The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.

Use the Engine Scan Tool Data List only after the following conditions are determined:

Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.

Important: Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service information for use in diagnosis.

The column labeled Data List indicates where a parameter is located on the scan tool. Review the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:

All: The Parameter is in all data lists indicated below.

Eng: Engine Data

EGR: EGR Data

EVAP: EVAP Data

FT: Fuel Trim Data

HO2S: O2S/HO2S Data

MF: Misfire Data

TAC: Throttle Actuated Control Data

CC: Cruise Control Data

CH: Cooling/HVAC Data

IPC: IPC Data

FF: Freeze Frame Data

FR: Failure Records Data

Scan Tool Parameter	Data List	Parameter Range/Units	Typical Data Values
Operating Conditions: Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
FC Relay 1 Command	CH	On/Off	Off
FC Relay 2 Command	CH	On/Off	Off
Fans Low Speed Command	CH	On/Off	Off
Fans High Speed Command	CH	On/Off	Off