Adaptive Damper System Symptom Troubleshooting Index

Symptom	Diagnostic procedure	Also check for
HDS does not communicate with the adaptive damper control unit or the vehicle	Troubleshoot the DLC circuit - Refer to: DLC Circuit Troubleshooting (2019 - 2021) or DLC Circuit Troubleshooting (2022 - 2023) .
Adaptive damper system warning does not go off, and no DTCs are stored	NOTE: If any of the CAN communication failure DTC is indicated in other system, troubleshooting the DTC first. Check for open wire or shorted wire in the F-CAN circuit; Between the gauge control module and the CAN gateway (F-CAN D_H, F-CAN D_L) Between the adaptive damper control unit and the CAN gateway (F-CAN C_H, F-CAN C_L) Check the adaptive damper control unit power circuit (+B_ADS, IG1_VSA(VST)) Check the adaptive damper control unit ground circuit (GND) Do the gauge control module self-diagnostic function .	Refer to the followings about the indicator operating condition; How to troubleshoot the adaptive damper system Refer to the followings about the circuit troubleshooting; Gauge control module connector for inputs and outputs Adaptive damper control unit connector for inputs and outputs Adaptive damper control unit circuit diagram - Refer to: Adaptive Damper System Circuit Diagram (2019 - 2021) or Adaptive Damper System Circuit Diagram (2022 - 2023) Fuse to components index Ground to components index

Symptom

Diagnostic procedure

Also check for

HDS does not communicate with the adaptive damper control unit or the vehicle

Adaptive damper system warning does not go off, and no DTCs are stored

NOTE: If any of the CAN communication failure DTC is indicated in other system, troubleshooting the DTC first.

Check for open wire or shorted wire in the F-CAN circuit;
- Between the gauge control module and the CAN gateway (F-CAN D_H, F-CAN D_L)
- Between the adaptive damper control unit and the CAN gateway (F-CAN C_H, F-CAN C_L)
Check the adaptive damper control unit power circuit (+B_ADS, IG1_VSA(VST))
Check the adaptive damper control unit ground circuit (GND)
Do the gauge control module self-diagnostic function .

Refer to the followings about the indicator operating condition;

Refer to the followings about the circuit troubleshooting;