What does an ECU control?
An electronic control unit (ECU) is a small device in a vehicle’s body that is responsible for controlling a specific function. ECUs also control passive safety features, such as airbags, and even basic active safety features, such as automatic emergency braking.
What is the work of ECU in a car?
Quite simply put ECU is a device that controls all the electronic features in a car. This may range from fuel injection to maintaining perfect cabin temperature to controlling braking and suspension. Some vehicles have multiple ECU controlling different features while some have a single one controlling everything.
What are the symptoms of a bad engine control unit?
Here are the most common symptoms of a bad ECU:
- Check Engine Light stays on after resetting.
- Car was jump started on reverse polarity.
- Engine turning off for no reason.
- Water Damage or Fire Damage on the ECU.
- Apparent loss of spark.
- Apparent loss of injection pulse or fuel pump.
- Intermittent starting problems.
- Overheating ECU.
What are the signs of a bad ECU?
Here are the most common symptoms of a bad ECU: Check Engine Light stays on after resetting. Car was jump started on reverse polarity. Engine turning off for no reason. Water Damage or Fire Damage on the ECU. Apparent loss of spark.
What is an ECU and what does it do?
The electronic control unit (ECU) used in today’s cars and trucks is used to control the engine and other components’ functions . An ECU is a computer with internal pre-programmed and programmable computer chips that is not much different from a home computer or laptop.
What is the function of the ECU?
The main function of ECU or Engine Control Unit is the controlling of series of function of actuators on an internal combustion engine and ensuring the excellent engine performance.
How much does it cost to replace an ECU?
This will all depend on your situation. A remanufactured ECM can cost you anywhere from $200-$400. If you choose to go this route, make sure the part comes with a factory warranty or is 100% certified. If the ECM just has to be reprogrammed and/or analyzed, it can cost $150 to $300.