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 DTCs |
| • | 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 values that would be seen on a normal running engine.
Important: A scan tool that displays faulty data should not be used. The scan tool problem 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:
All: The Parameter is in all of the data lists indicated below.CC: Cruise Control
ED: Engine Data
ET: Electrical/Theft Data
EVAP: EVAP Data
FT: Fuel Trim Data List
HVAC: Heating, Ventilation, Air Condition
IND: Induction Data
IPC: Instrument Panel Control
MF: Misfire Data List
TAC: Throttle Actuated Control Data List
HO2S: HO2S Data
ID: Ignition Data
Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
Operating Conditions: Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories OFF | |||
AC OFF for WOT | HVAC | Yes/No | No |
AC Pressure Disable | HVAC | Yes/No | No |
A/C Relay Command | IND, ED, MF, HVAC | On/Off | Off |
A/C Request | MF, HVAC | Yes/No | No |
Air Fuel Ratio | ED, FT, HO2S, IND | Ratio | 14.7:1 |
APP Indicated Angle | ED, EVAP, FT, HO2S, CC, ID, MF, TAC, IND | 0-97% | 0% |
APP Sensor 1 | TAC | Volts | 1.02 Volts |
APP Sensor 1 | TAC | 0-99% | 0% |
APP Sensor 2 | TAC | Volts | 4.04 Volts |
APP Sensor 2 | TAC | 0-99% | 0% |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
APP Sensor 1 Circuit Status | TAC | OK/Fault | OK |
APP Sensor 2 Circuit Status | TAC | OK/Fault | OK |
BARO | IND | Volts | Varies with Altitude |
BARO | ED, EVAP, FT, HO2S, ID, IND | kPa | 65-104 kPa/ Varies w/Altitude |
Boost Duty Cycle | IND | 0-99% | 99% |
Catalytic Converter Protection Active | FT, HO2S | Yes/No | No |
CKP Active Counter | ID | 1-250 | 9-250 |
CMP Active Counter | ID | Counts | Varies |
CMP Sensor | ED, ID, MF | RPM | 500-700 |
Cold Start Up | ED, EVAP | Yes/No | Varies |
Crank Request Signal | ET | Yes/No | No |
Cruise Control Active | TAC, IPC, CC | Yes/No | No |
Cruise Disengage 1 History | CC | Various messages | None |
Cruise Disengage 2 History | CC | Various messages | None |
Cruise Disengage 3 History | CC | Various messages | None |
Cruise Disengage 4 History | CC | Various messages | None |
Cruise Disengage 5 History | CC | Various messages | None |
Cruise Disengage 6 History | CC | Various messages | None |
Cruise Disengage 7 History | CC | Various messages | None |
Cruise Disengage 8 History | CC | Various messages | None |
Cruise ON/OFF Switch | CC | On/Off | Off |
Cruise Resume/Accel. Switch | CC | On/Off | Off |
Cruise Set/Coast Switch | CC | On/Off | Off |
Cycles of Misfire Data | MF | 0-100 Counts | Varies |
Decel Fuel Cutoff | ED, FT, HO2S | Active/Inactive | Inactive |
Desired Idle Speed | CC, ED, EVAP, TAC, IND | RPM | PCM Controlled |
EC Ignition Relay Feedback Signal | ED, TAC | Volts | 14 Volts |
Engine Oil Life Remaining | IPC | 0-100% | Varies |
ECT Sensor | ED, EVAP, FT, HO2S, ID, MF, TAC, IND, HVAC, IPC | -40 to +150°C (-40 to +302°F) | 88-105°C (190-221°F) Depends on ambient temperature |
Engine OFF Time | EVAP | Hours, Minutes, Seconds | Varies |
Engine Load | ED, EVAP, FT, HO2S, ID, MF, TAC, IND, HVAC | 0-100% | 23-24% @ Idle 42% @ 2500 RPM |
Engine Oil Pressure Switch | ED, MF, IPC | OK/Low | OK |
Engine Run Time | ED, EVAP, HO2S, ID, CC, MF, TAC, IND, HVAC | Hrs, Min, Sec | Varies |
Engine Speed | ED, EVAP, FT, HO2S, ID, MF, TAC, IPC, IND, CC, ET, HVAC | 0-10,000 RPM | 500-700 RPM |
EVAP Fault History | EVAP | Various Messages | No Vault |
EVAP Purge Solenoid Command | ED, EVAP, FT, HO2S | 0-100% | 10-30% |
EVAP Vent Solenoid Command | ED, EVAP | Not Venting/Venting | Venting |
FC Relay 1 Command | HVAC | On/Off | Off |
FC Relay 2 Command | HVAC | On/Off | Off |
Fuel Tank Level Remaining | ED, EVAP, MF, IPC | 0-100% | Varies |
Fuel Tank Pressure Sensor | ED, EVAP | mm/Hg / In H2O | Varies |
