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How to Troubleshoot the Adaptive Damper System

How to Troubleshoot the Adaptive Damper System 12823

Honda Adaptive Damper System Warning

  • If an electrical problem with adaptive damper system is detected, adaptive damper system warning is displayed on the multi-Information display (MID).
  • In case of adaptive damper control unit is not connected or broken, adaptive damper system warning is displayed on the MID, but no DTC is stored in other ECUs.
  • In case of adaptive damper control unit is connected and has detected a problem, adaptive damper system warning is displayed on the MID, and a DTC is stored in adaptive damper control unit.

Diagnostic Trouble Code (DTC)

  • The memory can hold 10 DTCs. However, when the same DTC is detected more than once, the more recent DTC is written over the earlier one. Therefore, when the same problem is detected repeatedly, it is memorized as a single DTC.
  • The DTCs are memorized in an EEPROM in the adaptive damper control unit. Therefore, the memorized DTCs cannot be erased by disconnecting the 12 volt battery. Do the specified procedures to clear the DTCs

Fail Safe Mode
Depending on the severity of the error, the adaptive damper system will switch to fail safe mode. The details of fail safe mode, refer to Adaptive Damper System Description.

How to Troubleshoot DTCs
The troubleshooting procedures assume that the cause of the problem is still present and the adaptive damper system warning on the MID is displayed. Following the procedure when the adaptive damper system warning on the MID does not display on can result in incorrect diagnosis.

  1. Question the customer about the conditions when the problem occurred, and try to reproduce the same conditions for troubleshooting. Find out when the displayed, such as while turning, after turning, when the vehicle was at a certain speed, etc.
  2. When the adaptive damper system warning does not display on the MID during the test-drive, but troubleshooting is done based on the DTC, check for loose connectors, poor terminal contact, etc., in the affected circuit before you start troubleshooting.
  3. After troubleshooting, clear the DTC and test-drive the vehicle. Be sure the adaptive damper system warning does not display on the MID.

Intermittent Failures
The term “intermittent failure” means a system may have had a failure, but it checks OK now. If you cannot reproduce the condition, check for loose connections and terminals. Also check ground and power connections related to the circuit that you are troubleshooting.

How to Retrieve DTCs

  1. Turn the vehicle to the OFF (LOCK) mode, connect the HDS to the data link connector (DLC).
  2. Turn the vehicle to the ON mode.
  3. Make sure the HDS communicates with the vehicle and the adaptive damper control unit. If it does not, go to the DLC circuit troubleshooting.
  4. Follow the prompts on the HDS to display the DTC(s) on the screen. After determining the DTC, refer to the DTC troubleshooting. Do the all systems DTC check, and troubleshoot any powertrain DTCs first.
  5. Turn the vehicle to the OFF (LOCK) mode.

NOTE:

  • Freeze data indicates the adaptive damper system conditions when the first system malfunction that activated the indicator was detected.
  • The HDS can read the DTC, the freeze data, the current data, and other system data.
  • For specific operations, refer to the Help menu that came with the HDS.

How to Clear DTCs

  1. Turn the vehicle to the OFF (LOCK) mode, connect the HDS to the data link connector (DLC).
  2. Turn the vehicle to the ON mode.
  3. Make sure the HDS communicates with the vehicle and the adaptive damper control unit. If it does not, go to the DLC circuit troubleshooting.
  4. Clear the DTC(s) by following the screen prompts on the HDS.
  5. Turn the vehicle to the OFF (LOCK) mode.

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