FixVault
Home › Infiniti › 2012 › M37 Base › Repair and Diagnosis › Engine Performance › System › Engine Control System - DTCS U0101 Through P0153 › DTC P0128: Thermostat Function › Diagnosis Procedure

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 

    Check thermostat. Refer to "INSPECTION ".

    Is the inspection result normal? 

    YES: INSPECTION END

    NO: Replace thermostat. Refer to "EXPLODED VIEW ".

About FixVault