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Home >> Kia >> 2007 >> Rondo Base >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures (1 Of 2) - 2.4L >> DTC P0125 Insufficient Coolant Temperature For Closed Loop Fuel Control >> System Inspection
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System Inspection

  1. 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

      NO 

  2. 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
  3. ECT Sensor Inspection
    1. Ignition "OFF"
    2. Disconnect ECTS connector
    3. Measure resistance between terminals 1 and 3 of the sensor connector (Component side)

      SPECIFICATION : 

      RESISTANCE SPECIFICATION

      Temp. (°C) Temp. (°F) Resistance (Ω)
      -20 -4 14.1 ~ 16.8
      0 32 Approx. 5.8
      20 68 2.3 ~ 2.6
      40 104 Approx. 1.2
      60 140 Approx. 0.6
      80 176 Approx. 0.3
      Fig 1: Measuring Resistance Between Terminals 1 And 3 Of Sensor Connector (Component Side)
      G05182066
    4. Is resistance within the specification?

      YES 

      NO 

      • Check ECTS for contamination, deterioration, or damage. Substitute with a known-good ECTS and check for proper operation. If the problem is corrected, replace ECTS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure
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