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Home >> Nissan-Datsun >> 2005 >> X-Trail LE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1148 To P2138 >> DTC P1574 ASCD Vehicle Speed Sensor >> DTC Confirmation Procedure
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DTC Confirmation Procedure

CAUTION: Always drive vehicle at a safe speed.
NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

TESTING CONDITION: 

Step   3  may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road test is expected to be easier, it is unnecessary to lift the vehicle. 

WITH CONSULT-II 

  1. Start engine.
  2. Select "DATA MONITOR" mode with CONSULT-II.
  3. Drive the vehicle at more than 40 km/h (25 MPH).
  4. If DTC is detected, go to "DIAGNOSTIC PROCEDURE ".
Fig 1: Screen Display - Data Monitor
G06152895Courtesy of NISSAN MOTOR CO., U.S.A.

WITH GST 

Follow the procedure "WITH CONSULT-II" above.



CAUTION: Always drive vehicle at a safe speed.
NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

WITH CONSULT-II 

  1. Turn ignition switch ON.
  2. Select "P/N POSI SW" in "DATA MONITOR" mode with CONSULT-II. Then check the "P/N POSI SW" signal under the following conditions.
    DATA MONITOR REFERENCE CHART

    Position (Selector lever) Known-good signal
    N or P position (A/T)
    Neutral position (M/T)
    ON
    Except above position OFF
    Fig 1: Generic Scan Tool - Data Monitor
    G06152896Courtesy of NISSAN MOTOR CO., U.S.A.

    If NG, go to "DIAGNOSTIC PROCEDURE ".

    If OK, go to following step.

  3. Select "DATA MONITOR" mode with CONSULT-II.
  4. Start engine and warm it up to normal operating temperature.
  5. Maintain the following conditions for at least 60 consecutive seconds.
    ENGINE SPEED REFERENCE

    ENG SPEED More than 1, 500 rpm
    COOLAN TEMP/S More than 70°C (158°F)
    B/FUEL SCHDL 3.0 - 31.8 msec
    VHCL SPEED SE More than 64 km/h (40 MPH)
    Shift lever position Suitable position
  6. If 1st trip DTC is detected, go to "DIAGNOSTIC PROCEDURE ".
Fig 2: Generic Scan Tool - Engine Speed
G06152897Courtesy of NISSAN MOTOR CO., U.S.A.