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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 P0234: Turbocharger/Supercharger Overboost Condition >> Component Inspection

Component Inspection

WARNING: This page is about a different variant/trim than selected.
  1. IG "OFF". Connect a GDS and oscilloscope.
  2. Connect CH A, B probe to (+),(-) control terminal of EWGA connector.
  3. Warm up the engine to normal operating temperature.
  4. Measure signal waveform of EWGA control together by actuating the throttle.

    Specification:  Signal waveform will be displayed as follows.

  5. Is the measured voltage within specification?

    YES 

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

    NO 

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