( TL19E30A14680800000CAAT10 )

VTEC System
Intake valve side

- The VTEC system changes the intake cam profile to correspond to the engine speed. It maximizes torque at low engine speed and output at high engine speed.
- The low lift cam is used at low engine speeds, and the high lift cam is used at high engine speed.
- Rocker arm oil control solenoid switches the intake side of the VTEC system on and off; the solenoid is controlled by the ECM/PCM.

ENGINE SPEED | ROCKER ARM OIL CONTROL SOLENOID | INTAKE VALVE LIFT
--- | --- | ---
LOW | OFF | LOW
HIGH | ON | HIGH