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-Vehicle 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 .
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 | Units Displayed | Typical Data Value |
|---|---|---|---|
Operating Conditions: Engine Idling/Upper Radiator Hose Hot/Closed Throttle/Transmission in Park or Neutral/Closed Loop | |||
AC High Side Pressure | Input | kPa | Varies |
AC Pressure Sensor | Input | Volts | Varies |
AC Relay Command | Input, Output, Idle | On/Off | Off |
AC Request | Input, Idle | Yes/No | No |
Air Fuel Ratio | FE | XX :1 | 14.7:1 |
APP Angle | All | Percent | 0% |
APP at Idle | Idle | Yes/No | Yes |
APP Sensor 1 | Input, FE, Idle | Volts | 0.9-1.0 Volts |
APP Sensor 2 | Input, FE, Idle | Volts | 0.4-0.6 Volts |
BARO | Input, FE | kPa | 95-101 kPa |
Brake Switch | Input, Idle | Applied/Released | Released |
Calculated Converter Temperature | Eng | °C (°F) | Varies, typical 400-532°C (750-990°F) |
Crankshaft Position Sensor A | Input | Counts | 0-3 Counts |
Crankshaft Position Sensor B | Input | Counts | 0 Counts |
Cruise Brake Switch | Input, Idle | Applied/Released | Released |
Cruise Engaged | Input, Idle | Yes/No | No |
Cruise Resume/Accelerate | Input, Idle | On/Off | Off |
Cruise Set/Coast | Input, Idle | On/Off | Off |
Cruise Switch | Input, Idle | On/Off | Off |
Decel Fuel Cutoff | FE | Active/Inactive | Inactive |
Desired Idle Speed | Idle | RPM | 700 RPM |
ECT Sensor 1 | All | °C (°F) | 80-90°C (176-194°F) |
ECT Sensor 2 | All | °C (°F) | 80-90°C (176-194°F) |
ECT Sensor 2 | Eng | Volts | Varies |
Engine at Operating Temperature | FE | Yes/No | Yes |
Engine Load | All | Percent | 9-30% |
Engine Run Time | All | Hours/Minutes/Seconds | Varies |
Engine Oil Life Left | Input | Percent | Varies |
Engine Speed | All | RPM | 700-800 RPM |
EVAP Purge Solenoid DC | Output, FE, Aux | Percent | Varies |
EVAP Vent Solenoid | Output, Aux | On/Off | Off |
EGR Duty Cycle | Input, Output, Aux | Percent | 0 % |
EGR Sensor | Input, Aux | Volts | 1.17 Volts |
Fan Control 1 Command | Output | On/Off | Varies |
Fan Control 2 Command | Output | On/Off | Varies |
Fuel Level | Input, FE, Ign, MF | Liters/Gallons | Varies |
Fuel Level Sensor | Input, FE, Ign, Aux | Volts | Varies |
Fuel Level | FE, Ign, MF, Aux | Percent | Varies |
Fuel Pump Relay Command | Output | On/Off | On |
Fuel Tank Pressure Sensor | Input | Volts | Varies |
Fuel Tank Pressure Sensor | Input, FE | mmHg (inH2O) | Varies |
Generator F Terminal | Input | Percent | Varies |
Generator LTerminal | Input | Active/Inactive | Inactive |
HO2S Bank 1 Sensor 1 | Input, FE | Lambda | Varies, 0.998-1.002 Lambda typical |
HO2S Bank 1 Sensor 2 | Input, FE | mV | Varies |
HO2S Bank 2 Sensor 1 | Input, FE | Lambda | Varies, 0.998-1.002 Lambda typical |
HO2S Bank 2 Sensor 2 | Input, FE | mV | Varies |
HO2S Heater Bank 1 Sensor 1 | Output, FE | On/Off | On |
HO2S Heater Bank 1 Sensor 2 | Output, FE | On/Off | Varies |
HO2S Heater Bank 2 Sensor 1 | Output, FE | On/Off | On |
HO2S Heater Bank 2 Sensor 2 | Output, FE | On/Off | Varies |
Idle Increase Command (AC Request Only) | Idle | Yes/No | No |
Ignition 1 | All | Volts | 10-14 Volts |
Injector PWM Bank 1 | FE | ms | 2.4-2.8 ms |
Injector PWM Bank 2 | FE | ms | 2.4-2.8 ms |
IAT Sensor 1 | Input, Aux | °C (°F) | Varies with underhood and ambient air temperatures |
IAT Sensor 2 | Input, FE, Ign, MF, Aux, Eng, Idle | °C (°F) | Varies with underhood and ambient air temperatures |
Intake Rocker Arm Actuator Solenoid Command | Output | On/Off | Off |
Intake Rocker Arm Actuator Oil Pressure Switch | Input, Output | On/Off | Off |
Knock Sensor | Input, Output | Volts | 0.0 Volts |
Knock Control | Input, Output | Active/Inactive | Inactive |
Long Term FT Bank 1 | FE, Aux, FF, FR | Percent | -10% to +10% |
Long Term FT Bank 2 | FE, Aux, FF, FR | Percent | -10% to +10% |
Loop Status Bank 1 | FE, Eng, FF, FR | Open/Closed | Closed Loop |
Loop Status Bank 2 | FE, Eng, FF, FR | Open/Closed | Closed Loop |
Low Oil Pressure Switch | Input | Open/Closed | Closed |
Main Relay | Output | On/Off | On |
MAP Sensor | Input | Volts | 1.0-2.0 volts (varies w/ altitude) |
MAP Sensor | Input, FE, Ign, MF, Aux, Eng, Idle, FF, FR | kPa | 20-40 kPa (varies w/ altitude) |
Misfire Current Cyl #1 | MF | Counts | 0 Counts |
Misfire Current Cyl #2 | MF | Counts | 0 Counts |
Misfire Current Cyl #3 | MF | Counts | 0 Counts |
Misfire Current Cyl #4 | MF | Counts | 0 Counts |
Misfire Current Cyl #5 | MF | Counts | 0 Counts |
Misfire Current Cyl #6 | MF | Counts | 0 Counts |
Misfire History Cyl #1 | MF | Counts | 0 Counts |
Misfire History Cyl #2 | MF | Counts | 0 Counts |
Misfire History Cyl #3 | MF | Counts | 0 Counts |
Misfire History Cyl #4 | MF | Counts | 0 Counts |
Misfire History Cyl #5 | MF | Counts | 0 Counts |
Misfire History Cyl #6 | MF | Counts | 0 Counts |
Power Enrichment | FE | Yes/No | No |
Rough Road Detection | MF | Present/Not Present | Not Present |
Short Term FT Bank 1 | FE, Aux, FF, FR | Percent | -10% to +10% |
Short Term FT Bank 2 | FE, Aux, FF, FR | Percent | -10% to +10% |
Spark Advance | Ign, FF, FR | Degrees | 9° to 12° |
Start Up ECT | FE | Degrees | Varies |
TAC Limit Engine Power | Eng | Yes/No | No |
TAC Module Power Inhibit Feedback | Output | Volts | 0.67 Volts |
Throttle Plate at Idle | Idle | Yes/No | Yes |
Throttle Plate at WOT | Idle | Yes/No | No |
TP Angle | All | Percent | 9-14% |
TPS Learned Value | FE, Idle | Percent | Varies |
Vehicle Speed | All | km/h/mph | 0 km/h / 0 mph |