Fuel Tank Pressure Sensor | EVAP | Volts | Varies |
Fuel Trim Cell | ED, EVAP, FT | 0-23 | 16, 17, 21 |
Fuel Trim Learn | ED, EVAP, FT | Able/Disable | Disabled |
Fuel Level Sensor | EVAP, IPC | 0-2.5 Volts | Varies |
Fuel Pump Relay Command | ED | On/Off | On |
Gen F - Terminal Signal | ET | % | 35% |
Gen L - Terminal Signal | ET | Voltage/No Voltage | No Voltage |
HO2S 1 | ED, EVAP, FT, HO2S, IND | mV | 10-1,000 mV and Varying |
HO2S 2 | ED, FT, HO2S | mV | 10-1,000 mV and Varying |
HO2S 1 Heater | HO2S | Amps | Varies |
HO2S 2 Heater | HO2S | Amps | Varies |
Hot Open Loop | FT, HO2S, HVAC | Active/Inactive | Inactive |
IAT Sensor | ED, EVAP, FT, ID, MF, HO2S, IND, TAC, HVAC | -40 to +152°C (-40 to +305°F) | Depends on ambient temperature |
Ignition Accessory Signal | ED, ET, IPC, HVAC | On/Off | Off |
Ignition 1 Signal | ED, EVAP, FT, HO2S, ID, MF, TAC, HVAC, IND, CC, ET, IPC | 0-25 Volts | 11.5-14.5 Volts |
Intercooler Pump | ID | On/Off | On |
Initial Brake Apply Signal | TAC, CC, ED | Applied/Released | Released |
Injector PWM | FT, MF | Milliseconds | 2-6 ms |
Knock Retard | ID, HVAC | Degrees | 0° |
Long Term FT | ED, EVAP, FT, HO2S | % | Near 0% |
Long Term FT Avg | FT | % | % |
Loop Status | ED, EVAP, FT, HO2S | Open/Closed | Closed |
MAF Sensor | EVAP, FT, HO2S, MF, IND | Hz | Varies |
MAF Sensor | ED, EVAP, FT, HO2S, ID, MF, TAC, IND | g/s | Varies |
MAP Sensor | ED, EVAP, FT, HO2S, ID, MF, TAC, IND | kPa | 20-48 kPa |
Medium Resolution Resync Counter | ID | Counts | 0 |
MIL Command | ED, EVAP, ID, IPC | Off/On | Off |
MIL Requested By DTC | ED, EVAP, ID | No/Yes | No |
Mileage Since DTC Clear | ED | M/Km | Varies |
Misfire Current Cyl 1 | MF | Varies | 0 |
Misfire Current Cyl 2 | MF | Varies | 0 |
Misfire Current Cyl 3 | MF | Varies | 0 |
Misfire Current Cyl 4 | MF | Varies | 0 |
Misfire History Cyl 1 | MF | Varies | 0 |
Misfire History Cyl 2 | MF | Varies | 0 |
Misfire History Cyl 3 | MF | Varies | 0 |
Misfire History Cyl 4 | MF | Varies | 0 |
Non-Driven Wheel Speed | CC, IPC | km/h | 0 km/h |
PCM Reset | ED, EVAP, ID | Yes/No | No |
Power Enrichment | ED, FT, HO2S, MF | Active/Inactive | Inactive |
Reduced Engine Power | TAC, IPC | Active/Inactive | Inactive |
Reference Voltage 1 Signal | ED, EVAP, ID, TAC, HVAC | Volts | 4.98 Volts |
Reference Voltage 2 Signal | ED, EVAP, ID, TAC, HVAC | Volts | 4.98 Volts |
SC Inlet Pressure | IND | kPa | 64 kPa, Varies with altitude |
SC Inlet Pressure Sensor | IND | Volts | 0.45 Volts |
Short Term FT | ED, EVAP, FT, HO2S | % | Near 0% |
Short Term FT Avg | FT | % | 0% |
Spark | ED, FT, HO2S, ID, MF, CC, IND, HVAC | Degrees | 11-20° |
Start Up ECT | EVAP, FT, HO2S, HVAC | °C/°F | Varies |
Start Up IAT | ET, EVAP, FT, HO2S | °C/°F | Varies |
Starter Relay Command | ET | ON/OFF | OFF |
Stop Lamp Pedal Switch | TAC, CC, ET | Released/Applied | Released |
TFT Sensor | HVAC | °C/°F | -40°C to +140°C (-40 to +284°F) |
Total Misfire Count | MF | Count | 0 |
TP Desired Angle | TAC, CC | % | 4.2% |
TP Sensor 1 Learned Minimum | TAC | Volts | 0.55 Volts |
TP Sensor 2 Learned Minimum | TAC | Volts | 0.55 Volts |
Torque Request Signal | TAC, CC | % | Varies |
Torque Delivered Signal | TAC | % | Varies |
TP Indicated Angle | ED, EVAP, FT, HO2S, CC, ID, MF, TAC, IND | % | 4.2% |
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
TP Sensor 1 | TAC | 0-100% | 4% |
TP Sensor 2 | TAC | 0-100% | 4% |
TP Sensor 1 | TAC | 0-5.0 Volts | 4.24 Volts |
TP Sensor 2 | TAC | 0-5.0 Volts | 0.78 Volts |
Traction Control Status | TAC, CC | Active/Inactive | Inactive |
TWC Temperature Calculated | MF | C/F | 350°C |
Vehicle Security Status | ET | Fuel Enabled/Disabled | Fuel Enabled |
Vehicle Speed Sensor | ED, EVAP, HO2S, ID, IPC, CC, MF, TAC, IND, HVAC | km/h mph | 0 |
Warm-ups w/o Non-Emissions Faults | ED | Counts | 0 |
Warm-ups w/o Emissions Faults | ED | Counts | 0 |
