Component Inspection

Check ECTS resistance

IG "OFF".
Disconnect ECTS connector.

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

Specification:

TEMPERATURE RESISTANCE SPECIFICATION CHART

Temp. [°C]	Resistance [Ω]
-20	15.48 K ± 1.35 K
20	2.45 K ± 0.14 K
110	0.1471 ± 0.002

Fig 1: Measuring Resistance Between Terminal 1 And 3 Of ECTS Harness Connector (Component Side)

G06881326

Courtesy of HYUNDAI MOTOR CO.

Is the measured resistance within specification?
YES
1. Go to " 2 Check ECM" as follows
NO
1. 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
1. IG "OFF" and disconnect ECTS connector.
2. Connect scan tool and Key "ON".
3. Select simulation function on scan tool.
4. Simulate voltage at terminal 1 of ECTS signal connector.
  
  Fig 2: Screen Display - Engine Coolant Temperature Sensor Voltage
  Courtesy of HYUNDAI MOTOR CO.
5. Does the signal value of ECTS change according to simulation voltage?
  YES
  1. 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
  1. Substitute with a known - good ECM and check for proper operation.
    If the problem is corrected, replace ECM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.