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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 125 (Engine Control System Diagnosis (1 Of 2) (HEV)) >> DTC P0453: Evaporative Emission System-Pressure Sensor High Input >> W/Harness Inspection >> Control Circuit Inspection

Control Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ Check for Open in Signal Circuit 

  1. IG "OFF".
  2. Disconnect FTPS harness connector.
  3. IG "ON".
  4. Measure voltage between signal terminal of FTPS harness connector and chassis ground.

    Specification:  Approx. 4.8V

    Fig 1: Measuring Voltage Between Signal Terminal Of FTPS Harness Connector And Chassis Ground
    G10606704Courtesy of HYUNDAI MOTOR AMERICA
  5. Is voltage within the specification?

    YES 

    • Go to next step as below.

    NO 

■ Check for Short to Power in Signal Circuit 

  1. IG "OFF".
  2. Disconnect FTPS harness connector and PCM harness connector.
  3. IG "ON".
  4. Measure voltage between signal terminal of FTPS harness connector and chassis ground.

    Specification:  Approx. 0V

    Fig 2: Measuring Voltage Between Signal Terminal Of FTPS Harness Connector And Chassis Ground
    G10606705Courtesy of HYUNDAI MOTOR AMERICA
  5. Is voltage within the specification?

    YES 

    • Go to next step as below.

    NO 

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