How to Troubleshoot the Fuel and Emissions Systems
Substitute the ECM
Special Tools Required
  • Honda diagnostic system (HDS)
  • Honda interface module (HIM)
  • HDS pocket tester
Use this procedure when you have to substitute a known-good ECM during troubleshooting procedure.
  1. Make sure you have the anti-theft code for audio system.
  1. 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. Make sure the HDS communicates with the vehicle and the ECM. If it doesn't, troubleshoot the DLC circuit.
  1. Remove the battery.