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 given 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 is determined:
| • | The Diagnostic System Check - Vehicle is completed |
| • | No diagnostic trouble codes (DTCs) |
| • | On-board diagnostics are functioning properly. |
The 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 values that would be seen on a normally running engine.
Important: A scan tool that displays faulty data should not be used. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and 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 can be located on the scan tool. Refer to the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:
Eng: Engine dataEGR: Exhaust gas recirculation (EGR) data
EVAP: Evaporative emission (EVAP) data
FUEL TRIM: Fuel trim data
HO2S: Heated oxygen sensor (HO2S) data
Ignition: Ignition system data
Misfire: Misfire data
ODD: Output driver data
TAC Output: Throttle actuator control data
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off/Brake Pedal Released | |||||||||||||||||||||
24X Crank Sensor | Ignition | RPM | 0-6,400 | ||||||||||||||||||
A/C Relay Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
A/C Relay Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
A/C Relay Command | Eng, Misfire, EGR, TAC | On/Off | Off | ||||||||||||||||||
Air Fuel Ratio | Eng, Fuel Trim, HO2S | Ratio | 14.2:1-14.7:1 | ||||||||||||||||||
APP Indicated Angle | Eng, EGR, EVAP, HO2S, Ignition, Misfire, TAC, Fuel Trim | Percent | 0 | ||||||||||||||||||
APP Sensor 1 | TAC | Volts | Varies | ||||||||||||||||||
APP Sensor 1 Circuit | TAC | OK/Not OK | OK | ||||||||||||||||||
APP Sensor 2 | TAC | Volts | Varies | ||||||||||||||||||
APP Sensor 2 Circuit | TAC | OK/Not OK | OK | ||||||||||||||||||
APP Sensor 1 | TAC | Percent | Varies | ||||||||||||||||||
APP Sensor 2 | TAC | Percent | Varies | ||||||||||||||||||
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree | ||||||||||||||||||
BARO | Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition | kPa | 65-110 kPa | ||||||||||||||||||
Catalytic Converter Protection Active | Fuel Trim, HO2S | Yes/No | No | ||||||||||||||||||
CMP Sensor | Ignition | RPM | Varies | ||||||||||||||||||
CMP Sensor Signal Present | Ignition, Misfire | Yes/No | Yes | ||||||||||||||||||
Cruise Control Active | TAC | Yes/No | No | ||||||||||||||||||
Cycles of Misfire Data | Misfire | Counts | 0-99 | ||||||||||||||||||
Cyl. 1-6 Injector Circuit Status | ODD | OK/Stuck Low (open)/Stuck High | OK | ||||||||||||||||||
Cylinder 1 and 4 IC Circuit Status | ODD | OK/Not OK | OK | ||||||||||||||||||
Cylinder 2 and 5 IC Circuit Status | ODD | OK/Not OK | OK | ||||||||||||||||||
Cylinder 3 and 6 IC Circuit Status | ODD | OK/Not OK | OK | ||||||||||||||||||
Cylinder 1-6 Injector Circuit History | ODD | OK/Stuck Low (open)/Stuck High | OK | ||||||||||||||||||
Decel Fuel Cut-off | Eng, EGR, Fuel Trim, HO2S | Active/Inactive | Inactive | ||||||||||||||||||
Desired EGR Position | EGR, Misfire | Percent | 0 | ||||||||||||||||||
Desired Idle Speed | Eng, EVAP, TAC | RPM | Varies | ||||||||||||||||||
Driver Module 1 Status | ODD | Enabled/Off-High Volts/Off High Temp/Invalid State | Enabled | ||||||||||||||||||
