The Engine Scan Tool Data List contains all engine controls-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
FT: Fuel trim data
HO2S: Heated Oxygen Sensor (HO2S) data
Ign: Ignition System data
I/M: I/M data
Misfire: Misfire data
ODD: Output Driver data
TAC: Throttle Actuator Control Data
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
Operating Conditions: Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off/Brake Pedal Released | |||
APP Indicated Angle | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC | % | 0 |
APP Sensor 1 | TAC | Volts | 0.86 |
APP Sensor 1 | TAC | % | 0 |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
APP Sensor 1 Circuit Status | TAC | OK/Fault | OK |
APP Sensor 2 | TAC | Volts | 0.88 |
APP Sensor 2 | TAC | % | 0 |
APP Sensor 2 Circuit Status | TAC | OK/Fault | OK |
BARO | Eng, EGR, EVAP, FT, HO2S, Ign, I/M | kPa | 60-104 (varies with altitude) |
Catalyst Monitor Complete This Ignition | I/M | Yes/No | Varies |
Catalyst Monitor Enabled This Ignition | I/M | Yes/No | Yes |
Catalytic Converter Protection Active | FT, HO2S | Yes/No | No |
CKP Sensor | Ign | RPM | 700-750 |
Cmmd. A/F Equivalence Ratio | Eng, FT, HO2S | :1 | 1.0 |
CMP Sensor | Ign, Misfire | RPM | 700-750 |
CMP Sensor Signal Present | Ign | Yes/No | Yes |
Cycles of Misfire Data | Misfire | Counts | 0-100 incrementing |
Cylinder 1 and 4 IC Circuit Status | ODD | OK/Fault | OK |
Cylinder 1 Injector Circuit History | ODD | OK/Open/Short/Invalid | OK |
Cylinder 1 Injector Circuit Status | ODD | OK/Fault | OK |
Cylinder 2 and 5 IC Circuit Status | ODD | OK/Fault | OK |
Cylinder 2 Injector Circuit History | ODD | OK/Open/Short/Invalid | OK |
Cylinder 2 Injector Circuit Status | ODD | OK/Fault | OK |
Cylinder 3 and 6 IC Circuit Status | ODD | OK/Fault | OK |
Cylinder 3 Injector Circuit History | ODD | OK/Open/Short/Invalid | OK |
Cylinder 3 Injector Circuit Status | ODD | OK/Fault | OK |
Cylinder 4 Injector Circuit History | ODD | OK/Open/Short/Invalid | OK |
Cylinder 4 Injector Circuit Status | ODD | OK/Fault | OK |
Cylinder 5 Injector Circuit History | ODD | OK/Open/Short/Invalid | OK |
Cylinder 5 Injector Circuit Status | ODD | OK/Fault | OK |
Cylinder 6 Injector Circuit History | ODD | OK/Open/Short/Invalid | OK |
Cylinder 6 Injector Circuit Status | ODD | OK/Fault | OK |
Decel. Fuel Cutoff | Eng, EGR, FT, HO2S | Active/Inactive | Inactive |
Desired EGR Position | EGR | % | 0 |
Desired Idle Speed | Eng, EVAP, TAC | RPM | 720 |
Distance Since DTC Cleared | Eng | km/miles | Varies |
Driver 1 Module Status | ODD | Enabled/Off-High Volts/Off-High Temp/Invalid | Enabled |
Driver 2 Module Status | ODD | Enabled/Off-High Volts/Off-High Temp/Invalid | Enabled |
Driver 3 Module Status | ODD | Enabled/Off-High Temp | Enabled |
EC Ignition Relay Circuit History | ODD | OK/Open/Short/Invalid | OK |
EC Ignition Relay Circuit Status | ODD | OK/Fault/Invalid | OK |
