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 - 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.
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
-
Parameter is in All Data Lists
- CMP
-
CMP Actuator Data List
- ENG
-
Engine Data List
- EVAP
-
EVAP Data List
- FT
-
Fuel Data List
- HO2S
-
HO2S Data List
- IGN
-
Ignition Data List
- IND
-
Induction Data
- MF
-
Misfire Data List
- TAC
-
TAC Data List
Scan Tool Data List
| 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 | |||
| 5-Volt Reference 1 or 2 | EVAP, IGN, IND, TAC | Volts | 4.5 |
| 5-Volt Reference 1 or 2 Circuit Status | EVAP, IGN, IND, TAC | OK/Fault | OK |
| A/C Relay Command | ENG, IND, MF, TAC | On/Off | Off |
| Air Flow Calculated | ENG, EVAP, FT, HO2S, IND, MF, TAC | g/s | - |
| Ambient Air Temperature | ENG, EVAP | °C/°F | Varies |
| APP Indicated Angle | ALL | 0-100% | 0.0 |
| APP Sensors | TAC | Volts | 0.0 |
| APP Sensor 1 | TAC | 0.9-4.5 Volts | 0.92 Volt |
| APP Sensor 1 Indicated Position | TAC | % | 0.0 |
| APP Sensor 2 | TAC | 0.42-2.25 Volts | 0.43 Volt |
| APP Sensor 2 Indicated Position | TAC | % | 0.0 |
| APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
| BARO | ENG, EVAP, FT, HO2S, IGN, IND | 65-104 kPa -16 psi | Varies with altitude |
| BARO Sensor | IND | Volts | Varies |
| BPP Circuit Signal | TAC | Applied/Released | Released |
| BPP Signal | TAC | Applied/Released/Invalid | Released |
| CAC Int Pump Relay Circuit Status | IND | OK/Incomplete/Open/Short B+/Short Gnd | OK |
| CAC Int Pump Relay Command | IND | On/Off | Varies |
| Calc. TWC Temp. Bank 1 or Bank 2 | FT, MF | °C/°F | Varies |
| Catalytic Converter Protection Active | FT, HO2S | Yes/No | No |
| CKP Active Counter | IGN | Counts | Incrementing |
| CKP Resync Counter | IGN | Counts | Varies |
| CKP Sensor | IGN | RPM | Engine idle speed |
| Cmmd. A/F Equivalence Ratio | ENG, FT, HO2S, IND | Ratio | 14.7:1 |
| CMP Active Counter | CMP, IGN | Counts | Incrementing |
| CMP Sensor | CMP, IGN, MF | RPM | Engine idle speed |
| Cold Startup | ENG, EVAP | YES/NO | Varies |
| Cruise Control Active | ENG, TAC | Active/Inactive | Inactive |
| Cycles of Misfire Data | MF | 0-99 | Incrementing |
| Cylinder 1-8 IC Circuit Status | MF | Incomplete/Short B+/Short Gnd/ Open | OK |
| Cylinder 1-8 Injector Circuit Status | MF | Incomplete/Short B+/Short Gnd/Open | OK |
| Decel. Fuel Cutoff | ENG, FT, HO2S | Active/Inactive | Inactive |
| Desired Exh. CMP Bank 1 or Bank 2 | CMP | Degrees | Varies |
| Desired Idle Speed | ENG, CMP, EVAP, IND, TAC | 0-7,000 RPM | 650 RPM |
| Desired Int. CMP Bank 1 or Bank 2 | CMP | Degrees | Varies |
| Distance Since DTC Cleared | ENG | Miles/Kilometers | Varies |
| EC Ignition Relay Circuit Status | TAC | OK/Incomplete/Short B+/Short Gnd/Open | OK |
| EC Ignition Relay Command | ENG, TAC | On/Off | On |
| EC Ignition Relay Feedback Signal | ENG, TAC | Volts | 13.5 V |
| ECT Sensor | ALL | -39 to +140°C/-38 to +284°F | 85-105°C/185-220°F |
| Engine Load | ALL | 0-99% | 2% |
| Engine Off Time | EVAP | 0:00:00 | Varies |
| Engine Oil Level Switch | ENG, CMP | OK/Low | OK |
| Engine Oil Life Remaining | ENG, CMP | % | Varies |
