The first step to take before commencing work would be to immobilize the engine and vehicle by removing the cable on the negative terminal of the battery, and it is important to have the right activation code when dealing with any anti-theft stereo system. Put the parking brake on and chock the wheels at the back to ensure it does not move. The components are located under drivebelt(s) and water pump pulley. Start the engine on No. 1 cylinder by turning the engine to TDC and then remove the timing belt upper and lower covers. Loose the retaining nut in the tensioner pulley hub and turn it counterclockwise to take the tension off the timing belt and then take the nut and washer out. Loosen the tensioner off its mounting stud, clean it with no solvents, and look at it. Install the tensioner pulley, washer and retaining nut without tightening, tension the timing belt and install the covers before reconnecting the battery. In the case of the camshaft timing belt sprocker, the timing belt covers are removed, the engine is set to TDC, and the tensioner center nut is loosened, and then the timing belt is slipped off the sprocker. With the retaining bolt loosened, a homemade tool may be needed but hold the sprocket stationary then slide it off and inspect the oil seal to eliminate any leakes. Clean the mating surfaces, fit the Woodruff key (where needed), locate the sprocket and key, check-TD, tension the timing belt and the covers. In the case of the crankshaft timing belt sprocket, the steps to be followed are as follows; that is, to remove the covers, to adjust TDC, and to release tension on the belt. Have sprocket stationary, loosen retaining bolt and then remove sprocket and inspect the seal. Clean the surfaces, install the sprocket, tighten the bolt, check TDC, tension the timing belt and install the covers. In the case of the intermediate shaft sprocket, the covers are to be removed, TDC to be set, tension relieved and the belt removed by sliding it off. Loosen the retaining bolt with a makeshift tool in holding the sprocket, then unscrew the retaining bolt and remove the sprocket checking the oil seal. Cleaning the surfaces, fit the Woodruff key, adjust the sprocket, verify TDC, screw the bolt, tension the timing belt and put the covers on. Lastly, fit and pull the drivebelt(s).