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
2001 Chevrolet Cavalier LS, 2.4 TSECTION Scan Tool Data List
WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
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
- CC
-
Cruise Control Data
- EE
-
Enhanced EVAP Data
- FT
-
Fuel Trim Data List
- HO2S
-
HO2S Data List
- MF
-
Misfire Data List
- TAC
-
TAC Data List
Scan Tool Data List
| Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
| Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off | |||
| A/C Clutch Feedback Signal | Eng 2 | On/Off | Off |
| A/C High Side Pressure Sensor | Eng 2 | kPa/psi | 680 kPa/98 psi |
| A/C High Side Pressure Sensor | Eng 2 | Volts | 1.2-1.3 |
| A/C Relay Command | Eng 1, Eng 2, Eng 3, MF | On/Off | Off |
| A/C Request Signal | Eng 2 | Yes/No | No |
| Air Fuel Ratio | ENG 3, Eng 2 | Ratio | 14.7:1 |
| AIR Pump Relay Command | Eng 1, FT | On/Off | Off |
| AIR Solenoid Command | Eng 1, FT | On/Off | Off |
| APP Average | TAC | Counts | 0 |
| APP Indicated Angle | ENG 1, Eng 2, EE, FT, CC, TAC, HO2S | 0-100% | 0 |
| APP Sensor 1 | TAC | Volts | 0.25-1.1V |
| APP Sensor 2 | TAC | Volts | 3.9-4.8 |
| APP Sensor 3 | TAC | Volts | 3.2-4.5 |
| APP Sensor 1 | TAC | 0-100% | 0% |
| APP Sensor 2 | TAC | 0-100% | 0% |
| APP Sensor 3 | TAC | 0-100% | 0% |
| APP Sensor 1 and 2 | TAC | Agree/Disagree | agree |
| APP Sensor 1 and 3 | TAC | Agree/Disagree | agree |
| APP Sensor 2 and 3 | TAC | Agree/Disagree | agree |
| BARO | Eng 1, FT, EE | kPa/Volts | 65-104 kPa/3.5-4.9V (Varies w/Altitude) |
| CMP Sensor High to Low | Eng 2 | Counts | cycles |
| CMP Sensor Low to High | Eng 2 | Counts | cycles |
| Clutch Pedal Switch | CC, Eng 1 | Applied/Released | Released |
| Cold Start Up | EE | Yes/No | Varies |
| Column Lock Fuel Disable-ABS DTC | Eng 3 | Yes/No | No |
| Column Lock Fuel Disable-BCM DTC | Eng 3 | Yes/No | No |
| Column Lock PCM-BCM Com. | Eng 3 | Fault/OK | OK |
| Cruise Control Active | Eng 1, Eng 2, Eng 3, TAC, CC | Yes/No | No |
| Cruise Disengage History 1-8 | CC | Go to Diagnostic System Check - Cruise Control in Cruise Control | Varies |
| Cruise ON/OFF Switch | CC, TAC | On/Off | Off |
| Cruise Resume/Accel | TAC, CC | On/Off | Off |
| Cruise Set/Coast | TAC, CC | On/Off | Off |
| Current Gear | Eng 1, Eng 2, FT | 1-4 | 1 |
| Cycles Of Misfire Data | MF | Counts | cycles |
| Decel Fuel Cutoff | HO2S | ON/OFF | OFF |
| Desired Idle Speed | Eng 1, Eng 2, Eng 3, EE, TAC | RPM | PCM Controlled |
| DTC Set This Ignition | Eng 1, Eng 2, EE, FT, CC, HO2S | Yes/No | No |
| ECT Sensor | Eng 1, Eng 2, Eng 3, EE, FT, MF, HO2S | -39° to 140°C (-38° to 284°F) | 90° to 110°C (194° to 230°F) |
| Engine Load | All | 0-100% | 2% at Idle 9% at 2500 RPM |
| Engine Oil Level Switch | Eng 2, Eng 3 | OK/Not OK | OK |
