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Home >> Nissan-Datsun >> 2009 >> Sentra SE-R >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Continuously Variable Transmission (CVT) >> Service Information >> DTC P1778 Step Motor - Function >> DTC Confirmation Procedure
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DTC Confirmation Procedure

CAUTION:
  • Always drive vehicle at a safe speed.
  • Before starting "DTC Confirmation Procedure", confirm "Hi" or "Mid" or "Low" fixation by "PRI SPEED" and "VEHICLE SPEED" on "DATA MONITOR MODE".
  • If hi-geared fixation occurred, go to "DIAGNOSIS PROCEDURE ".
NOTE: If "DTC Confirmation Procedure" has been previously performed, always turn ignition switch OFF and wait at least 10 seconds before performing the next test.

After the repair, touch "ERASE" on "SELF-DIAG RESULTS" and then perform the following procedure to confirm the malfunction is eliminated.

WITH CONSULT-III 

  1. Turn ignition switch ON and select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
  2. Make sure 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) 

  3. Select "DATA MONITOR" mode for "TRANSMISSION" with CONSULT-III.
  4. Start engine and maintain the following conditions for at least 30 consecutive seconds.

    TEST START FROM 0 km/h (0 MPH) 

    CONSTANT ACCELERATION: Keep 30 sec or more 

    VEHICLE SPEED: 10 km/h (6 MPH) or more 

    ACC PEDAL OPEN: More than 1.0/8 

    RANGE: "D" position 

    ENG SPEED: 450 RPM or more 

  5. If DTC is detected, go to "DIAGNOSIS PROCEDURE ".

WITH GST 

Follow the procedure "WITH CONSULT-III".