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Home >> Nissan-Datsun >> 2004 >> Frontier Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control System - KA24DE >> DTC P0128: Thermostat Function >> DTC Confirmation Procedure >> Testing Condition: >> With Consult-II
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With Consult-II

  1. Replace thermostat with new one. Refer to THERMOSTAT . Use only a genuine NISSAN thermostat as a replacement. If an incorrect thermostat is used, the MIL may come on.
  2. Turn ignition switch "ON".
  3. Select "COOLAN TEMP/S" in "DATA MONITOR" mode with CONSULT-II.
  4. Check that the "COOLAN TEMP/S" is above 60° C (140° F).

    If it is below 60° C (140° F), go to following step.

    If it is above 60° C (140° F), stop engine and cool down the engine to less than 60° C (140° F), then retry from step  1.

  5. Drive vehicle for 10 consecutive minutes under the following conditions.
    Fig 1: VHCL Speed SE Chart
    G00857088Courtesy of NISSAN MOTOR CO., U.S.A.

    If 1st trip DTC is detected, go to DIAGNOSTIC PROCEDURE .

    Fig 2: Scan Tool Display - Data Monitor
    G00857089Courtesy of NISSAN MOTOR CO., U.S.A.