| Engine Oil Life Remaining | Eng 3 | 0-100% | Varies |
| Engine Oil Pressure Sensor | Eng 3 | kPa/psi/Volts | Varies |
| Engine Run Time | ALL | Hrs, Min, Sec | Varies |
| Engine Speed | All | 0-10,000 RPM | Varies |
| EVAP Purge Solenoid Command | Eng 1, EE, FT | 0-100% | 20 |
| EVAP Vent Solenoid Command | Eng 1, EE, FT | Venting/Not Venting | Venting |
| Extended Travel Brake Pedal Switch | Eng 1, Eng 2, Eng 3 | Applied/Released | Released |
| FC Relay 1 Command | Eng 2, Eng 3 | On/Off | Depends on engine temperature and A/C Pressure |
| FC Relay 2 and 3 Command | Eng 2, Eng 3 | On/Off | Depends on engine temperature and A/C Pressure |
| Fuel Level Sensor Left Tank | EE | 5-0V | 0.7-2.5 Volts |
| Fuel Level Sensor Right Tank | EE | 5-0V | 0.7-2.5 Volts |
| Fuel Tank Level Remaining | FT, EE | 0-19 gal./0-73L | Varies |
| Fuel Tank Level Remaining | EE | 0-100% | Varies |
| Fuel Tank Pressure Sensor | Eng 1, EE | -32.7 to 14.0 mm/Hg -17.5 to 7.5 in/H2O |
Varies |
| Fuel Tank Pressure Sensor | EE | 0-5 Volts | Varies |
| Fuel Tank Rated Capacity | EE | 73L (19 gal.) | 73L (19 gal.) |
| Fuel Trim Cell | Eng 1, FT, EE | 0-23 | Varies |
| Fuel Trim Learn | Eng 1, EE, FT | Enabled/Disabled | Enabled (may Toggle) |
| Gen F-Terminal Signal | Eng 2 | 0-100% | Varies |
| Gen L-Terminal Signal | Eng 2 | Voltage/No Voltage | Voltage |
| HO2S Bank 1 Sensor 1 | Eng 1, FT, EE, HO2S | Millivolts | 10-1,000 mV and Varying |
| HO2S Bank 1 Sensor 2 | Eng 1, FT, HO2S | Millivolts | 10-1,000 mV and Varying |
| HO2S Bank 2 Sensor 1 | Eng 1, FT, EE, HO2S | Millivolts | 10-1,000 mV and Varying |
| HO2S Bank 2 Sensor 2 | Eng 1, FT, HO2S | Millivolts | 10-1,000 mV and Varying |
| HO2S Heater Bank 1 Sensor 1 | HO2S | Amps | 0.65-0.85 |
| HO2S Heater Bank 1 Sensor 2 | HO2S | Amps | 0.43-0.59 |
| HO2S Heater Bank 2 Sensor 1 | HO2S | Amps | 0.65-0.85 |
| HO2S Heater Bank 2 Sensor 2 | HO2S | Amps | 0.43-0.59 |
| IAT Sensor | Eng 1, Eng 2, Eng 3, EE, FT | -39° to 140°C (-38° to 284°F) | Varies |
| Ignition 1 Signal | Eng 1, Eng 2, Eng 3, EE, CC, FT, TAC | 0-25 Volts | 11.5-14.5 |
| Inj. PWM Bank 1 Average | Eng 2, FF, FT, MF | Milliseconds | 1-4 |
| Inj. PWM Bank 2 Average | Eng 2, FT, FF, MF | Milliseconds | 1-4 |
| Knock Retard | Eng 1 | 0°-16° | 0 |
| Long Term FT Avg. Bn 1 | FT | Percentage | Near 0 % |
| Long Term FT Avg. Bn 2 | FT | Percentage | Near 0 % |
| Long Term FT Bank 1 | Eng 1, Eng 2, Eng 3, EE, FT, HO2S | Percentage | Near 0 % |
| Long Term FT Bank 2 | Eng 1, Eng 2, Eng 3, EE, FT, HO2S | Percentage | Near 0 % |
| Loop Status | Eng 1, Eng 2, Eng 3, EE, FT, HO2S | Open/Closed | Closed |
| MAF Sensor | Eng 1, Eng 2, Eng 3, EE, FT, MF, TAC, HO2S | Grams Per Second (g/s) | 5-9 at Idle (depends on altitude) |
| MAF Sensor | Eng 3 | Hz | 2800-2900 |
