Avalon, Camry (Jan. 2003 & Later Production), Highlander & Sienna
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- Remove "V" bank cover on top of engine for access to VVT camshaft timing oil control valves. VVT camshaft timing oil control valves are located on end of cylinder head at flywheel end of engine. See Fig 1.
- To check VVT camshaft timing oil control valve resistance, disconnect electrical connector at appropriate VVT camshaft timing oil control valve. Using ohmmeter, check resistance between electrical terminals on VVT camshaft timing oil control valve. Resistance should be 6.9-7.9 ohms at 68°F (20°C). If resistance is within specification, go to next step. If resistance is not within specification, replace VVT camshaft timing oil control valve.
- To check VVT camshaft timing oil control valve operation, remove retaining bolt and appropriate VVT camshaft timing oil control valve with "O" ring from cylinder head. Note movement of the valve inside VVT camshaft timing oil control valve while applying and disconnecting battery voltage and ground to terminals No. 1 and 2 on VVT camshaft timing oil control valve. Valve should move outward toward end of assembly opposite electrical connector with voltage applied and should move inward toward electrical connector end of assembly with voltage not applied. See Fig 2. Replace VVT camshaft timing oil control valve if operation is not as specified. Reinstall VVT camshaft timing oil control valve using NEW "O" ring. On Avalon and Sienna, tighten retaining bolt to 66 INCH lbs. (7.5 N.m). On Camry and Highlander, tighten retaining bolt to 71 INCH lbs. (8.0 N.m).