Toms306's China HDi Estate 2012

[Niall]

No one said OBD2 is pointless. It has its places but by no means should it be relied on because most of the time its not right. you can use a multimeter for live readings tom. Ive done it my self for lambda readings. As i said, just scanning for faults will tell you barely any more than a hunch that any half decent mechanic will have. Obviously, if you have got to diagnose electrical control issues....say central locking timings incorrect for example, then yes you would connect it to a specific reader or if you needed to program on a new module, then yes. For example, when my old man was at jag, if a ECU wasnt working in some way...say for instance the stereo wasnt turning on when you turn the car on, they could connect it to OBD and the guys at Jag in coventry could read the coding and change it or confirm a fault but thats not mechanics tom. Thats electrical controls. A proper mechanic is becoming a rare thing these days and thats because people like you go to college and are taught that everything can be diagnosed and fixed with a computer and most of the time it cant and it adds unnecessary time to the job.