Without Scan Tool
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 behind the right side of the center console.) Turn the ignition switch ON (II).