DTC P0117: ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOW VOLTAGE INPUT

DTC P0117: ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOW VOLTAGE INPUT Honda Civic GA

Turn ignition on. Check ECT using 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 appropriate wiring diagram in WIRING DIAGRAMS article.
Disconnect ECT sensor 2-pin connector. Check ECT using scan tool. If 302°F (150°C) or more, or zero volts is indicated, go to next step (D16Y5 engine with M/T), or go to step 4 (except D16Y5 engine with M/T). If 302°F (150°C) or more, or zero volts is not indicated, replace ECT sensor.
On D16Y5 engine with M/T, turn ignition off. Disconnect PCM 16-pin connector "D". Check for continuity between ground and ECT harness connector terminal No. 1 (Red/White wire). (Схема №4) If continuity exists, check for short in Red/White wire between ECT sensor and PCM 16-pin connector "D" terminal No. 2. See appropriate wiring diagram in WIRING DIAGRAMS article. If continuity does not exist, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.
On all except D16Y5 engine with M/T, turn ignition off. Disconnect PCM 31-pin connector "C". Check for continuity between ground and ECT harness connector terminal No. 1 (Red/White wire). (Схема №3) If continuity exists, check for short in Red/White wire between ECT sensor and PCM 31-pin connector "C" terminal No. 26. See appropriate wiring diagram in WIRING DIAGRAMS article. If continuity does not exist, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.

DTC P0117: ENGINE COOLANT TEMPERATURE (ECT) SENSOR LOW VOLTAGE INPUT Honda Civic GA

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