Signal Circuit Inspection

Check for open in harness
1. Ignition "ON" & engine "OFF".
2. Disconnect rainsensor and BCM.
3. Measure resistance between terminal "C3" of BCM and terminal "3" of rainsensor.
  Specification: Approx. 0 Ω
  
  Fig 1: Measuring Resistance Between Terminal C3 Of BCM And Terminal 3 Of Rainsensor
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured resistance within specifications?
  YES
  - Go to " 2 Check for short in harness" procedure.
  NO
  - Check for open in signal harness. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check for short in harness
1. Ignition "ON" & engine "OFF".
2. Disconnect rainsensor.
3. Measure resistance between terminal "3" of rainsensor and chassis ground.
  Specification: Approx. ∞ Ω
  
  Fig 2: Measuring Resistance Between Terminal 3 Of Rainsensor And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured resistance within specifications?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Check for short in signal harness. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.