Hopefully i can help...I see your question is still live..do you still require any help?
were is the plug in point for the diagnostics on the rx4 scenic. x reg
Hi.there..sorry for delay..
Ive inc a diagram below that should help you lcate the DLC socket..Also i see you say the car just suddenly cut out on the motorway..provided you have checked fuel is getting upto the engine and theres a spark..i would certainly double check the timing belt hasnt actually snapped or stripped teeth..one way to check that is to open the oil cap and observe the camshaft have somebody spin the engine over quickly in short bursts and see if the camshaft moves if not - if it doesnt - then you have broken timing belt..