How to Use the HDS (Honda Diagnostic System)

1. Turn the vehicle to the OFF (LOCK) mode, then connect the Honda Diagnostic System (HDS) to the DLC located under the driver's side of the dashboard

2. Turn the vehicle to the ON mode.

3. Make sure the HDS communicates with the vehicle and the real time AWD control unit. If it does not communicate, go to the real time AWD system symptom troubleshooting for HDS does not communicate - Refer to: Real Time AWD System Symptom Troubleshooting - Will not go into 4WD mode, Poor traction, Poor acceleration (at start), Poor climbing ability (AWD) Real Time AWD System Symptom Troubleshooting - HDS does not communicate (AWD) Real Time AWD System Symptom Troubleshooting - AWD system indicator does not go off, and no DTCs are stored (AWD) Real Time AWD System Symptom Troubleshooting - Real time AWD system is stuck in 4WD mode (AWD) Real Time AWD System Symptom Troubleshooting - Abnormal noise (AWD) Real Time AWD System Symptom Troubleshooting - AWD system indicator does not come on (AWD)  .

4. Check the diagnostic trouble code (DTC) and the freeze data, for all systems in the vehicle, troubleshoot the powertrain DTCs first and note them. Then refer to the indicated DTC's troubleshooting, and do the appropriate troubleshooting procedure.

NOTE: 

• 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.
• It is best do an ALL DTC CHECK to look for other systems DTCs that are related to the problem.