For 1990-2009 cars

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. 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 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. 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: Engine Data
EVAP: EVAP Data
FT: Fuel Trim Data
HO2S: Heated Oxygen Sensors
Ign: Ignition Data
MF: Misfire Data
TAC: TAC Data
CMP: CMP Actuator Data
IND: Intake Data
Trans: Transmission Data

#### Scan Tool Data List

Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values
--- | --- | --- | ---
Conditions for Operating: Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
A/C Relay Command | Eng, MF, TAC, IND | On/Off | Off
APP Indicated Angle | All | 0-100% | 0%
APP Sensor 1 | TAC | 0.9-4.5 V | 1V
APP Sensor 2 | TAC | 0.40-2.25 V | 0.4V
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree
Barometric Pressure (BARO) | Eng, Ign, EVAP, HO2S, FT, IND, TRANS | 65-104 kPa (8-16 psi) | Varies with altitude
Barometric Pressure (BARO) | IND | Volts | Varies
Brake Pedal Signal Status | Eng, TAC, TRANS | Valid/Invalid | Valid
Calculated TWC Temperature Bank 1 and 2 | FT, MF | Temperature | Varies
Catalytic Converter Protection Active | FT, HO2S | Yes/No | No
CKP Resync Counter | Ign | Counts | 0 Counts
Commanded Air/Fuel Ratio and Equivalence Ratio | ENG, FT, HO2S, IND | Ratio | 14.7:1
Cruise Control Active | Eng, TAC | Yes/No | No
Cycles of Misfire Data | MF | 0-200 Counts | Varies
Cylinder 1-6 IC Circuit Status | MF | OK/Fault/Indeterminate | OK
Cylinder 1-6 Injector Circuit Status | MF | OK/Fault/Indeterminate | OK
Cylinder 1-6 Knock Retard | IGN | Degrees | 0 Degrees
Decel Fuel Cutoff | Eng, FT, HO2S | Active/Inactive | Inactive
Desired Exhaust CMP - Bank 1 or 2 | CMP | Degrees | Varies
Desired HO2S Bank 1 or 2 Sensor 1 | HO2S, FT | Lambda | Varies
Desired Idle Speed | Eng, EVAP, TAC, CMP, IND | 0-7,000 RPM | 650 RPM
Desired Intake CMP - Bank 1 or 2 | CMP | Degrees | Varies
DTC Set This Ignition | Eng | Yes/No | No
EC Ignition Relay Circuit | TAC | OK/Fault/Indeterminate | OK
EC Ignition Relay Command | Eng, TAC | On/Off | On
EC Ignition Relay Feedback Signal | Eng, TAC | 0-25.5 V | 12.0-14.5 V
ECM Reset | Eng, EVAP | Yes/No | No
ECT Sensor | All | -39°C to +140°C (-38°F to +284°F) | Varies
Engine Load | All | 0-99% | 0-5% - Idle 3-7% - 2500 RPM
Engine OFF, EVAP Test Conditions Met | EVAP | Yes/No | Varies
Engine Off Time | EVAP | 0:00:00 | Varies
Engine Oil Level Switch | ENG, CMP | OK/Low | OK
Engine Oil Life Remaining | CMP | % | Varies
Engine Oil Pressure Sensor | MF, CMP | kPa/psi | Varies
Engine Run Time | ALL | 0:00:00 | Varies
Engine Speed | ALL | RPM | 575-700 RPM
EVAP Purge Solenoid Circuit Status | EVAP | OK/Fault/Indeterminate | OK
EVAP Purge Solenoid Command | Eng, EVAP, FT, HO2S | 0-100% | Varies
EVAP Vent Solenoid Circuit Status | EVAP | OK/Fault/Indeterminate | OK
EVAP Vent Solenoid Command | Eng, EVAP | Venting/Not Venting | Venting
Exh. CMP Angle - Bank 1 or 2 | CMP | Degrees | Varies
Exh. CMP Angle - Bank 1 or 2 | CMP | Degrees | Varies
Exh. CMP Command - Bank 1 or 2 | CMP | 0-99% | Varies
Exh. CMP Solenoid - Bank 1 or 2 Circuit Status | CMP | OK/Fault/Indeterminate | OK
Fuel Level | ENG, EVAP, FT, MF | 0-100% | Varies
Fuel Level Sensor Left Tank (Secondary) | EVAP | 0-5 V | Varies
Fuel Level Sensor Right Tank (Primary) | EVAP | 0-5 V | Varies
Fuel Pump Relay Circuit Status | ENG | OK/Fault/Indeterminate | OK
Fuel Pump Relay Command | Eng | On/Off | On
Fuel Tank Level Remaining | Eng, EVAP, FT, MF | L/gal | Varies
Fuel Tank Pressure Sensor | ENG, EVAP | in H2O/mm Hg | Varies
Fuel Tank Pressure Sensor | EVAP | 0-5 V | Varies
Fuel Tank Rated Capacity | EVAP | L/gal | 17.8 gal (67.3 L)
Fuel Trim Learn | FT | Enabled/Disabled | Enabled
HO2S - Bank 1 or 2 Sensor 1 | Eng, EVAP, FT, HO2S, IND | Lambda | 1.0 Lambda
HO2S - Bank 1 or 2 Sensor 2 | Eng, FT, HO2S | 0-1,006 mV | Varies 400-700 mV
HO2S Heater Bank 1 or 2 Sensor 1 or 2 Circuit Status | HO2S | OK/Fault/Indeterminate | OK
HO2S Heater Bank 1 or 2 Sensor 1 Command | HO2S | 0-99% | Varies
