Nissan Maxima Service and Repair Manual: P0845 transmission fluid pressure SEN/SW B

Description

The primary pressure sensor detects primary pressure of CVT and sends a signal to 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 line temperature sensor is within the range below.

ATF TEMP SEN : 1.0 - 2.0 V

If it is 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)

4. Start engine and wait for at least 5 consecutive seconds.

With GST

Follow the procedure "With CONSULT".

Diagnosis Procedure

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

1.CHECK INPUT SIGNAL

  1.  Start engine.
  2.  Check voltage between TCM connector terminal and ground.

2.CHECK SENSOR POWER AND SENSOR GROUND

Check voltage between TCM connector terminals.

3.CHECK HARNESS BETWEEN TCM AND CVT UNIT (PRIMARY PRESSURE SENSOR) (PART 1)

  1.  Turn ignition switch OFF.
  2.  Disconnect TCM connector and CVT unit connector.
  3.  Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side harness connector terminal.

4.CHECK HARNESS BETWEEN TCM AND CVT UNIT (PRIMARY PRESSURE SENSOR) (PART 2

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

5.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART 1)

  1.  Turn ignition switch OFF.
  2.  Disconnect TCM connector and CVT unit connector.
  3.  Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side harness connector terminals.

6.CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART 2)

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

7.CHECK TCM

  1.  Replace with the same type of TCM. Refer to TM-168, "Exploded View".

  2.  Connect each connector.

  3.  Perform "DTC CONFIRMATION PROCEDURE". Refer to TM-90, "DTC Logic".

8.DETECT MALFUNCTIONING ITEMS

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

    P0841 transmission fluid pressure SEN/SW A
    Description Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolution speed as input signals, TCM changes the operating pressure of the p ...

    P0868 transmission fluid pressure
    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 ...

    Other materials:

    Parking brake shoe
    Exploded View Back plate Parking brake shoe (front) Adjuster Adjuster spring Return spring Anti-rattle spring Retainer Anti-rattle pin Toggle lever Parking brake shoe (rear) Front Apply PBC (Poly Butyl Cuprysil) grease or silicone based grease Removal ...

    Towing your vehicle
    When towing your vehicle, all State (Provincial in Canada) and local regulations for towing must be followed. Incorrect towing equipment could damage your vehicle. Towing instructions are available from a NISSAN dealer. Local service operators are generally familiar with the applicable laws an ...

    Intake door control system
    System Diagram System Description The intake doors are automatically controlled by the temperature setting, ambient temperature, in-vehicle temperature, intake temperature, amount of sunload and ON/OFF operation of the A/C compressor. SYSTEM OPERATION The intake door control judges inta ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0133