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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1002 (Automatic Transmission (Re0F09B)) >> Component Diagnosis >> P0840 Transmission Fluid Pressure Sensor A (Sec Pressure Sensor) >> DTC Logic >> DTC Confirmation Procedure

DTC Confirmation Procedure

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
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-III

    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 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-III".

    Is "P0840 TR PRS SENS/A CIRC" detected? 

    YES: Go to "DIAGNOSIS PROCEDURE ".

    NO: Refer to "INTERMITTENT INCIDENT ".

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