-------------------------------------------------------------------------------------Do not do this when the engine is hot---------------------------------------------------------------------------------
Instructions on how I replaced the ECM/ECU temp sensor, I created this from memory using pictures I took at the time so I may have missed something, feel free to let me know if I have and I'll amend it.
Follow these instructions at your own risk, engine must be cold, I undid the coolant cap to release any pressure before I started and refitted correctly (there wasn't any pressure in mine).