Signal Circuit Inspection

Check Voltage
1. IG "OFF" and disconnect Fuel Level Sender B connector and PCM connector.
2. IG "ON" & ENG "OFF"
3. Measure voltage between Fuel level signal B terminal of PCM harness connector and chassis ground.
  1. Specification: Approx. 11 ~ 12 V
  Fig 1: Measuring Voltage Between Fuel Level Signal B Terminal Of PCM Connector & Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured voltage within specification?
  YES
  1. Go to 2 "Check shorted in harness" procedure.
  NO
  1. Repair short to ground in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check shorted in harness
1. IG "OFF" and disconnect Instrument cluster connector, Fuel Level Sender A & Fuel Pump Motor connector, Fuel Level Sender B connector, and PCM connector.
2. Measure resistance between Fuel level signal A and Fuel level signal B terminals of PCM harness connector.
  1. Specification : Infinite
  Fig 2: Measuring Resistance Between Fuel Level Signal A And Fuel Level Signal B Terminals Of PCM Connector
  Courtesy of HYUNDAI MOTOR CO.
3. Is the measured resistance within specification?
  YES
  1. Go to 3 "Check short to battery in harness" procedure.
  NO
  1. Repair shorted in harness and go to VERIFICATION OF VEHICLE REPAIR procedure.
Check short to battery in harness
1. IG "OFF" and disconnect Instrument cluster connector, Fuel Level Sender A & Fuel Pump Motor connector, Fuel Level Sender B connector, and PCM connector.
2. IG "ON"& ENG "OFF"
3. Measure voltage between Fuel Level Sender A terminal of PCM harness connector and chassis ground.
  1. Specification: Approx. 0 V
  Fig 3: Measuring Voltage Between Fuel Level Sender A Terminal Of PCM Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured voltage within specification?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Repair short to battery in harness and go to VERIFICATION OF VEHICLE REPAIR procedure.