What is the resistance of coolant temperature sensor?
In cold engine and an ambient temperature of 20 ºC the sensor resistance is between 2000Ω and 3000Ω. After the engine start, coolant temperature begins to rise. ECT gradually heats and its resistance reduces proportionately. At 90 ºC its resistance is in the range of 200Ω to 300Ω.
How do you check a coolant sensor with a multimeter?
To do this, use your multimeter to measure the coolant temperature sensor’s resistance value, and then follow that up by connecting your multimeter’s leads on one of the sensors of the electrical connector terminal and consequently the other lead on a different terminal on the electrical connector’s sensor.
Which sensor continuously reports coolant temperature to the ECU?
A coolant temperature sensor (CTS) (also known as an ECT sensor or ECTS (engine coolant temperature sensor) is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.
Where are the sensors on a Toyota Camry?
Figure 1. Four cylinder Camry engine with sensor circled. Identify the catalytic converter, and then look for the two sensors (they look like thick black wires) that are connected to it. There is one (sensor 1) in front of the catalytic converter and a second (sensor 2) located behind and beneath the catalytic converter.
What should my coolant temperature sensor reading be?
You should have a reading of approximately 2000 ohms. Check the warm sensor in your engine. You should see a much lower reading on the ohm meter. If not, then it is not working correctly. Replacing the coolant temperature sensor is an easy process that anyone can do at home with some basic mechanic’s tools.
Can a faulty O2 sensor be replaced on a Toyota Camry?
Replacing a faulty O2 sensor is not a difficult project, even for a novice DIY’er, as long as you take the appropriate precautions to prevent accidentally burning yourself. This article applies to the Toyota Camry (1997-2011).
What does it mean when coolant sensor does not change?
This will indicate that your coolant sensor is responding to engine temperature. Also, make sure the engine reached operating temperature at about 200F (93C) before dropping. If engine temperature didn’t change much throughout your readings, the thermostat is stuck open and you need to replace it.