2009-2011 models use one OCV valve for the intake camshaft, while 2012 and later models use two. The sensor is located on the driver's side cylinder head for 2006-2011 models, and on the timing chain side for 2012 and later models. To remove, disconnect the negative battery terminal and the CVVT oil control valve connector, then remove the mounting bolt and valve. Installation is the reverse of removal, with the O-ring coated in clean engine oil.