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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 57 (Engine Control System Diagnosis (2 Of 2) (HEV)) >> DTC P2122: Throttle/Pedal Position Sensor/Switch 'D' Circuit Low Input >> W/Harness Inspection >> Power Circuit Inspection

Power Circuit Inspection

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

■ Check for Short to Ground in Power Circuit 

  1. IG KEY OFF.
  2. Disconnect PCM and APS harness connector.
  3. IG KEY ON.
  4. Measure resistance between APS1 power terminal of APS harness connector and chassis ground.

    Specification:  Infinite

    Fig 1: Measuring Resistance Between APS1 Power Terminal Of APS Harness Connector And Chassis Ground
    G10606886Courtesy of HYUNDAI MOTOR AMERICA
  5. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO 

■ Check for Open in Power circuit 

  1. IG KEY OFF.
  2. Disconnect APS harness connector.
  3. IG KEY ON.
  4. Measure voltage between APS1 power terminal of APS harness connector and chassis ground.

    Specification:  Approx. 5V

    Fig 2: Measuring Voltage Between APS1 Power Terminal Of APS Harness Connector And Chassis Ground
    G10606887Courtesy of HYUNDAI MOTOR AMERICA
  5. Is voltage within specification?

    YES 

    • Go to next procedure.

    NO 

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