Component Inspection

The resistance check of ECTS component is for finding whether open circuit is in the component.

Check ECTS
1. Measure resistance between terminal 1 and 2 of sensor connector (To sensor side)
  Specification:
  
  20°C (68°F): 2.27~2.73kΩ
  
  80°C (176°F): 0.29~0.32kΩ
  
  Fig 1: Measuring Resistance Between Terminal 1 And 2 Of Sensor Connector
  Courtesy of HYUNDAI MOTOR CO.
2. Does each resistance indicate continuity circuit?
  YES
  - Go to "Check PCM" below.
  NO
  - Open circuit ECTS.
  - Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure
Check PCM
The purpose of checking ECM is to determine whether there is any malfunction of PCM.
1. Ignition "OFF"
2. Connect scan tool and Engine "ON "
3. Select simulation function on scan tool.
4. Simulate voltage at terminal 1 of ECT sensor signal connector.
5. Verify ECTS voltage to change while raising or lowering simulation voltage with scan tool within 0.5~3.5V
  Specification: If the data is changeable as simulation voltage changes, it's OK
  
  Fig 2: Identifying Scan Tool Display (Simulate Voltage)
  Courtesy of HYUNDAI MOTOR CO.
6. Is ECT sensor signal value changed according to simulation voltage ?
  YES
  - Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then 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 then go to "VERIFICATION OF VEHICLE REPAIR " procedure.