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.Eng 1: Engine Data 1 List
Eng 2: Engine Data 2 List
Eng 3: Engine Data 3 List
EE: Enhanced EVAP Data
FF: Freeze Frame Data List
FR: Failure Record Data List
FT: Fuel Trim Data List
MF: Misfire Data List
TAC: TAC 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 | Eng 1, 2, FR | 0-3,450 kPa / 0-500 psi | Varies |
A/C High Side Pressure Sensor | Eng 1, 2 | 0-5 Volts | Varies |
A/C Off for WOT | Eng 1, TAC | Yes/No | No |
A/C Pressure Disable | Eng 1 | Yes/No | No |
A/C Relay Command | Eng 1, 2, 3 | On/Off | Off |
A/C Request | Eng 1, 2 | Yes/No | No |
Air Fuel Ratio Bank 1 or Bank 2 | Ft | 14.7:1 | 14.7:1 |
APP Angle | Eng 1, 2, EVAP, FT, FR, MF, TAC | 0-99% | 0 percent at idle |
APP at Idle | TAC | 0-99% | Varies |
APP Sensor 1 | TAC | 0.9-4.5 Volts | 1 Volt |
APP Sensor 2 | TAC | 0.45-2.25 Volts | 0.5 Volt |
Battery Voltage | Eng 1, 2, 3, EVAP, TAC | 0-25.5 Volts | 12.8-14.2 Volts |
Calculated Baro | Eng 1, EVAP, FT | 65-104 kPa -16 psi | Varies with altitude |
Calc. Converter Temp. (most accurate after warm-up, cruising) | Eng 1, FT | -40 to + 950°C /-40 to + 1742°F | 600-900°C/1112-1652°F |
Catalyst Overtemp Bn. 1 | FT | Yes/No | No |
Catalyst Overtemp Bn. 2 | FT | Yes/No | No |
* Clutch Start Switch (If Equipped) | Eng 1, 2, TAC | On/Off | Off |
CMP Active Counter | Eng 2 | 0-256 Counts | Varies |
Cooling Fan After Run | Eng 3, FR | Requested/Not Requested | Not Requested |
Commanded Cooling Fan | Eng 2, 3, FR | Off/Low/High and Aux if Equipped | Off |
Crank Request | Eng 1, 3 | Yes/No | No |
* Cruise Clutch Switch (If Equipped) | Eng 1, 3, TAC | Applied/Released | Released |
Cruise Engaged | Eng 1, 2, 3, FR, TAC | Yes/No | No |
Cruise On/ Off Switch | TAC, FR | On/Off | Off |
Cruise Release Brake Pedal Switch | Eng 1, 3, TAC, FR | Applied/Released | Released |
Cruise Resume/Accel. Switch | TAC, FR | On/Off | Off |
Cruise Set/Coast Switch | TAC, FR | On/Off | Off |
Cruise VSS Out of Range | Eng 3, TAC, FR | Yes/No | Yes |
Current Gear | Eng 1, 2, 3, FR, FT | P/N/R/1-5 | P/N |
Decel. Fuel Cutoff | Eng 2, FR, FT | Active/Inactive | Inactive |
Delivered Torque PWM Duty Cycle | Eng 2 | 0-100% | 10% |
Desired Idle Speed | Eng 1, 2, 3, EVAP, FR, TAC | 0-7,000 RPM | 650 RPM |
Distance Since First Failure | FR | km/mi | Varies |
DTC No. 1 | Eng 1, EVAP, FT, TAC | PXXXX | Varies |
DTC No. 2 | Eng 1, EVAP, FT, TAC | PXXXX | Varies |
ECM in VTD Fail Enable VTD | Eng 3 | Yes/No | No |
ECT | Eng 1, 2, 3, EVAP, FF, FR, FT, MF | -39 to +140°C/-38 to +284°F | 85-105 °C/185-220°F |
