Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Scan Tool Data List
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.
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:.
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 |
|---|---|---|---|
| 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 | All | °C (°F) | 80-90°C (176-194°F) |
| 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 |
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.