Does 2008 toyota sienna have timing belt chain?

The 2008 Toyota Sienna has a timing belt on both the 4Cylinder and v6 engines. The 2008 Toyota Sienna engine uses a timing chain however. A timing chain synC-HRonizes the rotation of the crankshaft and camshaft(s) ensuring proper timing and allows the engine's valves to open and close during each cylinder's firing. The chain is located inside of the engine and needs to be lubricated by the oil in the engine, making oil maintenance important as well.Basically the timing belt is a rubber belt that controls camshaft and crankshaft rotation as well as the opening and closing of engine valves. The valves push the pistons down when the fuel is ignited. Without the timing belt, the valves don't open and close to allow the fuel to ignite and the car doesn't run.