French electrics. What a prick.
So yesterday night had to get the RAC out as the 172 wouldn't start. Long story short turns out the injector locking relay in the engine bay wasn't switching. Swapped relays around and still no good so ruled out a dodgy relay. Bridged the circuit in the end and its all good, starts runs everything.
Got home today and consulted the wiring diagrams and it looks like the ecu controls the switching earth on the relay. Feed comes of the feed that was bridged so cant be that.
So either leaves either the ecu has apparently fucked up in a very specific way or there must be a break in a wire somewhere. Problem is I drove it Friday night, parked up and Saturday it just wouldn't start. So something has spontaneously fucked up, which seems unlikely to be a wire break.
So thoughts? Anyone every had a very specific ecu fault? or is a wire tracing game?
Cheers
So yesterday night had to get the RAC out as the 172 wouldn't start. Long story short turns out the injector locking relay in the engine bay wasn't switching. Swapped relays around and still no good so ruled out a dodgy relay. Bridged the circuit in the end and its all good, starts runs everything.
Got home today and consulted the wiring diagrams and it looks like the ecu controls the switching earth on the relay. Feed comes of the feed that was bridged so cant be that.
So either leaves either the ecu has apparently fucked up in a very specific way or there must be a break in a wire somewhere. Problem is I drove it Friday night, parked up and Saturday it just wouldn't start. So something has spontaneously fucked up, which seems unlikely to be a wire break.
So thoughts? Anyone every had a very specific ecu fault? or is a wire tracing game?
Cheers