Symptom Troubleshooting Index

When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.

Symptom	Diagnostic procedure	Also check for
HDS does not communicate with the active damper control unit or the vehicle	Troubleshoot the DLC circuit (see DLC CIRCUIT TROUBLESHOOTING )	Faulty data link cable
Active damper system indicator does not come on	Do the gauge control module troubleshooting (see SELF-DIAGNOSTIC FUNCTION ) Substitute a known-good active damper control unit, then recheck. If it is OK, replace the original active damper control unit (see ACTIVE DAMPER CONTROL UNIT REPLACEMENT )
Active damper system indicator does not go off, and no DTCs are stored	Symptom Troubleshooting (see ACTIVE DAMPER SYSTEM INDICATOR DOES NOT GO OFF, AND NO DTCS ARE STORED )
Integrated dynamics system switch does not work (integrated dynamics system mode cannot be selected)	Symptom Troubleshooting (see INTEGRATED DYNAMICS SYSTEM SWITCH DOES NOT WORK (INTEGRATED DYNAMICS SYSTEM MODE CANNOT BE SELECTED) )