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NTC-6A: Checking ECT Sensor Calibration

  1. Turn ignition on, with engine off. Using scan tool, read Engine Coolant Temperature (ECT) sensor value. If engine coolant temperature is more than 180°F (82.2°C), allow engine coolant temperature to cool down to 150°F (65.6°C) before proceeding. If engine coolant temperature is 150°F (65.6°C) or less, start engine and monitor scan tool until engine coolant temperature reaches 180°F (82.2°C). If ECT sensor value increases smoothly, go to next step. If ECT sensor value increase is erratic, check for cooling system problems and replace ECT sensor. Perform TEST VER-2A.
  2. If coolant temperature reaches 180°F (82.2°C) or more, test is complete. If coolant temperature does not reach 180°F (82.2°C) or more, check for cooling system problems and replace ECT sensor. Perform TEST VER-2A.
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