Scan Tool Data List - Powertrain System

Use the Typical Scan Data Values table only after the Power train On Board Diagnostic (OBD) System Check has been completed, no DTCs were noted and you have determined the on-board diagnostics are functioning properly. Scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The Typical Scan Data values represent values that would be seen on a normally running engine.

IMPORTANT: A scan tool that displays faulty data should not be used, and the problem should be reported to the scan tool manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referred to in this service manual for use in diagnosis. For further information on using the scan tool to diagnose the PCM and related sensors, refer to the applicable reference section listed below. If all values are within the typical range described below, refer to Symptoms in Computers and Control Systems for diagnosis. The Typical Scan Data Values table contains all the parameters included in the following data lists arranged in alphabetical order:
^ Engine Data 1-Contains general information regarding fuel delivery and basic engine operating conditions.
^ Engine Data 2-Contains general information regarding IC, KS, A/C, and basic engine operating conditions.
^ [1][2]EVAP Data-Contains information specific to the evaporative emissions (EVAP) control system. Also displays parameters required to verify proper EVAP system operation.
^ O2S-Contains the information that is specific to the oxygen sensor (02S 1) and the rear heated oxygen sensor (H02S 2) diagnosis and the data that is required in order to verify the proper operation of the sensors.
^ Misfire Data-Contains information specific to the misfire diagnostics and parameters required to verify proper operation with regard to misfire.
^ Output Driver Data-Contains information specific to the Output Driver System.

For scan tool parameter definitions, refer to Scan Tool Data Definitions.

IMPORTANT: Use the Typical Scan Data Values only after the following conditions are met:
^ The Powertrain On Board Diagnostic (OBD) System Check has been completed.
^ The engine is idling unless checking a value at a specified RPM.
^ The Throttle is closed unless checking a value at a specified RPM.
^ The vehicle is in PARK or NEUTRAL.
^ The vehicle is operating in Closed Loop.
^ The vehicle accessories are turned OFF.