What should be the temperature in thermal screening?
Preparing the Area where You will Use a Thermal Imaging System. Room temperature should be 68-76 °F (20-24 °C) and relative humidity 10-50 percent.
What should the temperature be on the ECT sensor?
Usually around 250° F, even tho’ the engine is cold. This condition leads the PCM to register a P0118 DTC. It will receive input from the ECT sensor showing an extremely low temperature.
What does low voltage drop mean on ECT sensor?
This code indicates that the PCM is seeing a low voltage drop across the ECT sensor, which it’s translating as an extremely hot coolant condition. When the PCM senses this low voltage input, it will translate this voltage input to a 250° F temperature. Coolant temp sensor’s wires are shorted to Ground.
What should the ECT reading be when the engine is hot?
In general terms if the ECT reading is cold the reading could be less than 0.5 volts (on the ground signal) and when the engine is hot the reading could be around 4 volts. For specific readings for your application, see a vehicle-specific repair manual. Note that the ECT sensor is not the same thing as a coolant temperature SENDER.
Usually around 250° F, even tho’ the engine is cold. This condition leads the PCM to register a P0118 DTC. It will receive input from the ECT sensor showing an extremely low temperature.
This code indicates that the PCM is seeing a low voltage drop across the ECT sensor, which it’s translating as an extremely hot coolant condition. When the PCM senses this low voltage input, it will translate this voltage input to a 250° F temperature. Coolant temp sensor’s wires are shorted to Ground.
In general terms if the ECT reading is cold the reading could be less than 0.5 volts (on the ground signal) and when the engine is hot the reading could be around 4 volts. For specific readings for your application, see a vehicle-specific repair manual. Note that the ECT sensor is not the same thing as a coolant temperature SENDER.
What’s the difference between CHT and ECT sensor?
Here are some specific differences between both of them: The engine coolant temp (ECT) sensor measures the temperature of the coolant, the cylinder head temperature (CHT) sensor measures the temperature of the metal itself (of the cylinder head) and no coolant is involved.