Background...

Battery light came on while driving and battery gradually discharged untill engine misfired and stopped.

After recharge (and with the expectation of diagnosing an alternator fault) engine would fire up on cranking but die as soon as key released.

If Key held in crank position engine will run and even rev but die as soon as key released.

Autodata is of only limited help here, I was hoping at least for a wiring diagram that might indicate why the engine would run in crank position but not run position but to no avail.

What did seem clear however is that autodata seems to suggest that almost everything that goes wrong with one of these ends up requiring a reflash!

Is it possible that the battery running flat while running has damaged the ECM or scrambled its software?

Before I pass this on to the Yota dealer I was just wondering if anybody had any thoughts on the matter?