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Symptom: P0116-ENGINE COOLANT TEMPERATURE PERFORMANCE When Monitored and Set Condition: P0116-ENGINE COOLANT TEMPERATURE PERFORMANCE When Monitored: Engine off time is greater than 480 minutes. Ambient temperature is greater than 4°C (39°F). Set Condition: After a calibrated amount of cool down time, the PCM compares the ECT Sensor, IAT Sensor and the Ambient Air Temperature Sensor values. If the ECT Sensor POSSIBLE CAUSES GOOD TRIP EQUAL TO ZERO (K2) ECT SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE ECT SENSOR VOLTAGE BELOW 1.0 VOLT (K2) ECT SIGNAL CIRCUIT OPEN (K4) SENSOR GROUND CIRCUIT OPEN (K2) ECT SIGNAL CIRCUIT SHORTED TO GROUND (K2) ECT SIGNAL SHORTED TO (K4) SENSOR GROUND PCM HIGH PCM LOW TEST ACTION APPLICABILITY 1 NOTE: Due to the fact that the PCM compares the IAT, AAT and ECT sensor t, read DTCs and record the related Freeze Frame data. Is the Good Trip Counter displayed and equal to zero? All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 263 DRIVEABILITY - NGC |