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Home >> Hyundai >> 2017 >> Sonata Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 48 (Engine Control System Diagnosis - 2.0L (3 Of 3) (Except HEV)) >> DTC P2128: Accelerator Position Sensor 2 Signal Circuit High Input >> Component Inspection

Component Inspection

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

■ Accelerator Pedal Rod Inspection 

  1. Verify that the accelerator pedal operate freely without binding between full closed and wide open position by operating the accelerator pedal.
  2. Check for poor carpet fit under the accelerator controls pedal.
  3. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure. If OK, go to next step below.

■ Accelerator Pedal Voltage Inspection 

  1. Connect APS connector.
  2. IG "ON".
  3. Check sensor data below.
    Fig 1: Scantool Display - Sensor Data
    G11992870Courtesy of HYUNDAI MOTOR AMERICA
  4. Data Analysis
    Condition GDS Sensor Data
    APS 1 APS 2
    IG Key "ON & Engine OFF" Output voltages of APS1 and APS2 are in proportion to accelerating. APS2 output voltage is half of APS1 output voltage.
    Release a pedal fully 0.58~0.93 V 0.29~0.47 V
    Depress a pedal fully 3.85~4.35 V 1.93~2.18 V
  5. Is data in accordance with "Data Analysis"?

    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 component and check for proper operation. If the problem is corrected, replace component and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.