How to Troubleshoot the Fuel and Emissions Systems
Substituting the ECM/PCM
Special Tools Required
  • Honda diagnostic system (HDS)
  • Honda interface module (HIM)
  • HDS pocket tester
NOTE: Use this procedure when you have to substitute a known-good ECM/PCM during troubleshooting procedure.
  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 to ON (II).
  1. Make sure the HDS communicates with the ECM/PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting.
  1. Jump the SCS line with the HDS.
  1. Turn the ignition switch to LOCK (0).