Adaptive Damper System Description (Si) (2017 2018 2019 2020 2021)

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.

Components

The adaptive damper system consists of the following primary components:

Adaptive damper control unit
Adaptive damper units
System warning

For locations of each component on vehicle, refer to Component Location Index , and for functions of system warning, refer to How to Troubleshoot the Adaptive Damper System .

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.

In the integrated drive-mode system is in SPORT mode, the adaptive damper adjusts the damping force higher than NORMAL mode.

Adaptive Damper Characteristic Image

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

Integrated Drive-Mode System

The adaptive damper system has two control modes which correspond to the integrated drive-mode signal sent from the PCM via F-CAN. When the integrated drive-mode system in NORMAL mode, the adaptive damper system provides a float ride. When the integrated drive-mode system in SPORT mode, the adaptive damper system provides 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 drive-mode signal)	A fixed current (0 A) is set for all dampers.	OFF
D	CAN communication failure (integrated drive-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.