Signal Circuit Inspection

■ Check for short to battery in signal harness 

1. Disconnect PCM connector.
2. Ignition "ON" & Engine "OFF"
3. Measure the voltage between signal terminal of the sensor harness connector and chassis ground.

   Specification:  Approx. 0V

   Fig 1: Measuring Voltage Between Signal Terminal Of Sensor Harness Connector And Chassis Ground

   Courtesy of HYUNDAI MOTOR AMERICA
4. Is voltage within the specification?

   YES 

   • Go to "TERMINAL AND CONNECTOR INSPECTION " procedure.

   NO 

   • Check for short to battery or open in signal harness. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Check for open in signal harness 

1. Ignition "OFF"
2. Measure the resistance between signal terminal of ECTS harness connector and signal connector of PCM harness connector.

   Specification:  Approx. 0Ω

   Fig 2: Measuring Resistance Between Signal Terminal Of ECTS Harness Connector And Signal Connector Of PCM Harness Connector

   Courtesy of HYUNDAI MOTOR AMERICA
3. Is the resistance within the specification?

   YES 

   • Go to next step as below.

   NO 

   • Check for open in signal harness. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.