Inspection Procedure

1. Connect a Hi-Scan (Pro) to the data link connector.
2. Turn ignition to ON position and monitor other DTCs.

Is any DTC relating to ECTS set?

1. No:  Go to next step.
2. Yes: Do all repairs associated with those codes before proceeding with this procedure.

1. Check engine coolant level.
2. Measure the specific gravity of the coolant with a hydrometer.

Is engine coolant normal?

1. Yes:  Go to next step.
2. No: Replace it.

1. Remove the thermostat.
2. Check if the thermostat is stuck or damaged.

   Specification:

   Fig 1: Thermostat Specification

   Courtesy of KIA MOTORS AMERICA, INC.

Is thermostat normal?

1. Yes:  Go to next step.
2. No: Replace it.
3. CHECK ECTS RESISTANCE
   1. Turn ignition switch to OFF and disconnect ECTS connector.
   2. Measure resistance between the terminals 1 and 3 of ECTS connector.

      Specification (ECTS resistance):

      Fig 2: ECTS Resistance Chart

      Courtesy of KIA MOTORS AMERICA, INC.
      Fig 3: Checking ECTS Resistance

      Courtesy of KIA MOTORS AMERICA, INC.

Is resistance within specification?

1. Yes:  Proceed with ECM PROBLEM INSPECTION PROCEDURE .
2. No: Replace ECTS.