Thanks.koalar.
Immoboliser system disables fuel pump whilst leaving cranking function alone ?
Other systems may be unfluenced by the immobiliser system as well ?
Probably severely restricted info on that subject/system........
So, if cars systems all ok up until the pre cranking state, ie ignition on, what influences the relay to prevent engine starting in gear ?
P and n as was stated many replies ago.....
I wonder if those "sensors" are mounted under the car and open to water, road salt, etc.... ?
May even be "or" logic gate ?