1. If the MIL stays on, connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.

1. Turn the ignition switch ON (II).

1. Check the diagnostic trouble code (DTC) and note it. Also check the freeze data. Refer to the DTC 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)/powertrain control module (PCM) data.
   - For specific operations, refer to the user's manual that came with the HDS.

1. If no DTCs are found, go to MIL troubleshooting.