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:
- Eng
-
Engine Data
- AIR
-
AIR Data(L26 and NU3 only)
- EGR
-
EGR Data
- EVAP
-
EVAP Data
- FUEL TRIM
-
Fuel trim Data
- HO2S
-
HO2S Data
- Ignition
-
Ignition Data
- Misfire
-
Misfire Data
- TAC
-
Throttle Actuator Control Data
- ODD
-
Output driver 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 | |||
| A/C Relay Command | AIR, EGR, Eng, HO2S, Misfire, TAC | On/Off | Off |
| A/C Relay Circuit Status | ODD | OK/Fault/Invalid State | OK |
| A/C Relay Circuit History | ODD | OK/Fault/Invalid State | OK |
| Air Fuel Ratio | AIR, Eng, Fuel Trim, HO2S | Ratio | 14.2:1-14.7:1 |
| AIR Indicated Pressure | AIR | psi/kPa | varies |
| AIR Pressure Sensor | AIR | PSI/kPa | varies |
| Air Pressure Sensor | AIR | volts | varies |
| AIR Pump Relay Command | AIR, Eng, Fuel Trim, HO2S, ODD | On/Off | Off |
| AIR Solenoid Command | AIR, Eng, Fuel Trim, HO2S, ODD | On/Off | Off |
| AIR Test State | AIR | Test Disabled, Phase 1, Phase 2, Phase 3, Result Avail, Test Completed | varies |
| AIR Test Result | AIR | Test Running, Aborted, Passed, Fail-DTC Set, Fail-DTC Set, Fail-DTC Set, No Result, Error | varies |
| APP Indicated Angle | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | Percent | 0 |
| APP Sensor 1 | TAC | Volts | Varies |
| APP Sensor 1 | TAC | Percent | Varies |
| APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
| APP Sensor 1 Circuit Status | TAC | OK/Fault | OK |
| APP Sensor 2 | TAC | Volts | Varies |
| APP Sensor 2 | TAC | Percent | Varies |
| APP Sensor 2 Circuit Status | TAC | OK/Fault | OK |
| BARO | AIR, Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition | kPa | 65-110 kPa |
| BARO Sensor | Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition | Volts | varies |
| Boost Solenoid Circuit Status (L32 only) | ODD | OK/Fault/Invalid State | OK |
| Boost Solenoid Command (L32 only) | Eng, Fuel Trim | Percent | 100% |
| Catalytic Converter Protection Active | Fuel trim, HO2S | Yes/No | No |
| CMP Sensor | Ignition | RPM | varies |
| CMP Sensor Signal Present | Ignition, Misfire, | Yes/No | Yes |
| Crankshaft Position Sensor A | Ignition | counts | varies |
| Crankshaft Position Sensor B | ignition | counts | varies |
| Cruise Control Active | TAC | Yes/No | No |
| Cycles of Misfire Data | Misfire | Counts | 0-99 |
| Cylinder 1 and 4 IC Circuit Status | ODD | OK/Fault/Invalid State | Ok |
| Cylinder 2 and 5 IC Circuit Status | ODD | OK/Fault/Invalid State | Ok |
| Cylinder 3 and 6 IC Circuit Status | ODD | OK/Fault/Invalid State | Ok |
| Cyl. 1-6 Injector Circuit Status | ODD | OK/Stuck Low (open)/Stuck High | Ok |
| Cyl. 1-6 Injector Circuit Status | ODD | OK/Stuck Low (open)/Stuck High | OK |
| Decel Fuel Cut-off | EGR, Eng, 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 History | ODD | OK/ Fault/ Invalid State | Ok |
| EC Ignition Relay Circuit Status | ODD | OK/ Fault/ Invalid State | OK |
| ECT Sensor | AIR, Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition, Misfire, 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 Status | ODD | OK/Fault/ Invalid State | OK |
| EGR Solenoid Command | EGR | Percent | 0 |
| Engine Load | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | Percent | 0 |
| Engine Oil Level Switch | Eng | OK/Low | OK |
| Engine Oil Pressure Switch | Eng | Low/OK | OK |
| Engine Run Time | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, ODD, TAC | Hr: Min: Sec | Varies |
| Engine Speed | AIR, Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | RPM | Varies |
| Engine Speed Circuit History | ODD | Ok/Fault | OK |
| Engine Speed Circuit Status | ODD | Ok/Fault | Ok |
| EVAP Purge Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
| EVAP Purge Solenoid Circuit History | ODD | OK/Fault/Invalid State | OK |
| EVAP Purge Solenoid Command | Eng, EVAP, Fuel Trim, HO2S | Percent | Varies |
| EVAP Vent Solenoid Command | Eng, EVAP | Venting/Not Venting | Varies |
| EVAP Vent Solenoid Circuit Status | ODD | OK/Fault/Invalid State | OK |
| EVAP Vent Solenoid Circuit History | ODD | OK/Fault/Invalid State | OK |
| FC Relay 1 Circuit Status | ODD | OK/Fault/Invalid State | OK |
| FC Relay 1 Circuit History | ODD | OK/Fault/Invalid State | Ok |
