I sent a E-Mail to Haynes as below.
I have a focus C Max 53 with the 1800 Duratec HE engine with electric throttle could you tell me if the engine in the Manual for the ford focus petrol (05-09) is the same setup if not can you direct me in the right direction which might help.
Thank you for your email
Although the engine in the Focus hatchback is basically the same there are some unspecified differences when installed in the C-MAX. We are just about to start work on a manual for the C-MAX and we will have a better idea once the project has been started and a vehicle or two has been purchased. Until then we are unable to help with your query and I can only suggest you contact a friendly Ford dealer for advice.
Any advice would welcome The Vicar.