MK4 Astra ECU
Just wondering, how clever is this ecu in the MK4? does it really register most faults with a car as VX seems to swear by if tech2 does not pick up any problems, there is nothing wrong with a car.
Can anyone tell me more about the ecu in the MK4 please?
The ecu in the MK4 is very good
ive been playing with different software to talk to it and what it stores im impressed with
but thats not to say its always right
Tech2 is a tool to help you diagnose a fault and should be used as such
saying no trouble codes means no faults is a bit of a cop out but thats my view
for most things the ecu will tell you whats up but if not, its down to good old fault finding
I had fault with the auto saying faulty shift solanoid chaged that still the same fault code comming up turned out to be a wiring fault so it can be wrong
ITs like a computer - in fact it is very nearly one in its own right, however like a computer it is only as good as it is told, or knows about !
If it has a fault in wiring and it cannot communicate to the device it needs, then it will only know about the device not working. Its a good ECU, no doubt, but your being fobbed off Al, its as simple as that i'm afraid !