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Home >> Nissan-Datsun >> 2005 >> Quest Base >> Repair and Diagnosis >> Engine Performance >> Engine Control System >> DTC P0117, P0118: ECT Sensor >> Component Inspection >> Engine Coolant Temperature Sensor
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Engine Coolant Temperature Sensor

  1. Check resistance between engine coolant temperature sensor terminals 1 and 2 as shown in the figure.
    Fig 1: Checking Engine Coolant Temperature Sensor Resistance
    G02446923Courtesy of NISSAN MOTOR CO., U.S.A.

    < Reference data> 

    ENGINE COOLANT TEMPERATURE SENSOR RESISTANCE TABLE

    Engine coolant temperature °C (°F) Resistance kΩ
    20(68) 2.1 - 2.9
    50(122) 0.68-1.00
    90(194) 0.236 - 0.260
    Fig 2: Resistance/Temperature Graph
    G02446924Courtesy of NISSAN MOTOR CO., U.S.A.
  2. If NG, replace engine coolant temperature sensor.
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