Need a help or advice, i have a flashing odometer, and it's probably because of instrument cluster and electrical windows unit were replaced.
So because it's cheaper to get the diagnostic tool than paying in the service to reset (do proxi alignment) to fix the errors i bought one of those cheap elm327 diagnostic tools.
The exact name is ELM327 OBDII v1.5, with cable, its exact one like from the image below.
But i have a problem, i can't connect to the car at all.
I always get an error "Could not connect to the ECU"
When i try to connect to the ECU, i tried with the Multiecuscan and Scan Master tool and both fail at connection.
When i try to connect for example in Scan master:
I get a connection with laptop and interface on COM4 port
I get a response from the car that it is somehow noticed that diagnostic tool is connected to the car,
In the response i get a car battery check, if it's turned off 12.1v or engine running 14.1v (of course when car is turned of ignition key is turned on)
Than i get a response that protocol is KWP Fast, or KWP 2000
And something that braud rate is 94 thousands or something
And last step when i get the error is error "Could not connect to the ECU"
I tried diagnostic tool on two different Alfa's mine is Petrol, and friend have Diesel same year model (2001) and it's the same on both Alfa's
When i tried diagnostic on Seat Ibiza, and Fiat Punto, or Renault Laguna, the diagnostic tool works with no problem.
Can someone give me any suggestion what to do? This diagnostic tool is supposed to do everything with Alfa Romeo cars, but mine can't even connect.
In other hand, can bluetooth or wireless versions do proxi alignment and other things like mileage change (because my dashboard is changed it have wrong mileage) or maybe some kkl vag com is able to do these things?