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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 P0452: Evaporative Emission System-Pressure Sensor Low Input >> Component Inspection

Component Inspection

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

■ Fuel Tank Pressure Sensor Inspection 

  1. Start engine.
  2. Measure FTPS output voltage between signal terminal of the FTPS harness connector and chassis ground.

    Specification: Voltage changes during wide open throttle. 

    Pressure (kPa)  -6.67 0 6.67
    FTPS output voltage  0.5 V 2.5 V 4.5 V
    Fig 1: Measuring FTPS Output Voltage Between Signal Terminal Of FTPS Harness Connector And Chassis Ground
    G10606701Courtesy of HYUNDAI MOTOR AMERICA
  3. Is voltage within the specification?

    YES 

    • Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO