Non starter suspect ecu ? some advice on anyone with same problem before ? only getting 2.5 volt supply to crank sensor and poor earth ,tested wiring and found all good carried out scope test on crank sensor at ecu and not getting correct trace/tested cam sensor and found to be ok ,also using launch scanner and noticed that there is a facility to copy and write ecu code on the configurations page,has any one used this before and was it successful ,would it copy and write to a second hand ecu ?
any advice would be appreciated

Mark

ps also no rpm on rev counter or scanner under cranking on starter ?