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Home >> Acura >> 1996 >> 2.5TL >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Testing >> Engine Coolant Temperature (ECT) Sensor Test

Engine Coolant Temperature (ECT) Sensor Test

  1. Turn ignition off. Remove climate control unit and disconnect 20-pin connector. Disconnect ECT sensor connector. Check for continuity in Red/White wire between climate control unit connector and ECT sensor connector. If continuity does not exist, repair open Red/White wire between climate control unit and ECT sensor.
  2. If continuity exists, check for loose wires or poor connections at climate control unit 20-pin connector and ECT sensor connector. If connections are okay, substitute known good climate control unit and recheck. If continuity does not exist with known good climate control unit, replace original climate control unit.
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