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Reading and Clearing Diagnostic Trouble Codes

General Troubleshooting Information

How to Check for DTCs with the HDS

1. Make sure the ignition switch is in LOCK (0).
2. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.






3. Turn the ignition switch to ON (II).
4. Make sure the HDS communicates with the vehicle and the AcuraLink control unit (XM receiver). If it doesn't, troubleshoot the DLC circuit.
5. Select Telematics in the BODY ELECTRICAL menu.
6. Select DTCs in the Telematics CONTROL menu.
7. Check for DTCs. If any DTCs are indicated, write down the DTCs, then go to the indicated DTC troubleshooting. If no DTCs are indicated, refer to symptom troubleshooting. Audio System

NOTE:
- After troubleshooting, clear the DTCs with the HDS.
- For specific operations, refer to the user's manual that came with the HDS.

Updating the AcuraLink Control Unit

Special Tools Required
- GNA600 kit and an iN workstation with AcuraLink update software
- 256MB PCMCIA Memory Card
- AcuraLink Reprogramming Cable
- AcuraLink Reprogramming Cable Adapter

NOTE:
- Whenever you install a new AcuraLink control unit, you must update the control unit with the latest software.
- The GNA600 is the only tool currently available to update the AcuraLink control unit.
- If you are updating a control unit in a new vehicle, make sure all the fuses are installed.
- Make sure the iN workstation has the latest HDS software installed (The AcuraLink update software is contained in the HDS update CD).
- The update may take up to 60 minutes.
- You cannot update an AcuraLink control unit with its current or previous software versions. It will only accept a new software version.
- Before you update the AcuraLink control unit, test the vehicle battery, and only proceed if the results are good. Make sure the battery is connected to a battery booster (not a battery charger) while updating the control unit.
- If the battery is not in good condition, or it dies during the updating procedure, you may damage the AcuraLink control unit.
- If you encounter errors in the software, follow the on-screen instructions, or if necessary, reboot the iN workstation, and try again.
- There are five process involved in updating the AcuraLink control unit:
- Setting up the GNA600
- Capturing the current program ID from the AcuraLink control unit
- Download the new software to the GNA600
- Update the software in the vehicle's AcuraLink control unit
- Confirm the AcuraLink self-diagnosis
- Do the update with the ignition switch turned to LOCK (0).
- To prevent damage to the AcuraLink control unit, do not operate anything electrical (brakes, head lights, etc.) during the update.
- Check any official Honda service website for more service information about updating the AcuraLink control unit.
- To update the AcuraLink control unit, you must connect the GNA600 to the AcuraLink connector (A), not the DLC.
- Before you update an AcuraLink control unit, read the procedure. The order of connecting and disconnecting connectors is critical, and some steps must be done within a specified period of time. If the steps are not followed exactly, you may have to repeat the procedure form the start, and in same cases, you may damage the GNA600 or the AcuraLink control unit.






1. Make sure the ignition switch is turned to LOCK (0).
2. Open the trunk lid and remove rear shelf under cover.
3. Launch the AcuraLink Update program and follow the on-screen instructions to complete the update.

NOTE:
- If the software in the AcuraLink control unit is the latest, disconnect the update tool from the AcuraLink connector.
- If the update is part of a troubleshooting or a repair procedure, return to that procedure and continue troubleshooting or repairing the vehicle.