| FC Relay 2 and 3 Circuit Status | ODD | OK/Fault/Invalid State | OK |
| FC Relay 2 and 3 Circuit History | 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 | Eng, EVAP, Fuel Trim | 0-4 | 0 |
| Fuel Trim Learn | Eng, EVAP, Fuel Trim | Enabled/Disabled | Varies |
| HO2S 1 | AIR, Eng, EVAP, Fuel Trim, HO2S | millivolts | 0-1000 and Varying |
| HO2S 1 Heater | HO2S | Amps | Varies |
| HO2S 1 Heater Circuit History | ODD | OK/Fault/Invalid State | Ok |
| HO2S 1 Heater Circuit Status | ODD | OK/ Fault | OK |
| HO2S 1 Heater Command | HO2S | On/Off | On |
| HO2S 1 Ready | Fuel Trim, HO2S | Yes/No | Yes |
| HO2S 2 | Eng, Fuel Trim, HO2S | millivolts | 0-1000 and Varying |
| HO2S 2 Heater | HO2S | Amps | Varies |
| HO2S 2 Heater Circuit History | ODD | OK/Fault/Invalid State | Ok |
| HO2S 2 Heater Circuit Status | ODD | OK/ Fault | OK |
| HO2S 2 Heater Command | HO2S | On/Off | On |
| Hot Open Loop | Fuel Trim, HO2S | Active/Inactive | Inactive |
| IAT Sensor | AIR, Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | °C/°F | Varies |
| Ignition 1 Signal | AIR, Eng, EGR, EVAP, Fuel Trim, HO2S, Ignition, Misfire, ODD | Volts | Varies |
| Ignition Off Time | Eng, EVAP | Minutes | varies |
| Ignition Mode | Ignition | IC/Bypass | IC |
| Initial Brake Apply Signal | TAC | Released/ Applied | Released |
| Injector PWM | Eng, Fuel Trim, HO2S, Misfire | milliseconds | Varies |
| Knock Retard | EGR, Ignition | Degrees | 0 |
| KS Activity | Ignition | Yes/No | No |
| Long Term FT | AIR, Eng, EVAP, Fuel Trim, HO2S | Percent | -10% to +10% |
| Loop Status | AIR, Eng, EVAP, Fuel Trim, HO2S | Open/Closed | Closed |
| MAF Sensor | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | g/s | 3-6 (Varies with altitude) |
| MAF Sensor | EVAP, Fuel Trim, HO2S, TAC | Hz | 1,200-3,000 (depends on altitude) |
| MAP Sensor | AIR, EGR, Eng, Fuel Trim, HO2S, TAC | Volts | 0.4-2.0 Volts |
| MAP Sensor | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | kPa | 20-48 kPa (Varies with altitude) |
| Mileage Since DTC Cleared | Eng | kM/Miles | varies |
| MIL Command | EGR, Eng, EVAP, Ignition | On/Off | Off |
| MIL Circuit Status | ODD | OK/Fault/Invalid State | OK |
| MIL Circuit History | 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 | Number | 0 |
| PCM Reset | Eng, EGR, EVAP, Ignition, ODD | Yes/No | No |
| Power Enrichment | Eng, Fuel Trim, HO2S, Misfire | Active/Inactive | Inactive |
| Short Term FT | AIR, Eng, EVAP, Fuel Trim, HO2S | Percent | -10 to +10 |
| Spark | Eng, Fuel Trim, HO2S, Ignition | Degrees | 22 (varies) |
| Starter Relay Circuit Status | ODD | OK/ Fault | OK |
| Starter Relay Circuit History | ODD | OK/ Fault | OK |
| Start Up ECT | AIR, EVAP, Fuel Trim, HO2S | °C/°F | Varies |
| Start Up IAT | AIR, EVAP, Fuel Trim, HO2S | °C/°F | Varies |
| Stop Lamp Signal | Eng | Applied/Released | Released |
| Stop Lamp Pedal Switch | TAC | Applied/Released | Released |
| TAC/PCM Communications Signal | TAC | OK/ Fault | OK |
| TAC Stop Lamp Pedal Switch | TAC | Applied/Released | Released |
| TAC Vehicle Speed Signal | TAC | OK/Not OK | OK |
| TCS Delivered Torque Circuit Status | ODD | OK/ Fault | OK |
| Torque Request Signal (If Equipped) | TAC | Percent | 100% |
| Torque Delivered Signal (If Equipped) | TAC | Percent | 75% |
| Total Misfire | Misfire | counts | varies |
| TP Desired Angle | TAC | Percent | Varies |
| TP Indicated Angle | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | Percent | varies |
| TP Sensor 1 | TAC | Volts | Varies |
| TP Sensor 1 | TAC | Percent | Varies |
| TP Sensor 1 and 2 | TAC | Agree/ Disagree | Agree |
| TP Sensor 1 Circuit Status | TAC | OK/Fault/Invalid State | Ok |
| TP Sensor 2 | TAC | Volts | Varies |
| TP Sensor 2 | TAC | Percent | Varies |
| TP Sensor 2 Circuit Status | TAC | OK/Fault/Invalid State | Ok |
| Traction Control Status (If Equipped) | TAC | Active/Inactive | Inactive |
| TWC Temperature Calculated | Fuel Trim | Degrees | varies |
| Vehicle Speed Circuit History | ODD | Ok/Fault | Ok |
| Vehicle Speed Circuit Status | ODD | Ok/fault | Ok |
| Vehicle Speed Sensor | AIR, EGR, Eng, EVAP, Fuel Trim, HO2S, Ignition, Misfire, TAC | mph/ km/h | 0 |
| Warm-ups w/o Emission Faults | Eng | 0-9 | 0 |
| Warm-ups Won-Emission Faults | Eng | 0-9 | 0 |