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:
| • | The Diagnostic System Check-Engine Controls is completed. |
| • | There are no diagnostic trouble codes (DTCs). |
| • | 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 Engine Scan Tool Data List represents the values that would be seen on a normal running 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 can result in misdiagnosis and in unnecessary parts replacement.
Only the parameters listed below are referenced in this service manual for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls for 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.Input: General Info-Inputs
Output: General Info-Outputs
FE: Fuel and Emissions
Ign: Ignition
MF: Misfire
Aux: Auxiliary Emissions
Idle: Idle/Speed Control
Eng: Engineering
FF: Freeze Frame Data List
FR: Failure Record Data List
Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off | |||
A/C High Side Pressure | Input | 0-3,450 kPa / 0-500 psi | Varies |
A/C High Side Pressure Sensor | Input, Output | 0-5 Volts | Varies |
A/C Relay Command | Input, Output, Idle | On/Off | Off |
A/C Request | Input, Idle | Yes/No | No |
APP at Idle | Idle | Yes/No | Yes |
APP Sensor 1 | Input, FE, Idle | 0.9-4.5 Volts | 1 Volt |
APP Sensor 2 | Input, FE, Idle | 0.45-2.25 Volts | 0.5 Volt |
Battery Voltage | All | 0-25.5 Volts | 12.8-14.2 Volts |
Brake Switch | Input, Idle | Applied/Released | Released |
CMP Active Counter | Input, Ign | 0-256 Counts | Varies |
Cruise Clutch Switch (If Equipped) | Input, Idle | Applied/Released | Released |
Cruise Switch | Input, Idle | On/Off | Off |
Cruise Brake Switch | Input, Idle | Applied/Released | Released |
Cruise Resume/Accel. | Input, idle | On/Off | Off |
Cruise Set/Coast | Input, idle | On/Off | Off |
Desired Idle Speed | Idle | 0-7,000 RPM | 650 RPM |
ECT | ALL | -39 to +140°C/-38 to +284°F | 85-105 °C/185-220°F |
Engine Load | ALL | 0-99% | 2% |
Engine Oil Life Left | Input | 0-100% | Varies |
EGR Duty Cycle | Input, Output, FE, Ign, MF, Aux, Idle | 0-100% | 0% |
EGR Sensor | Input, Aux | 0-5 Volts | .82 Volts |
Engine Run Time | ALL | 0:00:00 | Varies |
Engine Speed | ALL | RPM | 650 RPM |
EVAP Purge Solenoid DC | Output, FE, Aux | 0-100% | Varies |
EVAP Vent Solenoid | Output | On/Off | Off |
Fan Speed | Output | Off/Low/High | Varies |
Fan Control 1 | Output | On/Off | Varies |
Fan Control 2 | Output | On/Off | Varies |
Fuel Level | Input, Ign | Gal/L | Varies |
Fuel Level | Input, FE, Ign | 0-5 Volts | Varies |
Fuel Pump Relay Command | Output | On/Off | On |
Fuel Shut-off Main | Eng | Yes/No | No |
Fuel Shut-off Sec | Eng | Yes/No | No |
Fuel Tank Pressure | Input, Aux | in H2O/mm Hg | Varies |
Fuel Tank Press | Input, Aux | 0-5 Volts | Varies |
GEN L-Terminal | Input | High/Low | High |
HO2S Bank 1 or Bank 2 Sensor 1 | Input, FE, Aux | 0-1 Volt | Varies between 0-1 Volt |
HO2S Bank 1 or Bank 2 Sensor 2 | Input, FE, Aux | 0-1000 mV | Varies 400-800 mV |
HO2S Bank 1 or Bank 2 Sen. 1 ohms | FE | 0-∞ | 0 |
HO2S Bank 1 or Bank 2 Sen. 2 ohms | FE | 0-∞ | 0 |
HO2S Bn 1 or Bn 2 Sen. 1 Heater | FE | On/Off | Varies |
HO2S Bn 1 or Bn 2 Sen. 1 Heater | FE | On/Off | Varies |
IAT | ALL | -39 to +140°C/-38 to +284°F | Varies |
Ignition On | Input | Yes/No | Yes |
Injector Pulse Width | FE | 0-100 ms | 3.0-5.4 ms |
Intake Plenum Switchover Valve | Output | On/Off | Off |
Knock Sensor 1 | Ign | Active/Inactive | Inactive |
Knock Sensor 2 | Ign | Active/Inactive | Inactive |
Knock Sensor 1 | Input, Ign | 0.25-2.67 Volts | 1.10 Volts |
Knock Sensor 2 | Input, Ign | 0.25-2.67 Volts | 1.10 Volts |
Knock Retard Cyl. 1-6 | Ign | 0-191 Degrees | 0 Degrees |
Low Oil Pressure | Input | Yes/No | No |
LT FT Bn. 1 or Bn. 2 Cruise/Accel. | FE, Aux | -100 to 100% | 0% |
LT FT Bn. 1 or Bn. 2 Idle/Decel. | FE, Aux | -100 to +100% | 0% |
Loop Status Bank 1 or Bank 2 | FE | Open/Closed | Closed |
MAF | ALL | 0-655 g/s | 3.4-6.3 g/s |
MAF Sensor | Input | 0-5 Volts | 1.2-1.5 Volts |
Main Relay Command | Output | On/Off | On |
MAP | ALL | kPa/Volts | 45 |
Misfire Current Cyl. 1-6 | MF | 0-255 Counts | 0 |
Misfire History Cyl. 1-6 | MF | 0-255 Counts | 0 |
Park/Neutral Switch (If Equipped) | Idle | P-N/R-D-L | P-N |
Short Term FT Bank 1 or Bank 2 | FE, Aux | -100 to +100% | -3% to +3% |
Spark | Ign | -133 to +78 Degrees | 2-5 Degrees |
TAC Learn Counter | Eng | 0-255 Counts | Varies |
TAC Limit Authority | Eng | Yes/No | No |
TAC Limit Power | Eng | Yes/No | No |
Torque Delivered | Input | 0-100% | 0% |
Torque Requested | Input | 0-100% | 100% |
TP Angle | ALL | 0-99% | 0 percent |
TP Sensor 1 | Input, FE, Idle | 0-5 Volts | 0.5-0.8 Volts |
TP Sensor 2 | Input, FE, Idle | 0-5 Volts | 4.1-4.5 Volts |
Vehicle Speed | ALL | km/mi | Varies |