| Engine Oil Pressure Sensor | ENG, CMP, MF | kPa/psi | Varies |
| Engine Oil Temperature Calculated | CMP | °C/°F | Varies |
| Engine Oil Temperature Sensor (if equipped) | CMP | °C/°F | Varies |
| Engine Run Time | ALL | 0:00:00 | Varies |
| Engine Speed | ALL | RPM | 650 RPM |
| EVAP Fault History | EVAP | Vacuum/Purge Valve Leak/Small Leak/Weak Vacuum/No Test Result | Vacuum |
| EVAP Purge Solenoid Command | ENG, EVAP, FT, HO2S | 0-100% | Varies |
| EVAP Purge Solenoid Circuit Status | EVAP | Incomplete/Fault/OK | Incomplete |
| EVAP Vent Solenoid Command | ENG, EVAP | Venting/Not Venting | Not Venting |
| EVAP Vent Solenoid Circuit Status | EVAP | Incomplete/Fault/OK | Incomplete |
| Exh. CMP Angle Bank 1 or Band 2 | CMP | Degrees | Varies |
| Exh. CMP Bank 1 or Bank 2 Active Counter | CMP, IGN | Counts | Varies |
| Exh. CMP Bank 1 or Bank 2 Command | CMP | % | Varies |
| Exh. CMP Bank 1 or Bank 2 Variance | CMP | Degrees | Varies |
| Ext. CMP Solenoid Bn 1 or Bn 2 Circuit Status | CMP | OK/Incomplete/Short B+/Short Gnd/Open | OK |
| Ext. Travel BPP Signal | TAC | Applied/Released/Invalid | Released |
| Fuel Level Sensor - Left Tank | EVAP | 0-5 Volts | Varies |
| Fuel Level Sensor - Right Tank | EVAP | 0-5 Volts | Varies |
| Fuel Pump Relay Circuit Status | ENG | Incomplete/Fault/OK | OK |
| Fuel Pump Relay Command | ENG | On/Off | On |
| Fuel Tank Level Remaining | ENG, EVAP, FT, MF | % | Varies |
| Fuel Tank Pressure Sensor | EVAP | Volts | Varies |
| Fuel Tank Pressure Sensor | ENG, EVAP | in H2O/mm Hg | Varies |
| Fuel Tank Rated Capacity | EVAP | Liters/Gal | Varies |
| Fuel Trim Cell | ENG, FT | Varies | 2 |
| Fuel Trim Learn | FT | Enabled/Disabled | Enabled |
| Fuel Trim System Test State | FT | Disabled, Enabled, Run Purge Test, Monitoring | Varies |
| Fuel Volatility | EVAP, FT | Low/Moderate/High | Varies |
| HO2S Bank 1 or Bank 2 Sensor 1 | ENG, EVAP, FT, HO2S, IND | mV | 80-850 |
| HO2S Bank 1 or Bank 2 Sensor 2 | ENG, FT, HO2S | mV | Varies 400-800 mV |
| HO2S Bank 1 or Bank 2 Sensor 1 Heater | HO2S | amps | Varies |
| HO2S Bank 1 or Bank 2 Sensor 2 Heater | HO2S | amps | Varies |
| HO2S Bank 1 Sensor 1 Heater Command | HO2S | % | Varies |
| HO2S Bank 1 Sensor 1 Heater Command | HO2S | ON/OFF | ON |
| HO2S Bank 1 or Bank 2 Sensor 2 Heater Command | HO2S | % | Varies |
| HO2S Bank 1 or Bank 2 Sensor 2 Heater Command | HO2S | ON/OFF | ON |
| Hot Open Loop | HO2S, FT | Active/Inactive | Inactive |
| IAT Sensor | ALL | -39 to +140°C/-38 to +284°F | Varies |
| IAT Sensor 2 | ENG, EVAP, IND | -39 to +140°C | Varies |
| Ignition Accessory Signal | ENG, TAC | ON/OFF | ON |
| Ignition Off Time | ENG, EVAP | 0:00:00 | Varies |
| Ignition 1 Signal | ALL | 0-25.5 Volts | 12.8-14.2 Volts |
| Injector PWM Bank 1 or Bank 2 | ENG, FT, HO2S, MF | 0-9 ms | 3.0-5.4 ms |
| Injector 1-8 Disabled Due To Misfire | MF | Yes/No | No |
| Int. CMP Angle Bank 1 or Bank 2 | CMP | Degrees | Varies |
| Int. CMP Bank 1 or Bank 2 Active Counter | CMP, IGN | Counts | Varies |
| Int. CMP Bank 1 or Bank 2 Command | CMP | % | Varies |
| Int. CMP Bank 1 or Bank 2 Variance | CMP | Degrees | Varies |
