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Home >> Hyundai >> 2011 >> Azera Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) >> DTC P0118: Engine Coolant Temperature Circuit High Input >> Inspection/Repair >> W/Harness Inspection >> Signal Circuit Inspection

Signal Circuit Inspection

  1. IG "OFF" and disconnect ECTS connector.
  2. IG "ON".
  3. Measure voltage between signal terminal of ECTS harness connector and chassis ground.

    Specification:  Approx. 5V

    Fig 1: Measuring Voltage Between Signal Terminal Of ECTS Harness Connector And Chassis Ground
    G07251304Courtesy of HYUNDAI MOTOR CO.
  4. Is the measured voltage within specification?

    YES 

    NO 

    • If the voltage is 0V, go to "Check open in harness" as follows. If the voltage is more than 5.1V, go to "Check short to battery in harness" as follows.
  1. IG "OFF" and disconnect ECTS connector and ECM connector.
  2. Measure resistance between signal terminal of ECTS harness connector and ECTS signal terminal of ECM harness connector.

    Specification:  Below 1Ω

    Fig 2: Measuring Resistance Between Signal Terminal Of ECTS Harness Connector And ECTS Signal Terminal Of ECM Harness Connector
    G07251305Courtesy of HYUNDAI MOTOR CO.
  3. Is the measured resistance within specification?

    YES 

    NO 

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