4. Increase Mode
WARNING: This page is about a different car, the 2007 Kia Optima, 2007 Kia Magentis, 2006 Kia Optima, and 2006 Kia Magentis. However, it is still accessible from the selected car via links, so may be relevant.
If HECU determines there's no lock-up in the wheel, HECU cuts voltage to solenoid valve. So voltage is not supplied to each solenoid valve, brake fluid passes through the inlet valve to wheel cylinder, resulting in pressure increase.
SOLENOID VALVE REFERENCE CHART
| Solenoid | State | Valve | Passage | Pump motor |
|---|---|---|---|---|
| Inlet valve (NO) | OFF | Open | Master cylinder <=> Wheel cylinder | ON |
| Outlet valve (NC) | OFF | Close | Wheel cylinder <=> Reservoir |