Disconnect the ba ...

    Exterior front
    Engine hood Wiper and washer switch Windshield Power windows Door locks NISSAN Intelligent Key. Keys Mirrors. Side view camera (if so equipped) Tire pressure. Flat tire. Tire chains Headlight and turn signal switch. Replacing bulbs Fog light switch. Daytime running light syste ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0127