Q&A

Most Scions have a black plastic shield over the top of the engine you remove, then disconnect the electrical connection at each of the ignition coils that sit above the spark plugs,the coils are usually secure to the valve cover with a 10mm head bolt, you need a 3/8 drive long extension and ratchet and a 5/8 spark plug socket to remove the plugs.
There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate http://bit.ly/AllData_Repair_Manuals_Online