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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 P0123: Throttle/Pedal Position Sensor/Switch 'A' Circuit High Input >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Select 'Actuation Test' mode and execute 'etc. motor' item.
    Fig 1: Scantool Display - Signal Waveform Of Throttle Position Voltage
    G10606450Courtesy of HYUNDAI MOTOR AMERICA
    Fig 2: Scantool Display - etc. Motor On Actuation Test
    G10606451Courtesy of HYUNDAI MOTOR AMERICA

    During 'etc. Motor' test, TPS1 and TPS2 show symmetrical movements.

  2. Is the waveform normal?

    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 

    • Check etc. for contamination, deterioration, or damage. Substitute with a known-good etc. and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    NOTE: It is necessary to perform the TPS adaptation procedure after the etc. assembly or PCM replacing.
    TPS adaptation procedure
    Ignition "OFF" and then "ON" without cranking. Wait for 10 seconds under enable conditions.
    Enable conditions: Battery >10V & Intake Air Temp. >5.3°C(41.5°F) & 5.3°C(41.5°F) < Engine Coolant Temp. < 99.8°C (211.6°F)