With Manufacturer's Scan Tool

How to Use the HDS (Honda Diagnostic System)

If the MIL (malfunction indicator lamp) has come on




1. Start the engine, and check the MIL (A).

NOTE: If the ignition switch is turned ON (II), and the engine is not started, the MIL will stay on for 15-20 seconds.




2. If the MIL stays on, connect the HDS to the data link connector (DLC) (A) located behind the driver's side of the front console.
3. Turn the ignition switch ON (II).
4. Make sure the HDS communicates with the vehicle and the ECM. If it doesn't Go to the DLC circuit troubleshooting. Testing and Inspection
5. Check the diagnostic trouble code (DTC) and note it. Also check the freeze data and on-board snapshot data, and download any data found. Then Refer to the indicated DTC's troubleshooting, and begin the appropriate troubleshooting procedure.

NOTE:
- Freeze data indicates the engine conditions when the first malfunction, misfire, or fuel trim malfunction was detected.
- The HDS can read the DTC, freeze data, current data, and other engine control module (ECM) data.
- For specific operations, Refer to the user's manual that came with the HDS.

6. If no DTCs are found, Go to MIL troubleshooting. MIL Circuit Troubleshooting

If the MIL did not stay on
If the MIL did not stay on but there is a driveability problem, do the symptom troubleshooting.

If you can't duplicate the DTC
Some of the troubleshooting requires you to reset the ECM and try to duplicate the DTC. If the problem is intermittent and you can't duplicate the code, do not continue through the procedure. To do so will only result in confusion and possibly, a needlessly replaced ECM.