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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 149 (Engine Control System Diagnosis - 2.0L (1 Of 3)) >> DTC P0128-00: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) >> Component Inspection >> Thermostat Heater Check

Thermostat Heater Check

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
  1. Turn the ignition switch "OFF". Disconnect thermostat heater connector.
  2. Measure the resistance between power and ground terminal of thermostat heater (component side).

    Specification:  8 ± 1.6 Ω (at 20°/68°F)

  3. Is the measured resistance within specification?

    YES 

    NO 

    • Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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