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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 P0122: Throttle/Pedal Position Sensor/Switch 'A' Circuit Low Input >> W/Harness Inspection >> Power Circuit Inspection

Power Circuit Inspection

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

■ Power Circuit Preliminary Inspection 

  1. IG KEY OFF.
  2. Disconnect etc. connector.
  3. IG KEY ON.
  4. Measure voltage between TPS power circuit of etc. harness connector and chassis ground.

    Specification:  Approx. 5V

    Fig 1: Measuring Voltage Between TPS Power Circuit Of etc. Harness Connector And Chassis Ground
    G10606438Courtesy of HYUNDAI MOTOR AMERICA
  5. Is voltage within the specification?

    YES 

    NO 

    • Go to next procedure.

■ Check for Short to Ground in Power Circuit 

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

    Specification:  Infinite

    Fig 2: Measuring Resistance Between TPS Power Terminal Of etc. Harness Connector And Chassis Ground
    G10606439Courtesy of HYUNDAI MOTOR AMERICA
  5. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO 

■ Check Open in Power Circuit 

  1. IG KEY OFF.
  2. Disconnect etc. connector and PCM connector.
  3. Measure resistance between both ends of TPS Power line.

    Specification:  Below 1Ω

    Fig 3: Measuring Resistance Between Both Ends Of TPS Power Line
    G10606440Courtesy of HYUNDAI MOTOR AMERICA
  4. Is resistance within specification?

    YES 

    • Go to next procedure.

    NO