This morning changed setting to 12v start the car drove off and stopped after abt 2km parked the car at 10am. Came back to start car 1.30pm, cudnt start after several tries and half hour later. Got the car towed to workshop to test electricals:
1. Change back to 5v, still cannot start
2. Took out cam angle sensor, spin it and check with ohm meter and oscilloscope
3. Fuel injectors signals ok
4. One coil/spark out of head, check no sparking
5. Ignition input signals ok
6. Ignition output signals not detected
7. Swap to another ultimate board - still the same no sparking
8. Disconnect ultimate and using stock ecu - still no sparking
9. Open up stock ecu - motherboard looks ok with no smell of burning
Suspect stock ecu affected so meantime sourcing for another stock ecu to test or cud it be the cam angle sensor but the injectors signals functioning. My tuner said the ultimate installed is the latest version using the 'E' board which allegedly does not require any ignition adapter. The adapter is a mini-board attached just above jumpers J7 & J8 and this to get rid of the engine check light. Is there another additional adapter making a total of 2 adapters required as I saw on the Nengun website Adapter 1 & 2 are needed for ER34 engines.
So is my stock ecu or its ignition circuit fried? What's the mechanics of setting to 12v when the coils are rated 5v and did this setting send back any rogue currents to affect stock ecu? Is there any set parameters made up by the makers Trust?
Appreciate any help and advice