Control Circuit Inspection

Check Voltage
1. IG "OFF" and disconnect Cooling fan relay (low).
2. IG "ON".
3. Measure voltage between Cooling fan relay control (Low) terminal of Cooling fan relay (low) harness connector and chassis ground.
  Specification: Approx. 2.5V
  
  Fig 1: Measuring Voltage Between Cooling Fan Relay Control (Low) Terminal And Chassis Ground
  Courtesy of HYUNDAI MOTOR AMERICA
  
  Fig 2: Cooling Fan Motor Connector Terminal Identification
  Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured voltage within specifications?
  YES
  - Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Repair open or short in control circuit, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.