For 1990-2009 cars

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 DTCs.

• | The on-board diagnostics are functioning correctly.

Scan tool values from an engine that is operating correctly 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 operating 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 may result in misdiagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service information for use in 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
Eng 2: Engine Data 2
CC: Cruise Control Data
ET: Electrical/Theft Data
EVAP: EVAP Data
HO2S: HO2S Data
Ign: Ignition Data
Ind: Induction Data
MF: Misfire Data
TAC: Throttle Actuated Control Data
FF: Freeze Frame Data
FR: Failure Records Data

Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values
--- | --- | --- | ---
Operting Conditions: Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
A/C High Side Pressure | Eng 2 | Volts | Varies
Actual EGR Position | Eng 1, Ind | % | Varies
Ambient Air Temperature | Eng 1, HO2S, Ind | Temperature | Varies
APP Sensor 1 and Sensor 2 | TAC | Volts | Varies
APP Sensors | TAC | % | Varies
BARO | Eng 1, Eng 2, HO2S, Ind, MF | 65-104 kPa | Varies with altitude
Change Engine Oil Indicator Command | Eng 2 | On, Off | Off
Crank Request Signal | ET | Yes/No | No
Cruise Active | CC | On/Off | Off
Cruise Cancel Switch | CC | Active/Inactive | Inactive
Cruise Control Switch | CC | Normal/Failed | Normal
Cruise On/Off Switch | CC | On/Off | Off
Cruise Release Brake Pedal Switch | CC | Normal/Failed | Normal
Cruise Resume/Accel Switch | CC | On/Off | Off
Cruise Set/Accel Switch | CC | On/Off | Off
Cruise Resume/Accel. Switch | CC | Active/Inactive | Inactive
Cruise Set/Coast Switch | CC | Active/Inactive | Inactive
Decel. Fuel Cut Off | Eng 2, EVAP | Active/Inactive | Inactive
Desired EGR Position | EGR | % | Varies
Desired Idle Speed | Eng 1, Eng 2, CC, EVAP, TAC | 0-7,000 RPM | 800-950 RPM
Desired Torque ABS/TCS | Eng 2, CC | % | Varies
Distance Since DTC Cleared | Eng 2 | km - miles | Varies
ECT Sensor | Eng 1, EVAP, HO2S, Ind, TAC, FF, FR | °C (°F) | Varies
EGR Closed Pintle Position | Ind | % | Varies
EGR Duty Cycle | Ind | % | Varies
EGR Feedback | Eng 1, Ind | Volts | Varies
EGR Flow Test Count | Ind | % | Varies
Engine Load | Eng 1, HO2S, Ign, Ind, MF, FF, FR | 0-99% | 25-40% - Idle 25-40% - 2500 RPM
Engine Oil Level Switch | Eng 2 | Low/OK | OK
Engine Oil Pressure Sensor | Eng 2 | Low/OK | OK
Engine Oil Temperature | Eng 1 | Temperature | Varies
Engine Run Time | Eng 1, FF, FR | 0:00:00 | Varies
Engine Speed | All | RPM | 750-950 RPM
EVAP Duty Cycle | EVAP | 0-100% | Varies
Fan Relay 1 and Relay 2 | Eng 2 | On, Off | Off
Fuel Level | EVAP | % | Varies
Fuel Level Sensor Left Tank | EVAP | Volts | Varies
Fuel Level Sensor Right Tank | EVAP | Volts | Varies
Fuel Pump | Eng 2, EVAP | On/Off | On
Fuel Tank Level Remaining | EVAP | Liters | Varies
Fuel Tank Pressure Sensor (If Equipped) | EVAP | 0-5 Volts | Varies
Fuel Trim Learn | HO2S, Ind | Enabled/Disabled | Enabled
HO2S Sensor 1 and Sensor 2 | HO2S, FF, FR | mV | Varies
HO2S Heater Sensor 1 and Sensor 2 | HO2S | % | Varies
HO2S Heater Sensor 1 and Sensor 2 | HO2S | On/Off | Off
IAT Sensor | Eng 1, EVAP, FT, HO2S, Ind, TAC, FF, FR | -39 to +140°C (-38 to +284°F) | Varies
Ignition 1 | ET, Ign | Volts | 12.0-14.5 Volts
Ignition Accessory Relay | ET | On/Off | Off
Injector PWM Bank 1 | Ign, MF | 0-9 ms | 4.6-5.4 ms
Knock Detected Cyl. 1-4 | Ign, MF | Yes/No | No
Knock Retard | Eng 2, Ign, MF | Degrees | Varies
Long Term FT | Eng 1, HO2S, FT, FF, FR | -100 to +100% | 0%
Long Term FT | Ind | Counts | Varies
Low Engine Oil Level Indicator Command | Eng 2 | On/Off | Off
Low Fuel Lamp Command (If Equipped) | IPC | On/Off | Off
Low Oil Pressure Warning | Eng 2 | On/Off | Off
MAF Sensor | Eng 1, EVAP, HO2S, Ign, Ind, MF | g/s | Varies
Main Relay | ET | On/Off | On
MAP Sensor | Eng 1, Eng 2, Ign | kPa | 38-50 kPa Varies with Altitude
MAP Sensor | Eng 1, Eng 2, HO2S, Ind, MF | 0-5 Volts | 0.9-1.7 Volts
Mileage at First Failure | Eng 1 | km - miles | Varies
Misfire Current Cyl. 1-4 | MF | Yes/No | No
Purge Learned Memory B1 | EVAP | TBD | TBD
Reduced Engine Power | Eng 1 | Active/Inactive | Inactive
Short Term FT | Ind | Counts | Varies
Short Term FT | Eng 1, HO2S, FF, FR | -25 to +25% | -3 to +3%
Spark | Eng 2, Ign, MF, FF, FR | -20 to +40 Degrees | 2-10 Degrees
Start Up ECT | Eng 1, EVAP, HO2S, Ind, TAC | -39 to +140°C (-38 to +284°F) | Varies
Starter Relay Status | ET | On/Off | Off
Torque Delivered | Eng 2, CC | % | Varies
Total Knock Retard | Eng 2, Ign, MF | Degrees | Varies
Total Misfire Current Count | MF | Counts | 0
TP Angle | FF, FR | % | Varies
TP Indicated Angle | Eng 1, CC, HO2S, Ind, TAC | % | Varies
TP Sensor 1 and Sensor 2 | Eng 1, Ind, TAC | volts | Varies
Vehicle Speed Sensor | Eng 1, CC, Ign, Ind, MF, TAC, FF, FR | km/h mph | 0 km/h (0 mph)