Engine At Operating Temperature | FR | Yes/No | Varies |
Engine Drag Control Active | TAC | Yes/No | Yes |
Engine Idling | FR | Yes/No | Yes |
Engine Load | Eng 1, FF | 0-99% | 2% |
Engine Oil Life Remaining | Eng 3 | 0-100% | Varies |
Engine Oil Level Switch | Eng 2, 3 | OK/Low | OK |
Engine Oil Pressure Switch | Eng 3, FR | OK/Low | OK |
Engine Run Time | ALL | 0:00:00 | Varies |
Engine Speed | ALL | RPM | 650 RPM |
EVAP Canister Purge | Eng 1, EVAP, FR, FT | 0-100% | Varies |
EVAP Vent Solenoid | Eng 1, EVAP , FR, FT | On/Off | Off |
Extended Travel Brake Pedal Switch | Eng 1, 2, 3, TAC | Applied/Released | Released |
Fast idle for A/C Performance | Eng 1, TAC | Active/Inactive | Inactive |
Fast Idle for Cold Start | TAC | Active/Inactive | Inactive |
Fast Idle for Generator Performance | Eng 2, TAC | Active/Inactive | Inactive |
Fast Idle for Heater Performance | TAC | Active/Inactive | Inactive |
Fast Idle for Hot Start | TAC | Active / Inactive | Inactive |
Fuel Level | Eng 1, EVAP , FR, MF | Gal/L | Varies |
Fuel Level Sensor Left Tank | Eng 1, EVAP | 0-5 Volts | Varies |
Fuel Level Sensor Right Tank | Eng 1, EVAP | 0-5 Volts | Varies |
Fuel Pump Relay Command | Eng 1, FR | On/Off | On |
Fuel Tank Pressure | Eng 1, EVAP | in H2O/mm Hg | Varies |
Fuel Tank Pressure Sensor | Eng 1, EVAP , FR | 0-5 Volts | Varies |
GEN L-Terminal Signal Command | Eng 2, FR | On/Off | On |
GEN F-Terminal Signal | Eng 2 | % | On |
HO2S Bank 1 or Bank 2 Sensor 1 | Eng 1,2, EVAP, FF, FR, FT | 0-4,998 mV | Varies between 30-800 mV |
HO2S Bank 1 or Bank 2 Sensor 2 | Eng 1, 2, EVAP, FF, FR, FT | 0-4,998 mV | Varies 400-700 mV |
HO2S Heater Bn 1 or Bn 2 Sen. 1 | FT | High/Low | Varies |
HO2S Heater Bn 1 or Bn 2 Sen. 2 | FT | High/Low | Varies |
HO2S Heater Bn 1 or Bn 2 Sen. 1 | FT | 0-99% | Varies |
HO2S Heater Bn 1 or Bn 2 Sen. 2 | FT | 0-99% | Varies |
IAT | Eng 1, 2, 3, EVAP, FF, FR, FT, MF | -39 to +140°C/-38 to +284°F | Varies |
Ignition 0 | Eng 1, 3, EVAP, FT, TAC | 0-25.5 Volts | 12.8-14.2 Volts |
Ignition 1 | Eng 1, 2, 3, EVAP, FR, FT, MF, TAC | 0-25.5 Volts | 12.8-14.2 Volts |
Ignition Dwell | Eng 1 | 1-4 ms | 1.9 ms |
Ignition State | Eng 1 | On/Cranking/Off | On |
Inj. PWM Average Bank 1 or Bank 2 | Eng 2, 3, EVAP, FT | 0-9 ms | 3.0-5.4 ms |
Intake Manifold Tuning (IMT) Valve Solenoid | Eng 2, FR | Open/Closed | Closed |
Intake Manifold Runner Control (IMRC) Solenoid | Eng 2, FR | Open/Closed | Open |
Knock Control | Eng 1, FR | Active/Inactive | Inactive |
Knock Sensor 1 | Eng 1 | 0.25-2.67 Volts | 4.6-5.4 Volts |
Knock Sensor 2 | Eng 1 | 0.25-2.67 Volts | 4.6-5.4 Volts |
