For 1990-2009 cars

1. Remove the left secondary camshaft drive chain tensioner.

Notice: Refer to Torque Reaction Against Timing Drive Chain Notice in the Preface section.

2. Use an open-end wrench on the hex cast into the left intake camshaft, in order to prevent the camshaft from rotating, when loosening the camshaft position actuator oil control valve on the left intake camshaft.
3. Use an open-end wrench on the hex cast into the left exhaust camshaft, in order to prevent the camshaft from rotating, when loosening the camshaft position oil actuator control valve on the left exhaust camshaft.
4. Remove the left camshaft position actuator oil control valves from the left side camshafts.
5. Slide the left camshaft position actuators off the left side camshafts.
6. Remove the left secondary camshaft drive chain from the inner camshaft intermediate drive shaft sprocket teeth.
7. Remove the left secondary camshaft drive chain from the engine.
8. Remove the left secondary camshaft drive chain shoe bolt.
9. Remove the left secondary camshaft drive chain shoe.
10. Remove the left secondary camshaft drive chain guide bolt.
11. Remove the left secondary camshaft drive chain guide.