Control Circuit Inspection

Check short in harness
1. Ignition "OFF" and disconnect the main relay and ECM connector.
2. Measure the resistance between control terminal of main relay harness connector and chassis ground.
  Specification : Infinite
  
  Fig 1: Measuring Resistance Between Control Terminal Of Main Relay Harness Connector & Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
3. Is the measured resistance within specification?
  YES
  - Go to "Check open in harness " procedure.
  NO
  - Repair short in control harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check open in harness
1. Ignition "OFF" and disconnect the main relay and ECM connector.
2. Measure the resistance between control terminal of main relay harness connector and main relay control terminal of ECM harness connector.
  Specification : Approx. below 1Ω
  
  Fig 2: Measuring Resistance Between Control Terminal Of Main Relay Harness Connector & Main Relay Control Terminal Of ECM Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
3. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair open in control harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.