Signal Circuit Inspection

■ Check voltage
1. IG "OFF" and disconnect ECTS connector.
2. IG "ON"
3. Measure voltage between signal terminal of ECTS harness connector and chassis ground.
  Specification: Approx. 3.3V
  
  Fig 1: Measuring Voltage Between Signal Terminal Of ECTS Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured voltage within specification?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - If the voltage is 0V, go to " CHECK OPEN IN HARNESS" as follows. If the voltage is more than 5.1V, repair short to battery in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
■ Check open in harness
1. IG "OFF" and disconnect ECTS connector and PCM connector.
2. Measure resistance between signal terminal of ECTS harness connector and ECTS signal terminal of PCM harness connector.
  Specification: below 1Ω
  
  Fig 2: Measuring Resistance Between Signal Terminal Of ECTS Harness Connector And ECTS Signal Terminal Of PCM Harness Connector
  Courtesy of HYUNDAI MOTOR AMERICA
3. Is the measured resistance within specification?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - Repair open in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.