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: Network Communications Symptom Troubleshooting - F-CAN BUS-OFF (CAN BUS without Connection to CAN Gateway) (3.0L Engine) or Network Communications Symptom Troubleshooting - HDS does not communicate with the vehicle or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS with Connection to CAN Gateway) or Network Communications Symptom Troubleshooting - F-CAN BUS-OFF (CAN BUS without Connection to CAN Gateway) or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS without Connection to CAN Gateway) or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS with Connection to CAN Gateway) (3.0L Engine) or Network Communications Symptom Troubleshooting - B-CAN Lost Communication .
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 (IF-CAN_H, IF-CAN_L) - Between the adaptive damper control unit and the CAN gateway (VF-CAN B_H, VF-CAN B_L) Check the adaptive damper control unit power circuit (+B_ADS, IG1_OPTION) 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 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

Troubleshoot the DLC circuit - Refer to: Network Communications Symptom Troubleshooting - F-CAN BUS-OFF (CAN BUS without Connection to CAN Gateway) (3.0L Engine) or Network Communications Symptom Troubleshooting - HDS does not communicate with the vehicle or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS with Connection to CAN Gateway) or Network Communications Symptom Troubleshooting - F-CAN BUS-OFF (CAN BUS without Connection to CAN Gateway) or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS without Connection to CAN Gateway) or Network Communications Symptom Troubleshooting - F-CAN Lost Communication (CAN BUS with Connection to CAN Gateway) (3.0L Engine) or Network Communications Symptom Troubleshooting - B-CAN Lost Communication .

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 (IF-CAN_H, IF-CAN_L)
- -
  Between the adaptive damper control unit and the CAN gateway (VF-CAN B_H, VF-CAN B_L)
Check the adaptive damper control unit power circuit (+B_ADS, IG1_OPTION)
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;