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DTC P0117 - ENGINE COOLANT TEMPERATURE SENSOR LOW VOLTAGE INPUT Isuzu Oasis I

Testing & Diagnostics ~174 words
  1. Turn ignition on. Check Engine Coolant Temperature (ECT) sensor using OBD-II scan tool. If 302°F (150°C) or more, or zero volts is indicated, go to next step. If 302°F (150°C) or more, or zero volts is not indicated, problem is intermittent. System is okay at this time. Check for poor connections or loose wires at ECT sensor and PCM connectors. See WIRING DIAGRAMS article.
  2. Disconnect ECT sensor 2-pin connector. Check ECT sensor using OBD-II scan tool. If 302°F (150°C) or more, or zero volts is indicated, go to next step. If 302°F (150°C) or more, or zero volts is not indicated, replace ECT sensor. 3) Turn ignition off. Disconnect PCM 31-pin connector "C". Check for continuity between ground and ECT 2-pin connector terminal No. 1 (Red/White wire). If continuity exists, repair short in Red/White wire between ECT sensor and PCM. See WIRING DIAGRAMS article. If continuity does not exist, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.

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