Driver Module 2 Status | ODD | Enabled/Off-High Volts/Off High Temp/Invalid State | Enabled | ||||||||||||||||||
Driver Module 3 Status | ODD | Enabled/Off-High Volts/Off High Temp/Invalid State | Enabled | ||||||||||||||||||
EC Ignition Relay Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
EC Relay Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
ECT Sensor | Eng, EGR, EVAP, HO2S, Ignition, Misfire, Fuel Trim, TAC | °C/°F | Varies | ||||||||||||||||||
EGR Flow Test Count | EGR | Counts | 0-12 | ||||||||||||||||||
EGR Learned Minimum Position | EGR | Volts | 0.14-1.0 | ||||||||||||||||||
EGR Position Sensor | Eng, EGR, Misfire | Percent | Varies | ||||||||||||||||||
EGR Position Sensor | EGR | Volts | 0 | ||||||||||||||||||
EGR Position Variance | EGR | Percent | 0 | ||||||||||||||||||
EGR Solenoid Circuit History | ODD | OK/Open/Fault/Invalid State | OK | ||||||||||||||||||
EGR Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
EGR Solenoid Command | EGR | Percent | 0 | ||||||||||||||||||
Engine Load | Eng, Misfire, Fuel Trim, EVAP, EGR, HO2S, Ignition, TAC | Percent | 0 | ||||||||||||||||||
Engine Oil Pressure Switch | Eng | Low/OK | OK | ||||||||||||||||||
Engine Run Time | Eng, EVAP, Misfire, Fuel Trim, EGR, HO2S, Ignition, TAC, ODD | Hr: Min: Sec | Varies | ||||||||||||||||||
Engine Speed | Eng, EGR, EVAP, Ignition, Misfire, Fuel Trim, TAC | RPM | Varies | ||||||||||||||||||
EVAP Fault History | EVAP | No Fault/Excess Vacuum/Purge Valve Leak/Small Leak/Weak Vacuum/No Test Result | No Fault | ||||||||||||||||||
EVAP Purge Solenoid Circuit History | ODD | OK/Open/Short | OK | ||||||||||||||||||
EVAP Purge Solenoid Circuit Status | ODD | OK/Open/Short | OK | ||||||||||||||||||
EVAP Purge Solenoid Command | Eng, EVAP, Fuel Trim, HO2S | Percent | Varies | ||||||||||||||||||
EVAP Test Abort Reason | EVAP | No Aborted/Lost Enable/Small Leak/Veh. Not At Rest | Varies | ||||||||||||||||||
EVAP Test Result | EVAP |
| Varies | ||||||||||||||||||
EVAP Test State | EVAP | Waiting for Purge/Test Running/Test Completed | Varies | ||||||||||||||||||
EVAP Vent Solenoid Circuit History | ODD | OK/Open/Short | OK | ||||||||||||||||||
EVAP Vent Solenoid Circuit Status | ODD | OK/Open/Short | OK | ||||||||||||||||||
EVAP Vent Solenoid Command | Eng, EVAP | Venting/Not Venting | Varies | ||||||||||||||||||
FC Relay 1 Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
FC Relay 1 Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
FC Relay 2 and 3 Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
FC Relay 2 and 3 Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Fuel Level Sensor | EVAP | Volts | Varies | ||||||||||||||||||
Fuel Pump Relay Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Fuel Pump Relay Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Fuel Pump Relay Command | Eng | On/Off | On | ||||||||||||||||||
Fuel Tank Level Remaining | EVAP | Percent | 0-104 | ||||||||||||||||||
Fuel Tank Pressure Sensor | Eng, EVAP | mm Hg/in H2O | Varies | ||||||||||||||||||
Fuel Tank Pressure Sensor | EVAP | Volts | Varies | ||||||||||||||||||
Fuel Trim Cell | EVAP, Eng, Fuel Trim | 0-4 | 0 | ||||||||||||||||||
