For Intellistart to work on an auto, it needs to see the bonnet closed, and an earth, (return), on the brake light wire before it will even crank.
If it's cranking, it needs the crank time adjusted properly, and an RPM input programmed so that it 'knows' when the engine is running at idle speed.
Is it flashing the indicators? - If so, how many times? If it's flashing three times and not even attempting to crank, Its 'seeing' something wrong. Either a small amount of voltage from the brake lights, meaning you may have a high resistance earth connection at the rear lights, or it could be seeing an earth on the bonnet switch line, which could be corrosion on the bonnet pin switch itself causing just enough continuity to earth to mess up the intellistart. You can try disconnecting the bonnet switch to see if that makes any difference...