Scan Tool Data List 2001
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 - Engine Controls 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 1: Engine data 1Eng 2: Engine data 2
EGR: Exhaust gas recirculation (EGR) data
EVAP: Evaporative emission (EVAP) data
FUEL TRIM: Fuel trim data
Misfire: Misfire data
ODD: Output driver 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 | |||
3X Crank Sensor | Eng 2 | RPM | Varies |
18X Crank Sensor | Eng 2 | RPM | Varies |
1-2 Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
2-3 Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
A/C High Side Pressure | Eng 2 | kPa/PSI/Volts | Varies |
A/C Off For WOT | Eng 2 | Yes/No | No |
A/C Pressure Disable | Eng 2 | Yes/No | No |
A/C Relay Command | Eng 1, 2, Misfire, EGR | On/Off | Off |
A/C Relay Circuit Status | ODD | OK/Fault/Invalid State | OK |
A/C Request Signal | Eng 2 | Yes/No | No |
Air Fuel Ratio | Eng 2, Fuel Trim | Ratio | 14.2:1-14.7:1 |
AIR Pump Relay Circuit Status | ODD | OK/Fault/Invalid State | OK |
Air Pump Relay Command | Eng 1, Fuel Trim | ON/OFF | OFF |
AIR Solenoid Command | Eng 1, Fuel Trim | ON/OFF | OFF |
BARO | Eng 1, EGR, EVAP, Fuel Trim | kPa | 65-110 kPa |
Boost Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
Boost Solenoid Command | Engine 2 | Percent | 100% |
CMP Sensor Signal Present | Eng 2 | Yes/No | Yes |
Cruise Control Active | Eng 1 | Yes/No | No |
Cruise Inhibit Reason | Eng 1 | Vehicle Speed/ Brake/Clutch | Vehicle Speed |
Cruise Inhibit Signal Circuit Status | ODD | OK/Stuck Low (open)/Stuck High/Fault | OK |
Cruise Inhibit Signal Command | Eng 1 | On/Off | On |
Current Gear | Eng 1, Eng 2, EGR, Fuel Trim | Transmission Gear Position | 1 |
Cycles of Misfire Data | Misfire | Counts | 0-99 |
Cyl. 1-6 Injector Circuit History | ODD | OK | OK |
Cyl. 1-6 Injector Circuit Status | ODD | OK/Stuck Low (open)/Stuck High | OK |
Decel Fuel Cut-off | EGR, Fuel Trim | Active/Inactive | Inactive |
Desired EGR Position | Eng 1, EGR, Misfire | Percent | 0 |
Desired EGR Position | EGR | Volts | 0 |
Desired Idle Speed | Eng 1, 2, EVAP | RPM | PCM Controlled (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 |
Driver Module 4 Status | ODD | Enabled/Off-High Volts/Off High Temp/Invalid State | Enabled |
ECT Sensor | Eng 1, 2, EGR, EVAP, Misfire, Fuel Trim | °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 1, EGR, Misfire | Percent | Varies |
EGR Position Sensor | EGR | Volts | 0 |
EGR Position Variance | EGR | Percent | 0 |
EGR Solenoid Circuit Status | ODD | OK/Fault/ Invalid State | OK |
EGR Solenoid Circuit History | ODD | OK/Fault/ Invalid State | OK |
EGR Solenoid Command | EGR | Percent | 0 |
Engine Hot Lamp Circuit Status | ODD | OK/Fault/ Invalid State | OK |
Engine Hot Lamp Command | Eng 2 | On/Off | Off |
Engine Load | Eng 1, 2, Misfire, Fuel Trim, EVAP, EGR | Percent | 0-100 (Varies) |
Engine Oil Level Switch | Eng 2 | OK/Low | OK |
Engine Oil Life Remaining | Eng 2 | Percent | 0-100% (Varies) |
Engine Run Time | Eng 1, 2, EVAP, Misfire, Fuel Trim, EGR | Hr: Min: Sec | Varies |
Engine Speed | Eng 1, 2, EGR, EVAP, Misfire, Fuel Trim | RPM | Varies |
EVAP Fault History | EVAP | No Fault/Excess Vacuum/Purge Valve Leak/Small Leak/Weak Vacuum | No Fault |
EVAP Purge Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
EVAP Purge Solenoid Command | Eng 1, EVAP, Fuel Trim | Percent | Varies |
EVAP Test Abort Reason | EVAP | Not Aborted/Lost Enable/Small Leak/Vehicle Not At Rest | Not Aborted |
