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Home >> Hyundai >> 2005 >> Elantra GLS, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Troubleshooting Procedures >> DTC P0036: Ho2S Heater Control Circuit (Bank 1 / Sensor 2) >> Power Supply Circuit Inspection

Power Supply Circuit Inspection

  1. Ignition "OFF".
  2. Disconnect HO2S sensor connector.
  3. Ignition "ON" & Engine "OFF"
  4. Measure voltage between terminal 3 of the HO2S heater harness connector and chassis ground.

    Specification : B+

    Fig 1: Measuring Voltage Between Terminal 3 Of HO2S Heater Harness Connector And Chassis Ground
    G03842653Courtesy of HYUNDAI MOTOR CO.
  5. Is voltage within the specification?

    YES 

    NO 

    • Check for an open in the power supply circuit between the main relay and the HO2S

      Especially check for "10A Sensor fuse" is installed and not blown.

      Repair as necessary and go to VERIFICATION OF VEHICLE REPAIR  procedure.

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