360 360 ECU Repair

It could be that, but it could also be five other things outside the ECU that makes it non-communicative with the other ECU.

 

I did not think they could even be repaired?

 

Repair is a big word. All they did was to check and replace some of the old capacitors which are well known to leak and go bad. If they find any other burnt power transistors or voltage regulators they change those. The cost is a few hundred dollars and it may not be worth it at all. If you ascertain that the ECU is bad, replacement is what is recommended. You also need someone to program the ECUs because they come unprogrammed. Trev360 and his regional assistants offer this service.

Evan, have the shop check for integrity of the inter-communication CAN bus between the 2 ECUs. Check to make sure all power and ground pins are fed to the ECU. The clicking noise on the left throttle body means something. Perhaps that TB is also bad.

 

easiest way to tell if its the ecu, try swapping them. If the TB where the possible bad ecu is plugged in starts doing the same thing that means its the ecu, if not, it is your TB.

 

Or if the throttle body is causing blown components in the ECU, you will end up with two blown ECUs.

https://www.ferrarichat.com/forum/posts/147623339/

 

The clicking throttle body is symptomatic of the throttle body(s) drawing too much power from the ECU (I think max is 6A) and melting the H-bridge in the circuit.

This kind of damage may be repairable by resoldering the H-bridge connections.

The TB motor is likely drawing too much power because it has shorts.

I recommend rebuilding both TBs using donor parts from a Porsche Cayenne (and many other models) TB. About $300 in parts. (Bosch part 0 280 750 474)