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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 120 (Air Conditioning System Diagnosis (HEV)) >> DTC B1250: Direction Potentiometer Short (High) Driver >> W/Harness Inspection >> Signal Circuit Inspection

Signal Circuit Inspection

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■ Check Short to Battery in Harness 

  1. Ignition "OFF"
  2. Disconnect Driver Direction actuator and A/C control unit main harness connector.
  3. Ignition "ON"
  4. Measure voltage between Signal (F/B) terminal of Driver Direction actuator harness connector and chassis ground.

    Specification  : 0V

    Fig 1: Measuring Voltage Between Driver Direction Actuator Harness Connector And Chassis Ground
    G10591117Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured voltage within specification?

    YES 

    NO