SYSTEM DESCRIPTION
1. DESCRIPTION
(a) In the Variable Flow Control (VFC) power steering system, the power steering ECU assembly receives the steering angle signal, steering zero point memory, the steering speed, vehicle speed signal and engine speed signal through the CAN communication system. The power steering ECU assembly also controls the power steering solenoid valve mounted on the vane pump assembly in accordance with whether the vehicle is driving straight or turning in order to supply an appropriate power steering fluid volume.
Furthermore, without regard to whether or not the vehicle is being turned, if the power steering ECU assembly cannot receive the steering angle signal, steering zero point memory, vehicle speed signal or engine speed signal, the power steering warning light in the combination meter illuminates and the vehicle enters fail-safe mode. During fail-safe control, the resistance of the steering wheel increases drastically to inform the driver that the vehicle is in fail-safe mode.
2. FUNCTION OF MAIN COMPONENTS
Item |
Function |
---|---|
Power steering warning light |
Illuminates to inform the driver that a malfunction in the power steering system has occurred. |
Power steering solenoid valve |
Controls the power steering fluid volume by the control signals from the power steering ECU assembly. |
Steering angle sensor |
Transmits the steering angle signal and steering zero point memory to the power steering ECU assembly via CAN communication. |
power steering ECU assembly |
Processes the signals sent from master cylinder solenoid (skid control ECU), the steering angle sensor and ECM, and controls to the power steering solenoid valve. |
Master cylinder solenoid (Skid control ECU) |
Transmits the vehicle speed signal to the power steering ECU assembly via CAN communication. |
ECM |
Transmits the engine speed signal to the power steering ECU assembly via CAN communication. |
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
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Installation
INSTALLATION
CAUTION / NOTICE / HINT
NOTICE:
Always use a new grommet and valve core when installing the tire pressure
warning valve and transmitter.
Check that the washer and nut are not damaged, and replace them if necessary.
Make s ...