Scan Tool Data List
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 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:
- CC
-
Cruise Data
- Eng 1
-
Engine data 1
- Eng 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
- TAC Output
-
Throttle Actuator Control Data
Scan Tool Data List
| 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 |
| A/C High Side Pressure Sensor | 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 |
| APP Average | TAC | Number | 0 |
| APP Indicated Angle | Eng 1, 2, EGR, EVAP, TAC, Fuel Trim, CC | Percent | 0 |
| APP Sensor 1 | TAC | Volts | Varies |
| APP Sensor 2 | TAC | Volts | Varies |
| APP Sensor 1 | TAC | Percent | Varies |
| APP Sensor 2 | TAC | Percent | Varies |
| APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
| 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, CC, TAC | Yes/No | No |
| Cruise Disengage History 1-6 | CC | None | None |
| Cruise Mode Signal | CC | Volts | 0.0 |
| Cruise ON/OFF Switch | CC, TAC | On/Off | Off |
| Cruise Resume/Accel Switch | CC, TAC | On/Off | Off |
| Cruise Set/Coast Switch | CC, TAC | On/Off | Off |
| Current Gear | Eng 1, Eng 2, EGR, Fuel Trim | 1, 2, 3, 4 | 1 |
| Cycles of Misfire Data | Misfire | Counts | 0-99 |
| 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, 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 | ODD | OK/ Fault/ Invalid State | OK |
| 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 Command | EGR | Percent | 0 |
| Engine Load | Eng 1, 2, Misfire, Fuel Trim, EVAP, EGR, CC, TAC | Percent | 0 |
| Engine Oil Level Switch | Eng 2 | OK/Low | OK |
| Engine Oil Life Remaining | Eng 2 | Percent | 0-100% (Varies) |
| Engine Oil Pressure Switch | Eng 2 | Low/OK | OK |
| Engine Run Time | Eng 1, 2, EVAP, Misfire, Fuel Trim, EGR, CC, TAC | Hr: Min: Sec | Varies |
| Engine Speed | Eng 1, 2, EGR, EVAP, Misfire, Fuel Trim, CC, TAC | 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 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 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 L-Terminal Signal Command | Eng 2 | On/Off | Off |
| HO2S 1 | EVAP, Eng 1, Fuel Trim | millivolts | 0-1000 and Varying |
| HO2S 2 | Eng 1, Fuel Trim | millivolts | 0-1000 and Varying |
| HO2S 1 Heater Circuit Status | ODD | OK/ Fault | OK |
| HO2S 2 Heater Circuit Status | ODD | OK/ Fault | OK |
| HO2S 1 Heater Command | Eng 2 | On/Off | On |
| HO2S 2 Heater Command | Eng 2 | On/Off | On |
| HO2S 1 Heater Current | Eng 2 | Amps | Varies |
| HO2S 2 Heater Current | Eng 2 | Amps | Varies |
| IAT Sensor | Eng 1, 2, EVAP, EGR, Fuel Trim | °C/°F | Varies |
| Ignition 1 Signal | EVAP, Eng 1, 2, EGR, Fuel Trim, CC, TAC | Volts | Varies |
| Ignition Mode | Eng 2 | IC/Bypass | IC |
| IMS | Eng 1, 2, EGR, Fuel Trim, CC | P, R, N, D4, D, 3, D2, D1 | P |
| Initial Brake Apply Signal | CC, TAC | Released/ Applied | Released |
| Injector PWM | Eng 2, Fuel Trim, Misfire | milliseconds | Varies |
| 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 |
| MAF Sensor | Eng 1, 2, EGR, Misfire, EVAP, Fuel Trim, TAC | g/s | 3-6 (Varies with 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, TAC | kPa | 20-48 kPa (Varies with 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, TAC | Number | 0 |
| PCM/VCM in VTD Fail/Enable | Eng 1 | Yes/No | No |
| Power Enrichment | Eng 2, Misfire | Active/Inactive | Inactive |
| Reduced Engine Power | Eng 1, TAC, Misfire, CC | 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) |
| Starter Enable Relay Circuit Status | ODD | OK/ Fault | OK |
| Starter Relay Command | Eng 2 | On/Off | Off |
| Start Up ECT | EVAP, Fuel Trim | °C/°F | Varies |
| Start Up IAT | EVAP, Fuel Trim | °C/°F | Varies |
| Stop Lamp Signal | CC, TAC | On/Off | Off |
| TAC/PCM Communications Signal | Eng 1, CC, TAC | OK/ Fault | OK |
| TCC Brake Pedal Switch | Eng 2 | Applied/Released | Released |
| TCC PWM Solenoid Circuit Status | ODD | OK/ Fault/ Invalid State | OK |
| TCC PWM Solenoid Command | Eng 2, Misfire, CC | On/Off | Off |
| TCS Delivered Torque Circuit Status | ODD | OK/ Fault | OK |
| Torque Request Signal (If Equipped) | Eng 2, TAC | Percent | 100% |
| Torque Delivered Signal (If Equipped) | Eng 2, TAC | Percent | 75% |
| TP Desired Angle | Eng 1, 2, EGR, TAC, Fuel Trim, EVAP, CC | Percent | Varies |
| TP Indicated Angle | Eng 1, 2, EGR, Fuel Trim, EVAP, Misfire, CC, TAC | Percent | % |
| TP Sensor 1 | TAC | Volts | Varies |
| TP Sensor 2 | TAC | Volts | Varies |
| TP Sensor 1 | TAC | Percent | Varies |
| TP Sensor 2 | TAC | Percent | Varies |
| TP Sensor 1 and 2 | TAC | Agree/ Disagree | Agree |
| Traction Control Status (If Equipped) | Eng 2, CC, TAC | Active/Inactive | Inactive |
| Vehicle Speed Sensor | Eng 1, 2, EGR, EVAP, Fuel Trim, Misfire, CC, TAC | mph/ km/h | 0 |
| VTD Auto Learn Timer | Eng 1 | Active/ Inactive | Inactive |
| VTD Fuel Disable | Eng 1 | Active/ Inactive | Inactive |
| VTD Fuel Disable until Ignition Off | Eng 1 | Yes/No | No |