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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 125 (Engine Control System Diagnosis (1 Of 2) (HEV)) >> DTC P0119: Engine Coolant Temperature Circuit Intermittent >> System Inspection

System Inspection

WARNING: This page is about a different variant/trim than selected.

■ Coolant Level Inspection 

  1. Check the cooling system coolant level.
  2. Is the coolant in the reservoir at the proper level?

    YES 

    • Go to next step as below.

    NO 

■ Thermostat Inspection 

  1. Check if the thermostat bypass valve is stuck in the open position or if the correct type of thermostat was installed. Replace thermostat as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  2. Check the valve opening temperature of the thermostat.

    Specification (Valve opening temperature):  80~84°C(176~183°F)

  3. If the opening temperature is not as specified, Replace thermostat as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    If OK, go to next step as below.

■ ECT Sensor Inspection 

  1. Ignition "OFF"
  2. Disconnect ECTS connector.
  3. Measure the resistance between signal terminal and ground terminal of ECTS connector. (Component side)
    TEMPERATURE RESISTANCE SPECIFICATION

    Temp.(°C) Temp.(°F) Resistance(kΩ) Temp.(°C) Temp.(°F) Resistance(kΩ)
    -20 -4 14.1 ~ 16.8 40 104 Approx. 1.2
    0 32 Approx. 5.8 60 140 Approx. 0.6
    20 68 2.3 ~ 2.6 80 176 Approx. 0.3
    Fig 1: Measuring Resistance Between Signal Terminal And Ground Terminal Of ECTS Connector (Component Side)
    G10606429Courtesy of HYUNDAI MOTOR AMERICA
  4. Is resistance within the specification?

    YES 

    • Go to next step as below.

NO