| Int. CMP Solenoid Bn 1 or Bn 2 Circuit Status | CMP | OK/Incomplete/Short B+/Short Gnd/Open | OK |
| Intake Manifold Pressure | ENG, FT, IND | kPa | Varies |
| Knock Detected Cyl.1-8 | IGN | YES/NO | NO |
| Knock Retard | IGN | 0-191 Degrees | 0 |
| Long Term FT Bank 1 or Bank. 2 | ENG, EVAP, FT, HO2S, | -100 to +100% | 7-9% |
| LT FT Test Avg. Bank 1 or Bank 2 | FT | % | 1% |
| LT FT Avg. Bank 1 or Bank 2 w/o purge | FT | % | 1% |
| Loop Status | ENG, EVAP, FT, HO2S | Open/Closed | Closed |
| MAF Performance Test | FT, TAC, IND | OK/Fault | OK |
| MAF Sensor | ALL | 0-655 g/s | 3-7 g/s |
| MAF Sensor | IND | 0-9999 Hz | 28 Hz |
| MAP Performance Test | FT, IND, TAC | OK/Fault | OK |
| MAP Performance Test 1 | FT, IND, TAC | OK/Fault | OK |
| MAP Performance Test 2 | FT, IND, TAC | OK/Fault | OK |
| MAP Sensor | ALL | kPa/psi | 30 kPa (4.6 psi) |
| MAP Sensor | IND | Volts | 1.06 |
| MIL Circuit Status | ENG | OK/Incomplete/Short B+/Short Gnd | OK/Incomplete |
| MIL Command | ENG | On/Off | Off |
| MIL Requested by DTC | ALL | Yes/No | No |
| Misfire Current Cyl. 1-8 | MF | 0-255 Counts | 0 |
| Misfire History Cyl. 1-8 | MF | 0-255 Counts | 0 |
| PNP Switch | ENG | Park/Neutral/In Gear | Park/Neutral |
| Power Enrichment | ENG, FT, HO2S, MF | Active/Inactive | Inactive |
| Reduced Engine Power | TAC | Active/Inactive | Inactive |
| SC Inlet Pressure Sensor | FT, IND | kPa/psi | Varies |
| SC Inlet Pressure Sensor | IND | Volts | Varies |
| SC Inlet Pressure | FT, IND | kPa/psi | Varies |
| SCB Solenoid Circuit Status | IND | OK/Incomplete/Short B+/Short Gnd/Open | OK |
| SBC Solenoid Command | ENG, IND | % | Varies |
| Short Term FT Bank 1 or Bank 2 | ENG, EVAP, FT, HO2S | -100 to +100% | -3% to +3% |
| Spark | ENG, FT, HO2S, IGN, IND, MF, | ° | - |
| Start Up ECT | EVAP, HO2S | -39 to +140°C/-38 to +284°F | Varies |
| Start Up IAT | EVAP, HO2S | -39 to +140°C/-38 to +284°F | Varies |
| ST FT Test Avg. Bank 1 or Bank 2 | FT | % | - |
| TAC Forced Engine Shutdown | TAC | YES/NO | NO |
| TAC Motor | TAC | Enabled/Disabled | Enabled |
| TAC Motor Command | TAC | % | - |
| TCS Torque Delivered Signal | TAC | % | 1 % |
| TCS Torque Request Signal | TAC | Nm | - |
| TCS Torque Request Signal | TAC | % | - |
| Torque Management Spark Retard | IGN | ° | 0 |
| Total Knock Retard | IGN | ° | 0 |
| Total Misfire | MF | 0-9999 | 0 |
| TP Desired Angle | TAC | % | 2 % |
| TP Indicated Angle | ALL | 0-99% | 2-3 % |
| TP Performance Test | IND, TAC, FT | OK/Fault | OK |
| TP Sensor 1 | TAC | 0-5 Volts | 0.5-0.8 Volts |
| TP Sensor 2 | TAC | 0-5 Volts | 4.1-4.5 Volts |
| TP Sensor 1 Indicated Position | TAC | % | 2 % |
| TP Sensor 2 Indicated Position | TAC | % | 2 % |
| TP Sensor 1 Learned Min | TAC | 0-5 Volts | Varies |
| TP Sensor 2 Learned Min | TAC | 5-0 Volts | Varies |
| TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
| Vehicle Speed Sensor | ALL | km/mi | 0 |
| Warm-ups Since DTC Cleared | ENG | Counts | 0 |
| Warm-ups w/o Emission Faults | ENG | Counts | 0 |
| Warm-ups w/o Non-emission Faults | ENG | Counts | 0 |
| Wide Open Throttle | TAC | YES/NO | NO |