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Home >> Nissan-Datsun >> 2003 >> Sentra Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 2388 (Engine Control System - DTCS U1000 To P0159) >> DTC P0128 Thermostat Function >> DTC Confirmation Procedure >> With Consult-II

With Consult-II

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  1. Replace thermostat with new one. Refer to "WATER INLET AND THERMOSTAT ASSEMBLY ". 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.
    Fig 1: Identifying CONSULT-II Display - DATA MONITOR
    G04894667Courtesy of NISSAN NORTH AMERICA, INC.
  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), 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.
    VEHICLE SPEED CONDITION CHART

    VHCL SPEED SE 80 - 120 km/h (50 - 75 MPH)

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

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