Fuel Trim Learn | Eng, EVAP, Fuel Trim | Enabled/Disabled | Varies | ||||||||||||||||||
HO2S Bank 1 Sensor 1 | EVAP, Eng, Fuel Trim, HO2S | millivolts | 0-1000 and Varying | ||||||||||||||||||
HO2S Bank 1 Sensor 1 Ready | Fuel Trim, HO2S | Yes/No | Yes | ||||||||||||||||||
HO2S Bank 1 Sensor 2 | Eng, Fuel Trim, HO2S | millivolts | 0-1000 and Varying | ||||||||||||||||||
HO2S Bank 2 Sensor 1 Ready | Fuel Trim, HO2S | Yes/No | Yes | ||||||||||||||||||
HO2S Bank 2 Sensor 1 | Eng, EVAP, Fuel Trim, HO2S | millivolts | 0-1000 and Varying | ||||||||||||||||||
HO2S Bank 2 Sensor 2 | Eng, Fuel Trim, HO2S | millivolts | 0-1000 and Varying | ||||||||||||||||||
HO2S Htr. Bn. 1 Sen. 1 | HO2S | On/Off | On | ||||||||||||||||||
HO2S Htr. Bank 1 Sensor 1 Command | HO2S | On/Off | On | ||||||||||||||||||
HO2S Htr. Bn. 1 Sen. 2 | HO2S | On/Off | On | ||||||||||||||||||
HO2S Htr. Bank 1 Sensor 2 Command | HO2S | On/Off | On | ||||||||||||||||||
HO2S Heater Bn. 1 Sen. 1 | HO2S | Amps | Varies | ||||||||||||||||||
HO2S Heater Bn. 1 Sen. 2 | HO2S | Amps | Varies | ||||||||||||||||||
HO2S Heater Bn. 2 Sen. 1 | HO2S | Amps | Varies | ||||||||||||||||||
HO2S Heater Bn. 2 Sen. 2 | HO2S | Amps | Varies | ||||||||||||||||||
HO2S Htr. Bn. 1 Sen. 1 Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 1 Sen. 2 Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 2 Sen. 1 | HO2S | On/Off | On | ||||||||||||||||||
HO2S Htr. Bn. 2 Sen. 1 Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 2 Sen. 2 | HO2S | On/Off | On | ||||||||||||||||||
HO2S Htr. Bn. 2 Sen. 2 Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 1 Sen. 1 Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 1 Sen. 2 Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 2 Sen. 1 Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
HO2S Htr. Bn. 2 Sen. 2 Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Hot Open Loop | Fuel Trim, HO2S | Active/Inactive | Inactive | ||||||||||||||||||
IAT Sensor | Eng, EVAP, EGR, Fuel Trim, HO2S, Ignition, Misfire, TAC | °C/°F | Varies | ||||||||||||||||||
Ignition 1 Signal | EVAP, Eng, EGR, Fuel Trim, HO2S, Ignition, Misfire, ODD, TAC | Volts | Varies | ||||||||||||||||||
Ignition Off Time | EVAP, Eng | Minutes/Varies | Varies | ||||||||||||||||||
Initial Brake Apply Signal | TAC | Released/Applied | Released | ||||||||||||||||||
Injector PWM | Fuel Trim, Misfire | milliseconds | Varies | ||||||||||||||||||
Knock Retard | EGR, Ignition | Degrees | 0 | ||||||||||||||||||
Long Term FT Bank 1 | Eng, EVAP, Fuel Trim, HO2S | Percent | -10% to +10% | ||||||||||||||||||
Long Term FT Bank 2 | Eng, EVAP, Fuel Trim, HO2S | Percent | -10% to +10% | ||||||||||||||||||
Loop Status | Eng, Fuel Trim, EVAP, HO2S | Open/Closed | Closed | ||||||||||||||||||
MAF Sensor | Eng, EGR, Misfire, EVAP, Fuel Trim, HO2S, Ignition, TAC | g/s | 3-6 (Varies with altitude) | ||||||||||||||||||
MAF Sensor | EVAP, Fuel Trim, HO2S, Misfire, TAC | Hz | 1,200-3,000 (depends on altitude) | ||||||||||||||||||
MAP Sensor | Eng, EGR, Fuel Trim, HO2S, Misfire, TAC | Volts | 0.4-2.0 Volts | ||||||||||||||||||
MAP Sensor | Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, EGR, TAC | kPa | 20-48 kPa (Varies with altitude) | ||||||||||||||||||
