Thank you both, I have googled the troubleshooting, its a CTM. Which is no longer made.

The code I have established means 5 flashes - disengage lever fault. 

I have checked all wiring, cleaned all terminals and connections, lubricated the lever itself and found I personally cant get into the motor without taking all kinds of bits off. So as im not a qualified mechanic I can't do any more, so its time unfortunately to spend some money, just to sell it on grrrrrrr.