What is the ECU on a Toyota Prius?
What is the ECU on a Toyota Prius?
An engine control unit (ECU), now called the powertrain control module (PCM), is a type of electronic control unit that controls a series ofactuators on an internal combustion engine to ensure optimal engine performance.
Where is the Prius ECU?
As the owner of a Toyota Prius, You may be concerned with finding the ECU for Your vehicle. It can be found bolted to the firewall, which is situation beneath the brake fluid reservoir inside the engine compartment.
How do you reset the ECU on a Prius?
Procedure:
- Disconnect battery cables, first negative, then positive.
- Cover and protect the battery posts!
- Turn ignition to position II.
- Connect both battery cables (“SHORT”) for at least 10 minutes.
- Wait 10 minutes – then ignition off, key out.
- Reconnect battery positive, then negative.
- OBC says “PPPP”, reset time.
What is hybrid battery ECU?
The principal role of the hybrid battery system is to monitor the condition of the HV battery assembly through the use of the battery ECU. That information is then transmitted to the HV Control ECU. The battery ECU calculates the SOC (State of Charge) of the HV battery based on voltage, current and temperature.
How much does it cost to replace ECU?
How Much Should You Pay for ECU Repairs? ECU repairs can be very expensive. The part alone can cost between $1,000 and $3,000, depending on the make and model of your vehicle. Fortunately, an ECU can be repaired or reprogrammed in many cases—thus preventing the need to actually replace an ECU.
What does a Skid Control ECU do?
The skid control ECU (built into the VSC actuator) detects wheel lock conditions by receiving vehicle speed signals from each speed sensor, and sends control signals to the pump motor and solenoid valve to prevent the wheels from locking by controlling brake fluid pressure to each wheel cylinder.
How do you turn off the red triangle on a Prius?
Although the hybrid battery pack has 204Cells, it only takes 1 failing or bad cell to cause the code and it means the battery is on borrowed time. To reset the red triangle warning light on a toyota prius, you can disconnect the battery and reconnect it.
Can a car ECU be repaired?
ECU repairs can be very expensive. The part alone can cost between $1,000 and $3,000, depending on the make and model of your vehicle. Fortunately, an ECU can be repaired or reprogrammed in many cases—thus preventing the need to actually replace an ECU.
Is traction control the same as electronic stability control?
The difference between traction control and stability control is like the difference between a GED and a master’s degree or PhD in vehicle safety. Stability control is just traction control with more vehicular education (computer programming) and better tools (a more powerful processor and more electronic sensors).
What kind of ECU does the 2004 Prius have?
ECUs, continues to be used. The BEAN in the ’04 Prius is established ECU and gateway ECU. This one runs at a max speed of 10 kbps, but offers two-way communication (more common) over single AV (automotive vinyl) wire using 1-11 Byte variable length packets.
How much does it cost to replace a Toyota Hybrid ECU?
To hell with the Toyota Stealership, the estimated $1700 price quote they gave me for first diagnosing the problem, replacing the part, and price of the part. All this required me is $15 for the Techinfo Account and $30 for the ECU, and a few hours to open up the car and understand how the entire Hybrid system works.
What is the bean protocol in a 2004 Prius?
The BEAN in the ’04 Prius is established ECU and gateway ECU. This one runs at a max speed of 10 kbps, but offers two-way communication (more common) over single AV (automotive vinyl) wire using 1-11 Byte variable length packets. The BEAN protocol is Toyota specific.
What does HV stand for on the ECU?
The Repair Manual calls it the “Hybrid Vehicle Control ECU”, at least on the first page I looked. Thanks, KMO. HV is usually used in engineering to denote High Voltage but in this context, Toyota refers it as Hybrid Vehicle. (also in HV Battery as Hybrid Vehicle Battery.)