MIL Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
MIL Command | EVAP, Eng, EGR, Ignition | On/Off | Off | ||||||||||||||||||
MIL Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Mileage Since DTC Cleared | Eng | km/h/mph | Varies | ||||||||||||||||||
Misfire Current Cyl. 1-6 | Misfire | Counts | 0 | ||||||||||||||||||
Misfire History Cyl. 1-6 | Misfire | Counts | 0 | ||||||||||||||||||
Moderate Brake Apply Signal | TAC | Applied/Released | Released | ||||||||||||||||||
Number of DTCs | Eng EVAP, Fuel Trim, TAC | Number | 0 | ||||||||||||||||||
PCM Reset | Eng | Yes/No | No | ||||||||||||||||||
Power Enrichment | Eng, Fuel Trim, HO2S, Misfire | Active/Inactive | Inactive | ||||||||||||||||||
Reduced Engine Power | TAC | Active/Inactive | Inactive | ||||||||||||||||||
Short Term FT Bank 1 | Eng, EVAP, Fuel Trim, HO2S, | Percent | -10 to +10 | ||||||||||||||||||
Short Term FT Bank 2 | Eng, EVAP, Fuel Trim, HO2S, | Percent | -10 to +10 | ||||||||||||||||||
Spark | Eng, Misfire, Fuel Trim, HO2S, Ignition | Degrees | 22 (varies) | ||||||||||||||||||
Start Up ECT | EVAP, Fuel Trim, HO2S | °C/°F | Varies | ||||||||||||||||||
Start Up IAT | EVAP, Fuel Trim, HO2S | °C/°F | Varies | ||||||||||||||||||
Starter Relay Circuit Status | ODD | OK/Fault | OK | ||||||||||||||||||
Starter Relay Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Stop Lamp Pedal Switch | Eng, TAC | Released/Applied | Released | ||||||||||||||||||
TAC/PCM Communications Signal | TAC | OK/Fault | OK | ||||||||||||||||||
TAC Stop Lamp Pedal Switch | Eng | Released/Applied | Released | ||||||||||||||||||
TAC Stop Lamp Pedal Switch | TAC | Applied/Released | Released | ||||||||||||||||||
TAC Vehicle Speed Signal | TAC | OK/Fault | OK | ||||||||||||||||||
TCS Delivered Torque Circuit Status | ODD | OK/Fault | OK | ||||||||||||||||||
Torque Request Signal | TAC | Percent | 100% | ||||||||||||||||||
Torque Delivered Signal | TAC | Percent | 75% | ||||||||||||||||||
Total Misfire Count | Misfire | 1-255 | 0 | ||||||||||||||||||
TP Desired Angle | TAC | Percent | Varies | ||||||||||||||||||
TP Indicated Angle | Eng, EGR, Fuel Trim, HO2S, Ignition, EVAP, Misfire, TAC | Percent | % | ||||||||||||||||||
TP Sensor 1 | TAC | Percent | Varies | ||||||||||||||||||
TP Sensor 1 | TAC | Volts | Varies | ||||||||||||||||||
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree | ||||||||||||||||||
TP Sensor 1 | TAC | OK/Not OK | OK | ||||||||||||||||||
TP Sensor 2 | TAC | Percent | Varies | ||||||||||||||||||
TP Sensor 2 | TAC | Volts | Varies | ||||||||||||||||||
TP Sensor 2 | TAC | OK/Not OK | OK | ||||||||||||||||||
Traction Control Status | TAC | Active/Inactive | Inactive | ||||||||||||||||||
Vehicle Speed Circuit History | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Vehicle Speed Circuit Status | ODD | OK/Fault/Invalid State | OK | ||||||||||||||||||
Vehicle Speed Sensor | Eng, EGR, EVAP, HO2S, Ignition, Fuel Trim, Misfire, TAC | mph/km/h | 0 | ||||||||||||||||||
Warm-ups w/o Emission Faults | Eng | 1-10 | 0 | ||||||||||||||||||
Warm-ups w/o Non-Emission Faults | Eng | 1-10 | 0 | ||||||||||||||||||