| MAP Sensor | Eng 1, Eng 2, Eng 3, EE, FT, MF, TAC, HO2S | kPa | 20-48 kPa |
| MAP Sensor | Eng 1, Eng 2, Eng 3 | Volts | 1.0-2.0 V (varies w/altitude) |
| MIL Command | Eng 1 | Off/On | Off |
| Mileage Since DTC Cleared | Eng 3 | km/Miles | Varies |
| Misfire Current 1-8 | MF | 0-200 | 0 |
| Misfire History 1-8 | MF | 0-65,535 | 0 |
| PCM Reset | Eng 1, EE, FT | Yes/No | No |
| PCM/VCM in VTD Fail Enable | Eng 3 | Yes/No | No |
| Power Enrichment | Eng 2, FT, HO2S | Active/Inactive | Inactive |
| Powertrain Induced Chassis Pitch | Eng 3 | Active/Inactive | Inactive |
| Reduced Engine Power | Eng 1, Eng 3, TAC, CC | Active/Inactive | Inactive |
| Reverse Inhibit Solenoid | Eng 1 | On/Off | No |
| Short Term FT Avg. Bn 1 | FT | Percentage | Near 0 % |
| Short Term FT Avg. Bn 2 | FT | Percentage | Near 0 % |
| Short Term FT Bank 1 | Eng 1, Eng 2, Eng 3, EE, FT, HO2S | Percentage | Near 0 % |
| Short Term FT Bank 2 | Eng 1, Eng 2, Eng 3, EE, FT, HO2S | Percentage | Near 0 % |
| Skip Shift Lamp Command | Eng 1 | On/Off | Off |
| Skip Shift Solenoid Command | Eng 1 | No Skip/Skip | No Skip |
| Spark | Eng 1, Eng 2, Eng 3, FT, MF, HO2S | Degrees | 16-19 |
| Start Up ECT | Eng 2, EE, FT | C°/F° | Varies |
| Stoplamp Pedal Switch | Eng 1, Eng 2, Eng 3, TAC, CC | Applied/Released | Released |
| TAC/PCM Communication Signal | TAC, CC | OK/Fault | OK |
| TCC/Cruise Brake Pedal Switch | TAC, Eng 1, Eng 2, Eng 3, CC | Applied/Released | Released |
| TCC Enable Solenoid Command | Eng 1, Eng 2, MF, CC | Enabled/Disabled | Disabled |
| TFP Sw. | Eng 2, Eng 3, CC, FT | Park/Neutral, Reverse, Drive 4, Drive 3, Drive 2, Drive 1, Invalid | Park/Neutral |
| Torque Delivered Signal | ENG 2, TAC, | N.m/lb.ft. | 16-20 Nm / 11-14 lb.ft. |
| Torque Request Signal | ENG 2, TAC | N.m/Ft-Lbs | 473 Nm / 349 lb.ft |
| TP Desired Angle | Eng 1, Eng 2, EE, TAC, CC | Percentage | 3-10 % |
| TP Indicated Angle | All | Percentage | 3-9% |
| TP Sensor 1 | TAC | Percentage | 3-10 |
| TP Sensor 1 | TAC | Volts | 0.25-1.5 V |
| TP Sensor 2 | TAC | Percentage | 3-10 |
| TP Sensor 2 | TAC | Volts | 4.0-1.5 V |
| TP Sensors 1 and 2 | TAC | Agree/Disagree | agree |
| Traction Control Signal | CC | Active/Inactive | Inactive |
| Traction Control Status | Eng 2, TAC | Active/Inactive | Inactive |
| Tr Sw. | FT, Eng 2, Eng 3, CC | Transaxle Gear Position | Park/Neutral |
| Vehicle Speed Sensor | ALL | km/h/mph | 0 km/h (0 mph) |
| VTD Auto Learn Timer | Eng 3 | Active/Inactive | Inactive |
| VTD Fuel Disable | Eng 3 | Active/Inactive | Inactive |
| VTD Fuel Disable Until Ign. Off | Eng 3 | Yes/No | No |
| Warm-Ups w/o Emis. Faults | Eng 3 | Counts | 0-255 |
| Warm-Ups w/o Non-Emis. Faults | Eng 3 | Counts | 0-255 |
RENDER: 1.0x
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.