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Home >> Hyundai >> 2011 >> Azera GLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0463: Fuel Level Sensor 'A' Circuit High Input >> Inspection/Repair >> W/Harness Inspection >> Signal Circuit Inspection
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Signal Circuit Inspection

  1. IG "OFF" and disconnect Fuel Sub Sender connector and ECM connector.
  2. IG "ON".
  3. Measure voltage between Total signal terminal of Fuel Sub Sender harness connector and chassis ground.

    Specification:  Approx. 0V

    Fig 1: Measuring Voltage Between Total Signal Terminal Of Fuel Sub Sender Harness Connector And Chassis Ground
    G07252017Courtesy of HYUNDAI MOTOR CO.
    Fig 2: Identifying ECM, Instrument Cluster And Fuel Sender & Fuel Pump Motor Connector Terminals
    G07252018Courtesy of HYUNDAI MOTOR CO.
  4. Is the measured voltage within specification?

    YES 

    • Go to "Check open in harness" as follows.

    NO 

  1. IG "OFF" and disconnect Instrument cluster connector and Fuel Sub Sender connector.
  2. Measure resistance between Total signal terminal of Fuel Sub Sender harness connector and Fuel input terminal of Instrument cluster harness connector.

    Specification:  Below 1Ω

    Fig 3: Measuring Resistance Between Total Signal Terminal Of Fuel Sub Sender Harness Connector And Fuel Input Terminal Of Instrument Cluster Harness Connector
    G07252019Courtesy of HYUNDAI MOTOR CO.
    Fig 4: Identifying ECM, Instrument Cluster And Fuel Sender & Fuel Pump Motor Connector Terminals
    G07252020Courtesy of HYUNDAI MOTOR CO.
  3. Is the measured resistance within specification?

    YES 

    NO 

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