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Home >> Mitsubishi >> 1998 >> Eclipse GS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.0L Non-Turbo >> Diagnostic Tests >> DTC 33: Engine Is Cold Too Long

DTC 33: Engine Is Cold Too Long

NOTE: For terminal identification, see TERMINAL IDENTIFICATION  . For circuit and wire color identification, see WIRING DIAGRAMS article.
  1. Remove thermostat. Check that valve closes fully at room temperature. Place thermostat in container of hot water. Raise water temperature and check that thermostat begins to open at 195°F (90.5°C) and is full open at 216°F (102°C). Valve lift is .31" (8 mm) from full closed to full open. If thermostat is within specification, go to next step. Replace thermostat if not within specification.
  2. Disconnect Engine Coolant Temperature (ECT) sensor connector. Check resistance between ECT sensor terminals. Resistance range is 9000-11,000 ohms at 77°F (25°C) to 600-800 ohms at 212°F (100°C). If resistance is as specified, go to next step. If resistance is not as specified, replace ECT sensor.
  3. Check PCM connectors, ECT sensor connector, junction connector, and wiring harness between PCM and ECT sensor. If wiring and connectors are okay, replace PCM.
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