EVAP Test Result | EVAP | No Result/Passed/Aborted/Fail DTCXXXX | Passed |
EVAP Test State | EVAP | Wait For Purge/ Test Running/ Test Completed | Test Completed |
EVAP Vent Solenoid Command | Eng 1, EVAP, Fuel Trim | Venting/Not Venting | Varies |
EVAP Vent Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
FC Relay 1 Circuit Status | ODD | OK/Fault/Invalid State | OK |
FC Relay 1 Command | Eng 2 | On/Off | Off |
FC Relay 2 and 3 Circuit Status | ODD | OK/Fault/Invalid State | OK |
FC Relay 2 and 3 Command | Eng 2 | On/Off | Off |
Fuel Pump Relay Circuit Status | ODD | OK/Fault/Invalid State | OK |
Fuel Pump Relay Circuit History Status | ODD | OK/Fault/Invalid State | OK |
Fuel Pump Relay Command | Eng 1 | On/Off | On |
Fuel Tank Level Remaining | EVAP | Percent | 0-104 |
Fuel Tank Pressure Sensor | Eng 1, EVAP | mm Hg/in H2O | Varies |
Fuel Tank Pressure Sensor | EVAP | Volts | Varies |
Fuel Trim Cell | EVAP, Eng 1, Fuel Trim | 0-4 | 0 |
Fuel Trim Learn | Eng 1, EVAP, Fuel Trim | Enabled/Disabled | Varies |
GEN Lamp Command | Eng 2 | On/Off | Off |
GEN L-Terminal Signal Command | Eng 2 | On/Off | Off |
Generator Lamp Circuit Status | ODD | OK/Fault/Invalid State | OK |
HO2S 1 | EVAP, Eng 1, Fuel Trim | millivolts | 0-1000 and Varying |
HO2S 2 | Eng 1, Fuel Trim | millivolts | 0-1000 and Varying |
IAC Position | Eng 1, EGR, Fuel Trim | Counts | 10-60 |
IAT Sensor | Eng 1, 2, EVAP, EGR, Fuel Trim | °C/°F | Varies |
Ignition 1 Signal | EVAP, Eng 1, 2, EGR, Fuel Trim | Volts | Varies |
Ignition Mode | Eng 2 | IC/Bypass | IC |
Injector PWM | Eng 2, Fuel Trim, Misfire | milliseconds | Varies (1.5-3.5) |
Knock Retard | Eng 1, EGR | Degrees | 0 |
Long Term FT | Eng 1, 2, EVAP, Fuel Trim | Percent | -10% to +10% |
Loop Status | Eng 1, 2, Fuel Trim, EVAP, EGR | Open/Closed | Closed |
Low Oil Lamp Circuit Status | ODD | OK/Fault/Invalid State | OK |
Low Oil Lamp Command | Eng 2 | On/Off | Off |
MAF Sensor | Eng 1, 2, EGR, Misfire, EVAP, Fuel Trim | Grams per Second | 3-6 (depends on altitude) |
MAF Sensor | Eng 2 | Hz | 1,200-3,000 (depends on altitude) |
MAP Sensor | Eng 1, 2 | Volts | 0.4-2.0 Volts |
MAP Sensor | Eng 1, 2, EVAP, Fuel Trim, Misfire, EGR | kPa | 20-48 kPa (depends on altitude) |
MIL Command | Eng 2 | On/Off | Off |
MIL Circuit Status | ODD | OK/Fault/Invalid State | OK |
Misfire Current Cyl. 1-6 | Misfire | Counts | 0-4 |
Misfire History Cyl. 1-6 | Misfire | Counts | 0 |
Number of DTCs | Eng 1, EVAP, Fuel Trim | # | 0 |
Power Enrichment | Eng 2, Misfire | Active/Inactive | Inactive |
Short Term FT | Eng 1, 2, EVAP, Fuel Trim | Percent | -10 to +10 |
Spark | Eng 1, 2, Misfire, Fuel Trim | Degrees | 22 (varies) |
Start Up ECT | EVAP, Fuel Trim | °C/°F | Varies |
Start Up IAT | EVAP, Fuel Trim | °C/°F | Varies |
TCC Brake Pedal Switch | Eng 1, 2 | Applied/Released | Released |
TCC PWM Solenoid Command | Eng 2 | On/Off | Off |
TFP Switch | Eng 2, EGR, Fuel Trim | Park/Neutral/Drive 1/Drive 2/Drive 3/Drive 4 | Park/Neutral |
Torque Request Signal (If Equipped) | Eng 2 | Percent | 100% |
Torque Delivered Signal (If Equipped) | Eng 2 | Percent | 75% |
TP Sensor | Eng 1, 2 | Volts | 0.2-0.8 |
TP Sensor | Eng 1, 2, EGR, Fuel Trim, EVAP, Misfire | Percent | 0 |
Traction Control Status (If Equipped) | Eng 2 | Active/Inactive | Inactive |
Vehicle Speed Sensor | Eng 1, 2, EGR, EVAP, Fuel Trim, Misfire | MPH/Km/h | 0 |
VTD Fuel Disable | Eng 1 | Active/Inactive | Inactive |
