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Home >> Nissan-Datsun >> 2007 >> X-Trail LE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P1148 To P2138 >> DTC P1148 Closed Loop Control >> 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: 

WITH CONSULT-II 

  1. Start engine and warm it up to normal operating temperature.
  2. Select "DATA MONITOR" mode with CONSULT-II.
  3. Hold engine speed at 2, 000 rpm and check one of the following.
    • "HO2S1 (B1)" voltage should go above 0.70V at least once.
    • "HO2S1 (B1)" voltage should go below 0.21V at least once.

      If the check result is NG, perform "DIAGNOSTIC PROCEDURE ".

      If the check result is OK, perform the following step.

  4. Let engine idle at least 5 minutes.
  5. Maintain the following condition at least 50 consecutive seconds.
    Fig 1: Generic Scan Tool - Data Monitor
    G06152810Courtesy of NISSAN MOTOR CO., U.S.A.
    ENGINE SPEED REFERENCE CHART

    B/FUEL SCHDL 2.75 msec or more
    ENG SPEED More than 1, 600 rpm
    Shift lever Suitable position
    VHCL SPEED SE More than 70 km/h (43 MPH)

    During this test, P0132 may be displayed on CONSULT-II screen.

  6. If DTC is detected, go to "DIAGNOSTIC PROCEDURE ".