Adaptive Damper System Description

Overview

The adaptive damper system provides optimal damping force for all driving conditions by adjusting the damping force of each damper independently, improving the driving performance.The system is controlled by the adaptive damper control unit.With the adaptive damper system, roll-, pitch-, and yaw- motion of the vehicle can be controlled resulting in different driving characteristics.The adaptive damper control unit controls each damper solenoid with vehicle motion signals from other control units.

Courtesy of HONDA, U.S.A., INC.

Control

The adaptive damper adjusts the damping force as in the following graph, depending on the change of the amount of electric current output from the adaptive damper control unit.

Adaptive Damper Characteristic Image

Courtesy of HONDA, U.S.A., INC.

Sport Mode

The adaptive damper system has two control modes which correspond to the sport mode signal sent from the PCM via F-CAN. When the vehicle in the NORMAL mode, the adaptive damper system provides a softer ride. When the vehicle in the SPORT mode, the adaptive damper system improves a flat ride.

Fail Safe Mode

Depending on the severity of the error, the adaptive damper system will switch to one of four possible fail safe modes. In case of each fail safe mode a DTC is stored in the adaptive damper control unit.

Fail Safe Mode	Failure State	Action	Failure Indication
A	Power source (IG) failure Control unit failure Damper unit failure	The current for all dampers is switched off.	ON
B	SVCC voltage upper limit failure	A fixed current (0 A) is set for all dampers.	ON
C	Power source (+B) failure CAN communication failure (except integrated sport mode signal)	A fixed current (0 A) is set for all dampers.	OFF
D	CAN communication failure (integrated sport mode signal)	The control mode is fixed in that mode when the failure occurred.	OFF

NOTE: The failure state is an outline and some examples.