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Component Inspection

Check ECTS resistance.

IG "OFF".
Disconnect ECTS connector.

Measure resistance between terminal 1 and 3 of ECTS harness connector. (Component Side)

ENGINE COOLANT TEMPERATURE SENSOR SPECIFICATION

Temperature		Resistance [kΩ]
°C	°F	Resistance [kΩ]
-40	-40	48.14kΩ
-20	-4	14.13 ~ 16.83kΩ
0	32	5.79kΩ
20	68	2.31 ~ 2.59kΩ
40	104	1.15kΩ
60	140	0.59kΩ
80	176	0.32kΩ

Fig 1: Measuring Resistance Between Terminal 1 & 3 Of ECTS Harness Connector

G04801596

Courtesy of HYUNDAI MOTOR CO.

Is the measured resistance within specification?
YES : --> Go to "Check ECM/PCM" as follows.

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 ECM/PCM.
1. IG "OFF" and disconnect ECTS connector.
2. Connect scantool and Key "ON".
3. Select simulation function on scantool.
4. Simulate voltage at terminal 1 of ECTS signal connector.
  
  Fig 2: Scantool Display - Simulation Of Voltage
  Courtesy of HYUNDAI MOTOR CO.
5. Does the signal value of ECTS change 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 ECM/PCM and check for proper operation.
  
  --> If the problem is corrected, replace ECM/PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.