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Home >> Nissan-Datsun >> 2004 >> Frontier Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System - KA24DE >> DTC P1148: Closed Loop Control >> DTC Confirmation Procedure >> Testing Condition: >> With CONSULT-II
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With CONSULT-II

  1. Start engine and warm it up to normal operating temperature.
  2. Select "DATA MONITOR" mode with CONSULT-II.
    Fig 1: Scan Tool Display - Data Monitor
    G00855973Courtesy of NISSAN MOTOR CO., U.S.A.
  3. Hold engine speed at 2,000 RPM and check the following.
    • "HO2S1 (B1)" voltage should go above 0.70V at least once.
    • "HO2S1 (B1)" voltage should go below 0.21V at least once.
      Fig 2: Specification Chart
      G00855974Courtesy of NISSAN MOTOR CO., U.S.A.

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

      If the result is OK, perform the following step.

  4. Let engine idle at least 3 minutes.
  5. Maintain the following condition at least 50 consecutive seconds.

    During this test, DTC P0134 may be displayed on CONSULT-II screen. 

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