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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 42 (Engine Control System Diagnosis - 2.0L (2 Of 3) (Except HEV)) >> DTC P0454: Evaporative Emission System-Pressure Sensor Intermittent >> Component Inspection

Component Inspection

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

■ Fuel Tank Pressure Sensor Inspection 

  1. IG "ON".
  2. Disconnect hose connecting FTPS to the Fuel Tank.
  3. Using a vacuum pump, apply vacuum to the hose connecting to FTPS.
  4. Measure FTPS output voltage between signal terminal of the FTPS harness connector and chassis ground.

    Specification: Voltage increases proportionally with decreasing pressure. 

    Pressure (kPa) Out Voltage (V)
    -6.67 0.5
    0 2.5
    6.67 4.5
  5. 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 

    • Substitute with a known - good FTPS and check for proper operation. If the problem is corrected, replace FTPS and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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