CONSTRUCTION
The cam timing oil control valve assembly controls its spool valve using duty-cycle control from the ECM. This allows hydraulic pressure to be applied to the advanced or retarded side of the camshaft timing exhaust gear assembly.
| *1 | Sleeve | *2 | Spring |
| *3 | Spool Valve | - | - |
| *a | to Camshaft Timing Exhaust Gear Assembly (VVT-i Controller) (Advance Side) | *b | to Camshaft Timing Exhaust Gear Assembly (VVT-i Controller) (Retard Side) |
| *c | Drain | *d | Oil Pressure |