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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 39 (Engine Control System Diagnosis - 1.6L (2 Of 3) (Except HEV)) >> DTC P0221: Throttle/Pedal Position Sensor/Switch 'B' Circuit Range/Performance >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  1. IG KEY "OFF".(Don't disconnect sensors.)
  2. Select "vehicle scopemeter" in the menu, and connect channel A, B of GDS with signal terminal TPS1, 2 harness connector.
  3. IG KEY "ON". And check the signal waveforms with stepping on accelerator pedal.

    Specification:  Refer to SIGNAL WAVEFORM & DATA 

  4. Is the measured signal waveform O.K?

    YES 

    • Many malfunctions in the electrical system are caused by poor harness(es) and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage. So, check poor connections and the related circuit between ECM and component thoroughly. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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