Without Scan Tool
Note: Although this model will flash codes on the Malfunction Indicator Light a Scantool is the preferred method for diagnosis. Honda service manuals for this model do not explain how to read the flashout, nor does it specifically address diagnosis via the MIL. Consequently, if you are able to read a code with the MIL the manual still does not address which specific diagnostic chart to use (i.e. flash code 63 has three different diagnostic charts assigned to it.) Diagnostic Trouble Code Descriptions
When the MIL has not come on , but there is a driveability problem, refer to the Symptom Chart.
Symptom Related Diagnostic Procedures
DTCs will be indicated by the blinking of the Malfunction Indicator Lamp (MIL) with the SCS service connector connected.
Connect the SCS service connector to Service Check Connector as shown. (The 2P Service Check Connector is located under the dash on the passenger's side of the vehicle.) Turn the ignition switch ON (II).