ECT Sensor | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC, I/M | °C/°F | 99/210 |
EGR Flow Test Count | EGR | Counts | 0-12 |
EGR Learned Minimum Position | EGR | Volts | 0.14-1.0 |
EGR Monitor Complete This Ignition | I/M | Yes/No | Varies |
EGR Monitor Enabled This Ignition | I/M | Yes/No | Yes |
EGR Position Sensor | Eng, EGR, Misfire | % | 0 |
EGR Position Sensor | EGR | Volts | 0.71 |
EGR Position Variance | EGR | % | -100 |
EGR Solenoid Circuit history | ODD | OK/Open/Stuck Low/Stuck High/High Voltage/High Temp/Invalid | OK |
EGR Solenoid Circuit Status | ODD | OK/Fault/Invalid | OK |
EGR Solenoid Command | EGR | % | 0 |
Engine Load | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC | % | Varies |
Engine Run Time | Eng, EGR, EVAP, FT, HO2S, Ign, I/M, Misfire, TAC, ODD | Hr:Min:Sec | Varies |
Engine Speed | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC | RPM | 700-750 |
Engine Speed Circuit Status | ODD | OK/Fault/Invalid | OK |
EVAP Fault History | EVAP | No Fault/Excess Vacuum/Purge Valve Leak/ Small Leak/Weak Vacuum/No Test Result | No Fault |
EVAP Monitor Complete This Ignition | I/M | Yes/No | Varies |
EVAP Monitor Enabled This Ignition | I/M | Yes/No | No |
EVAP Purge Solenoid Circuit History | ODD | OK/Open/Short/Invalid | OK |
EVAP Purge Solenoid Circuit Status | ODD | OK/Fault/Invalid | OK |
EVAP Purge Solenoid Command | Eng, EVAP, FT, HO2S | % | 10-15 |
EVAP Vent Solenoid Circuit History | ODD | OK/Open/Short/Invalid | OK |
EVAP Vent Solenoid Circuit Status | ODD | OK/Fault/Invalid | OK |
EVAP Vent Solenoid Command | Eng, EVAP | Venting/Not Venting | Venting |
Fuel Level Sensor | EVAP | Volts | Varies |
Fuel Pump Relay Circuit History | ODD | OK/Open/Stuck Low/Stuck High/High Voltage/High Temp/Invalid | OK |
Fuel Pump Relay Circuit Status | ODD | OK/Fault/Invalid | OK |
Fuel Pump Relay Command | Eng | On/Off | On |
Fuel Tank Level Remaining | EVAP, FT, Misfire, I/M | % | Varies |
Fuel Tank Pressure Sensor | Eng, EVAP | mm Hg/in H2O | -19.8 to +12.52/-10.5 to +6.17 |
Fuel Tank Pressure Sensor | EVAP | Volts | 0.2-4.0 |
Fuel Trim Cell | Eng, FT | Cell | 0 |
Fuel Trim Learn | FT | Enabled/Disabled | Enabled |
HO2S 1 | Eng, EVAP, FT, HO2S | mV | 0-1,000 |
HO2S 2 | Eng, FT, HO2S | mV | 50-850 |
HO2S 1 Heater Command | HO2S | On/Off | On |
HO2S 2 Heater Command | HO2S | On/Off | On |
HO2S 1 Heater | HO2S | amps | 0.50-1.00 |
HO2S 1 Heater Circuit History | ODD | OK/Open/Short/Invalid | OK |
HO2S 1 Heater Circuit Status | ODD | OK/Fault/Invalid | OK |
HO2S 1 Ready | FT, HO2S | Yes/No | Yes |
HO2S 2 Heater | HO2S | amps | 0.50-1.00 |
HO2S 2 Heater Circuit History | ODD | OK/Open/Short/Invalid | OK |
HO2S 2 Heater Circuit Status | ODD | OK/Fault/Invalid | OK |
HO2S Heater Monitor Complete This Ignition | I/M | Yes/No | Varies |
HO2S Heater Monitor Enabled This Ignition | I/M | Yes/No | Varies |
