What should the voltage be on the coolant temperature sensor?
Engine Coolant Temperature (ECT) Sensor Voltage – Testing. The reference voltage to the sensor from the (PCM) should be about 5-volts. The return voltage signal should be around 3 to 4 volts, when the engine is cold. This should gradually drop to 2 volts or less as the engine reaches, normal operating temperature.
What is the p0118 coolant temperature sensor circuit?
P0118 Engine Coolant Temperature Sensor Circuit Hi Voltage: diagnostic checks for a resistance corresponding to a very low engine coolant temperature. Engine control module (ECM) or PCM (powertrain control module) supplies 5 V to the ECT sensor signal circuit and a ground for the low reference circuit.
Why is the coolant temp on my ECT sensor low?
This DTC tells you that the PCM is seeing a coolant temperature of -46° F (-50° C). In technical terms, the PCM is seeing a very high voltage drop across the ECT sensor’s circuit, which it translates into an extremely low temperature. Coolant temp sensor’s wires have an ‘open-circuit’ problem (usually due to a cut wire).
What are the diagnostic codes for coolant temperature?
You may see one of the following diagnostic trouble codes: P0115….Engine Coolant Temperature Circuit P0116….Engine Coolant Temperature Circuit Range/Performance P0117….Engine Coolant Temperature Circuit Low Input P0118….Engine Coolant Temperature Circuit High Input P0119….Engine Coolant Temperature Circuit Intermittent
Engine Coolant Temperature (ECT) Sensor Voltage – Testing. The reference voltage to the sensor from the (PCM) should be about 5-volts. The return voltage signal should be around 3 to 4 volts, when the engine is cold. This should gradually drop to 2 volts or less as the engine reaches, normal operating temperature.
Which is p0118 engine coolant temperature sensor high input?
P0340 tps high voltage P0118 engine coolant sensor high voltage P0108 map high voltage P0351 coil primary circuit (no idea what that means..) P0113 IAT high volt… 2001 Saturn SC 1.9 4cyl. 120,000mi. P0118 CTS, P0507 ERGvalve, P0301 misfire #1.
This DTC tells you that the PCM is seeing a coolant temperature of -46° F (-50° C). In technical terms, the PCM is seeing a very high voltage drop across the ECT sensor’s circuit, which it translates into an extremely low temperature. Coolant temp sensor’s wires have an ‘open-circuit’ problem (usually due to a cut wire).
What should the coolant temp be in a car?
Some vehicles are equipped with a thermostat with an opening temperature of 180°F (82°C), whereas other vehicles use a thermostat that is 195°F (90°C) or higher. Before replacing the ECT sensor, be sure that the engine is operating at the temperature specified by the manufacturer.
What are the symptoms of a bad coolant temperature switch?
1. Poor fuel economy 2. Black smoke from engine 3. Overheating engine 4. Check Engine Light comes on The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engine’s coolant.
What does a low temperature sensor tell the PCM?
A manifold temperature sensor that sends out a low temperature reading tells the PCM that the incoming air is very dense. The PCM in response increases the amount of fuel to the engine so that the proper air / fuel mixture is maintained. The PCM unknowingly is creating a rich condition which can cause your engine to run rough.
Can you lower the temperature of 2 lean amine?
Many times it is impractical or undesirable to lower the absorber temperatures by cooling the sour gas feed, so one option is to lower the temperature of the 2 lean amine as much as possible. However, this could require violating the 5C (10F) approach rule of thumb.