Knock Retard Cyl. 1-6 | Eng 1 | 0-191 Degrees | 0 Degrees |
LT FT Bn. 1 or Bn. 2 Cruise/Accel. | Eng 1, 2, 3, EVAP, FF, FR, FT | -100 to 100% | 0% |
LT FT Bn. 1 or Bn. 2 Idle/Decel. | Eng 1, 2, 3, EVAP, FR, FT | -100 to +100% | 0% |
Loop Status Bank 1 or Bank 2 | Eng 1, 2, 3, EVAP, FF, FR, FT | Open/Closed | Closed |
MAF | Eng 1, 2, 3, EVAP, FF, FR, FT, MF, TAC | 0-655 g/s | 3.4-6.3 g/s |
MAF Sensor | Eng 1, 3, FR, MF, TAC | 0-5 Volts | 1.2-1.5 Volts |
Main Relay Command | Eng 1 | On/Off | On |
MIL | Eng 1 | On/Off | Off |
MIL Flashing | Eng 1 | Yes/No | No |
Mileage Since DTC Cleared | Eng 1, 3 | km/mi | Varies |
Mileage Since MIL Request | Eng 1 | km/mi | Varies |
Misfire Current Cyl. 1-6 | MF | 0-255 Counts | 0 |
Misfire History Cyl. 1-6 | MF | 0-255 Counts | 0 |
Number of DTC(s) | Eng 1, EVAP, FT, TAC | # | 0 |
Password Learning Enabled | Eng 3 | On/Off | Off |
* PNP Switch (If Equipped) | Eng 2, 3, TAC | In Gear /Park/Neutral | Park/Neutral |
Power Enrichment | Eng 2, FR, FT | Active/Inactive | Inactive |
Power Management (TAC Error) | Eng 3, TAC | Active/Inactive | Inactive |
Reduced Power (TAC Error) | Eng 3, TAC | Active/Inactive | Inactive |
Requested Torque PWM Duty Cycle | Eng 2, TAC | 0-99% | 90% |
Rough Road Detection | Eng 2, MF | Present/Not Present | Not Present |
Short Term FT Bank 1 or Bank 2 | Eng 1, 2, 3, EVAP, FF, FR, FT | -100 to +100% | -3% to +3% |
Spark Advance | Eng 1, 2, 3, FF, FT | -133 to +78 Degrees | 2-5 Degrees |
Starter Relay Command | Eng 1, 3 | On/Off | Off |
Start Up ECT | Eng 2, EVAP, FR, FT | -39 to +140°C/-38 to +284°F | Varies |
Start Up IAT | Eng 2, EVAP, FT | -39 to +140°C/-38 to +284°F | Varies |
Stoplamp Pedal Switch | Eng 1, 2, 3, FR, TAC | Applied/Released | Released |
TAC Forced Engine Idle | Eng 3, TAC | Active/Inactive | Inactive |
TAC Learn Counter | TAC | 0-255 Counts | Varies |
TAC Limit Power | Eng 1, TAC | Yes/No | No |
Throttle Actuator DC | Eng 1, TAC | 0-99% | Varies |
Throttle Plate at Idle | TAC, FR | Yes/No | Yes |
Throttle Plate at WOT | TAC, FR | Yes/No | No |
TP 1 Learned Min | TAC | 0-5 Volts | 0-0.5 Volts |
TP 2 Learned Min | TAC | 5-0 Volts | 5-3.7 Volts |
TP Angle | Eng 1, 2, 3, EVAP, FF, FR, FT, MF, TAC | 0-99% | 0 percent |
TP Desired Angle | Eng 1, 2, EVAP, FT, TAC | 0-99% | Varies |
TP Sensor 1 | Eng 1, 2, 3, TAC | 0-5 Volts | 0.5-0.8 Volts |
TP Sensor 2 | Eng 1, 2, 3, TAC | 0-5 Volts | 4.1-4.5 Volts |
Vehicle Speed | Eng 1, 2, 3, EVAP, FF, FR, FT, MF, TAC | km/mi | Varies |
Volumetric Efficiency | Eng 1,2,3, EVAP, FR, FT, TAC | 0-100% | 13% |
