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Home >> Nissan-Datsun >> 2011 >> Cube Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTC U0101 Through DTC P0172 (Except For CALIFORNIA) >> DTC P0128: Thermostat Function >> Diagnosis Procedure
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Diagnosis Procedure

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR

    Refer to "COMPONENT INSPECTION ".

    Is the inspection result normal? 

    YES: Go to 2.

    NO: Replace engine coolant temperature sensor. Refer to "EXPLODED VIEW ".

  2. CHECK THERMOSTAT

    Refer to "INSPECTION ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace thermostat. Refer to "REMOVAL AND INSTALLATION ".

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