Signal Circuit Inspection

Check for open or short to ground in signal circuit
1. Ignition "ON" & Engine "OFF"
2. Measure voltage between terminal 2 of the sensor harness connector and chassis ground
  Specification: Approx. 5V
  
  Fig 1: Measuring Voltage Between Terminal 2 Of Sensor Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
3. Is voltage within the specification?
  YES
  - Go to 2
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for short to power in signal circuit
1. Ignition "OFF"
2. Disconnect ECM connector
3. Ignition "ON" & Engine "OFF"
4. Measure voltage between terminal 2 of sensor harness connector and chassis ground
  Specification: Approx. 0V
  
  Fig 2: Measure Voltage Between Terminal 2 Of Sensor Harness Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
5. Is voltage within the specification?
  YES
  - Go to TERMINAL AND CONNECTOR INSPECTION
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.