Component Inspection

Check ECTS

Ignition "OFF"
Disconnect ECTS connector.

Measure resistance between terminals 1 and 3 of the ECT sensor (to ECT sensor side).

Specification: Error range is 2~3%

RESISTANCE SPECIFICATION

Temperature(°C/°F)	-30/-22	-20/-4	0/32	20/68	40/104	60/140	80/176	100/212	110/230
Resistance(kΩ)	26.74	15.48	5.79	2.45	1.148	0.587	0.322	0.188	0.147
Voltage(V)	4.39	4.17	3.48	2.56	1.68	1.04	0.63	0.39	0.31

Is the measured resistance within specifications ?
Yes
- Go to "Check PCM" as below.
NO
- Substitute with a known - good ECTS and check for proper operation.
  If the problem is corrected, replace ECTS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Check PCM
1. Ignition "OFF"
2. Connect scantool and Ignition "ON" & Engien "OFF"
3. Select simulation function on scantool.
4. Simulate voltage at terminal 3 of ECT sensor signal connector.
  
  Fig 1: Selecting Simulation Function On Scantool
  Courtesy of KIA MOTORS AMERICA, INC.
5. Does the signal value of ECT sensor changes according to simulation voltage?
  Yes
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known - good PCM and check for proper operation.
    If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.