HO2S/O2S Monitor Complete This Ignition | I/M | Yes/No | Varies |
HO2S/O2S Monitor Enabled This Ignition | I/M | Yes/No | Varies |
HOT Open Loop | FT, HO2S | Active/Inactive | Inactive |
IAT Sensor | Eng, EGR, EVAP, FT, HO2S, Ign, I/M, Misfire, TAC | °C/°F | Varies |
Ignition 1 Signal | Eng, EGR, EVAP, FT, HO2S, Ign, I/M, Misfire | Volts | 12-14.5 |
Ignition Mode | Ign | IC/Bypass | IC |
Ignition Off Time | Eng, EVAP, I/M | min | Varies |
Injector PWM | Eng, FT, HO2S, Misfire | ms | 1.85-2.05 |
Knock Retard | EGR, Ign | degrees | 0 |
KS Active Counter | Ign | Yes/No | No |
Long Term FT | Eng, EVAP, FT, HO2S | % | 0 |
Loop Status | Eng, EVAP, FT, HO2S | Open/Closed | Closed |
MAF Sensor | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC | g/s | 3-6 (varies with altitude) |
MAF Sensor | Eng | Hz | 1,200-1,300 (varies with altitude) |
MAP Sensor | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC | kPa | 20-48 (varies with altitude) |
MAP Sensor | Eng | Volts | 0.4-2.0 (varies with altitude) |
MIL Circuit History | ODD | OK/Open/Short/Invalid | OK |
MIL Circuit Status | ODD | OK/Fault/Invalid | OK |
MIL Command | Eng, I/M | On/Off | Off |
Misfire Current Cyl. 1 | Misfire | Counts | 0 |
Misfire Current Cyl. 2 | Misfire | Counts | 0 |
Misfire Current Cyl. 3 | Misfire | Counts | 0 |
Misfire Current Cyl. 4 | Misfire | Counts | 0 |
Misfire Current Cyl. 5 | Misfire | Counts | 0 |
Misfire Current Cyl. 6 | Misfire | Counts | 0 |
Misfire History Cyl. 1 | Misfire | Counts | 0 |
Misfire History Cyl. 2 | Misfire | Counts | 0 |
Misfire History Cyl. 3 | Misfire | Counts | 0 |
Misfire History Cyl. 4 | Misfire | Counts | 0 |
Misfire History Cyl. 5 | Misfire | Counts | 0 |
Misfire History Cyl. 6 | Misfire | Counts | 0 |
Power Enrichment | Eng, FT, HO2S, Misfire | Active/Inactive | Inactive |
Short Term FT | Eng, EVAP, FT, HO2S | % | 0 |
Spark | Eng, FT, HO2S, Ign, Misfire | degrees | 18-24 |
Start-up ECT | EVAP, HO2S, I/M | °C/°F | Varies |
Start-up IAT | EVAP, HO2S, I/M | °C/°F | Varies |
TAC Stoplamp Pedal Switch | TAC | Released/Applied | Released |
TAC Vehicle Speed Signal | TAC | OK/Fault | OK |
TAC/PCM Communication Signal | TAC | OK/Fault | OK |
Total Misfire | Misfire | Counts | 0 |
TP Desired Angle | TAC | % | 3 |
TP Indicated Angle | Eng, EGR, EVAP, FT, HO2S, Ign, Misfire, TAC | % | 3 |
TP Sensor 1 | TAC | Volts | 0.69 |
TP Sensor 1 | TAC | % | 3 |
TP Sensor 1 Circuit Status | TAC | OK/Fault | OK |
TP Sensor 2 | TAC | Volts | 0.69 |
TP Sensor 2 | TAC | % | 3 |
TP Sensor 2 Circuit Status | TAC | OK/Fault | OK |
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
TWC Temperature Calculated | FT, Misfire | °C/°F | Varies |
Vehicle Speed Sensor | Eng, EGR, EVAP, FT, HO2S, Ign, I/M, Misfire, TAC | km/h /mph | 0 |
Warm-ups Since DTC Cleared | Eng | Counts | Varies |
Warm-ups w/o Emission Faults | Eng | Counts | Varies |
Warm-ups w/o Non-Emission Faults | Eng | Counts | Varies |
