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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 64 (HEV Motor System Diagnosis (HEV)) >> DTC P0A7A: Generator Inverter Performance >> W/Harness Inspection >> Terminal and Connector Inspection

Terminal and Connector Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Many malfunctions in the electrical system are caused by poor harness(es) and terminal condition. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
  2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
  3. Has a problem been found?

    YES 

    NO 

    • Go to Next procedure.

■ Check for Open in Harness 

  1. Ignition OFF
  2. Disconnect safety plug from the main battery (Wait for 5 minutes after OFF).
  3. Disconnect HSG Motor Cable and MCU main harness connector.
  4. Measure resistance between Cable terminal of HSG Motor Cable harness connector and Cable terminal of MCU harness connector.

    Specification:  below 1

    Fig 1: Measuring Resistance Between HSG Motor Cable Harness Connector And MCU Harness Connector
    G10602476Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured resistance within specifications?

    YES 

    • Go to Next procedure.

    NO 

■ Check for Short in Harness 

  1. Ignition OFF
  2. Disconnect safety plug from the main battery (Wait for 5 minutes after OFF).
  3. Disconnect HSG Motor Cable and MCU main harness connector.
  4. Measure resistance between Cable terminal of HSG Motor Cable harness connector and Cable terminal of MCU harness connector.

    Specification:  Infinity (or upper 10M)

    Fig 2: Measuring Resistance Between HSG Motor Cable Harness Connector And MCU Harness Connector
    G10602477Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured resistance within specifications?

    YES 

    • Go to Next procedure.

    NO