Can you damage an ECU by jump starting?
“Jump-starting your car incorrectly is one of the most common ways to damage an ECU.” He advised: “Be very aware of the polarity of the jumper leads when jump-starting a vehicle with a flat battery – many ECU’s have been damaged by short-circuiting the jumper leads.
What happens when you connect battery terminals wrong?
When a car battery is connected backward, a fuse designed to protect vehicle electronics should blow. If your vehicle doesn’t have a fuse (almost all cars do) designed for this purpose, you will send electrical current backward through systems in your car, including ECU, transmission control unit, and more.
What does an ECU cost?
You should expect to pay between $150 and $300 at a local repair shop or service center just to have the ECU inspected and tested. In many cases, the faulty ECU can be repaired or reprogrammed, and this type of repair will usually run between $300 to $750, depending on the make and model of your vehicle.
How to change the ECU on a 2005 Toyota Corolla?
Interested in the full wiring diagram of the ECU connections of the 2005-2007 Toyota Corolla? To sync your replacement ECM with your car’s immobilizer system you will need to jump two connections in the OBD diagnostic port terminal for 30 minutes with the car key in the “ON” position. That is, all the way forward, right before starting the engine.
Why does my Toyota Corolla not start properly?
Corrosion on the contacts of your car battery leads to loss of contact and reduced current flow, which means that your engine can no longer start properly. To know if your Corolla’s starting problems are from dirty battery contacts, you need to investigate them.
What to do if your Toyota won’t start?
Battery – If the connections on your battery become corroded, there is no longer a connection to the rest of the car. This can keep you from starting. Clean the posts and try to start the car. Additionally, the battery may be dead. Take a battery tester and test the cranking amps to see if they are weak.
Can a Toyota Corolla immobilizer cut the starter?
The rule is; an immobilizer problem will cut injection and/or ignition but will let the starter motor crank. A problem with the anti-theft security system (alarm) will cut the starter too.