Heated Oxygen Sensor (HO2S) Sensing Element (Bank 1 or 2 Sensor 1) | HO2S | Ohms | 70-90 Ohms Depends on Temperature
Heated Oxygen Sensor (HO2S) Sensing Element (Bank 1 or 2 Sensor 2) | HO2S | Ohms | 20-300 Ohms Depends on Temperature
Heated Oxygen Sensor (HO2S) Module Signal (Bank 1 or 2 Sensor 1) | ENG, HO2S | 1-5 V | Varies
IAT Sensor | ALL | -39° to +140°C (-38° to +284°F) | Varies
Ignition 0 Signal | Eng, TAC | On/Off | On
Ignition 1 Signal | Eng, IGN, EVAP, FT, HO2S, MF, TAC, IND, TRANS | Volts | Varies
Ignition 1 Signal | ENG, CMP, EVAP | On/Off | On
Spark Advance | IND | Degrees | 0 Degrees
Intake Manifold Runner Control (IMRC) Solenoid Circuit Status | IND | OK/Fault/Indeterminate | OK
Intake Manifold Runner Control (IMRC) Solenoid Command | IND | On/Off | Off
Initial Brake Apply Signal | ENG, TAC, TRANS | Applied/Released | Released
Injector 1-6 Command | FT, MF | ms | Varies
IAT Camshaft Position (CMP) Angle - Bank 1 or 2 | CMP | Degrees | Varies
Int. Camshaft Position (CMP) Angle - Bank 1 or 2 | CMP | Degrees | Varies
IAT Camshaft Position (CMP) Command - Bank 1 or 2 | CMP | 0-99% | Varies
IAT Camshaft Position Solenoid - Solenoid Bank 1 or 2 Circuit Status | CMP | OK/Fault/Indeterminate | OK
Knock Retard | IGN | Degrees | Varies
KS 1 or 2 Signal | IGN | Volts | Varies
Loop Status - Bank 1 or 2 Sensor 1 | Eng, EVAP, FT, HO2S | Open Loop/Closed Loop | Closed Loop
Loop Status - Bank 1 or 2 Sensor 2 | Eng, EVAP, FT, HO2S | Open Loop/Closed Loop | Open Loop
LT FT Bank 1 or Bank 2 Cruise/Accel | Eng, EVAP, FT, HO2S | -100% to +100% | 0%
LT FT Bank 1 or Bank 2 Idle/Decel | Eng, EVAP, FT, HO2S | -100% to +100% | 0%
MAF Sensor | Eng, IGN, CMP, FT, HO2S, MF, TAC, IND, TRANS | 0-655 g/s | 3.4-6.3 g/s
MAF Sensor | IND, EVAP | 0-5 V | 0.9-1.7 V
Malfunction Indicator Lamp (MIL) Circuit Status | ENG | OK/Fault/Indeterminate | OK
MIL Command | ENG | On/Off | Off
MIL Requested by DTC | Eng, IGN, EVAP, FT, HO2S, MF, CMP, IND, TRANS | Yes/No | No
Mileage Since DTC Cleared | Eng | km/miles | Varies
Misfire Current Cyl. 1-6 | MF | 0-255 Counts | 0
Misfire History Cyl. 1-6 | MF | 0-65,535 Counts | 0
Moderate Brake Apply Signal | TAC | Applied/Released | Released
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
Short Term FT - Bank 1 or Bank 2 | Eng, EVAP, FT, HO2S | -25% to +25% | -3% to +3%
Spark | Eng, IGN, FT, HO2S, MF | -20 to +40 Degrees | 2-10 Degrees
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
Stoplamp Pedal Switch | TAC | Applied/Released | Released
System Power Mode | ENG, EVAP, TAC | Disconnect, Accessory, Retained Accessory Power, Run, Crank Request | Run
Throttle Actuator Control (TAC) Circuit Status | TAC | OK/Fault/Indeterminate | OK
Throttle Actuator Control (TAC) Learned Counts | TAC | 0-11 Counts | 0
Torque Converter Clutch (TCC) Status | MF | Applied/Released | Released
Transmission Control Module (TCM) Requested Torque | TAC, Trans | N·m/lb ft | Varies
Transmission Control Module (TCM) Torque Increase | TAC, Trans | Yes/No | Varies
Traction Control System (TCS) Torque Increase | TAC | Yes/No | Varies
Traction Control System (TCS) Torque Reduction Active | TAC, Trans | Yes/No | Varies
Transmission Control Module (TCM) Torque Reduction Active | TAC, Trans | Yes/No | Varies
Torque Delivered Signal | TAC | 0-100% | Varies
Torque Request Signal | TAC, Trans | 0-100% | 90-98%
Total Fuel Trim Avg. - Bank 1 or Bank 2 | EVAP, FT, HO2S | -100 to +100% | Varies
Total Misfire Count | MF | Counts | 0
TP Desired Angle | TAC | 0-100% | Varies
Throttle Position Indicated Angle | ALL | 0-100% | Varies
Throttle Position (TP) Sensor 1 | TAC | 0-5 V | 0.5-0.8 V
TP Sensor 1 Learned Minimum | TAC | 0-5 V | 0-0.6 V
Throttle Position (TP) Sensor 2 | TAC | 0-5 V | 4.7-4.1 V
TP Sensor 2 Learned Minimum | TAC | 0-5 V | 5-3.7 V
Throttle Position (TP) Sensor 1 and 2 | TAC | Agree/Disagree | Agree
Traction Control Status | TAC | Active/Inactive | Inactive
Vehicle Speed Sensor | ALL | km/h mph | Varies
Volumetric Efficiency | ENG, IGN, EVAP, FT, HO2S, MF, TAC, CMP, TRANS | 0-100% | 5-25% - Idle and at 2,500 RPM
Warm-ups Since DTC Cleared | ENG | Counts | 0