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.CMP: CMP Actuator Data
ED: Engine Data
EVAP: EVAP Data
FT: Fuel Trim Data List
IND: Induction Data
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 | |||
5-Volt Reference 1 | EVAP, ID, IND, TAC | Volts | 4.5 Volts |
5-Volt Reference 1 Circuit Status | ID, IND, TAC | OK/Incomplete/Short B+/ Short Ground/ Short Open | OK |
5-Volt Reference 2 | EVAP, ID, IND, TAC | Volts | 4.5 Volts |
5-Volt Reference 2 Circuit Status | ID, IND, TAC | OK/Incomplete/Short B+/ Short Ground/ Short Open | OK |
A/C Relay Command | ED, MF, IND, TAC | On/Off | Off |
Air Flow Calculated | ED, EVAP, FT, HO2S, IND, MF, TAC | g/s | 3-5 g/s |
Ambient Air Temp | ED, EVAP | Degrees | Varies |
APP Indicated Angle | ALL | 0-96% | 0% |
APP Sensor 1 | TAC | Volts | 1.02 Volts |
APP Sensor 1 Indicated Position | TAC | % | 0% |
APP Sensor 2 | TAC | Volts | 4.04 Volts |
APP Sensor 2 Indicated Position | TAC | % | 0% |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
APP Sensors | TAC | % | 0% |
BARO | ED, EVAP, FT, HO2S, ID, IND | kPa | 65-104 kPa/ Varies w/Altitude |
BPP Circuit Signal | TAC | Applied/Released/ Invalid | Released |
Calc. TWC Temp | FT, MF | °C/°F | 800-1,000°F |
Catalytic Converter Protection Active | FT, HO2S | Yes/No | No |
CKP Active Counter | ID | Counts | Varies |
CKP Resync Counter | ID | Counts | 0 |
CKP Sensor | ID | RPM | 600-700 |
CMMD. A/F Equivalence Ratio | ED, FT, IND, HO2S | Ratio | 1.0:1 |
CMP Sensor | CMP, ID, MF | RPM | Varies |
Cold Start-Up | ED, EVAP | Yes/No | Varies |
CPP Switch | ED, TAC | Applied/Released | Released |
Cruise Control Active | ED, TAC | Yes/No | No |
Cycles of Misfire Data | MF | 0-100 Counts | Varies |
Cyl. 1 IC Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 2 IC Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 3 IC Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 4 IC Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 1 Inj. Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 2 Inj. Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 3 Inj. Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Cyl. 4 Inj. Circuit Status | MF | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
Decel Fuel Cutoff | ED, FT, HO2S | Active/Inactive | Inactive |
Desired Exh. CMP | CMP | Degrees | 0 |
Desired Idle Speed | CMP, ED, EVAP, TAC | RPM | PCM Controlled |
Desired Int. CMP | CMP | Degrees | 0° |
Distance Since DTC Cleared | ED | km/h /mph | Varies |
EC Ignition Relay Circuit Status | TAC | OK/Incomplete/ Short B+/ Short Ground/ Short Open | Incomplete |
EC Ignition Relay Command | ED, TAC | ON/OFF | ON |
EC Ignition Relay Feedback Signal | ED, TAC | Volts | 12-15 Volts |
ECT Sensor | ALL | -40 to -40°C (+151 to +303°F) | 88-105°C (190-221°F) |
Engine Load | ALL | 0-100% | 23-24% @ Idle |
Engine Oil Life Remaining | CMP | % | Varies |
Engine Oil Pressure Switch | CMP, ED, MF | OK/Low | OK |
Engine Oil Temp Calculated | CMP | Degrees | Varies |
Engine Run Time | ALL | Hrs, Min, Sec | Varies |
Engine Speed | ALL | 0-10,000 RPM | 500-700 RPM |
Engine Off Time | EVAP | HH:MM:SS | Varies |
EVAP Fault History | EVAP | No Fault/ Excess Vacuum/ Purge Valve Leak/ Small Leak/ Weak Vacuum/ No Test Result | No Fault |
EVAP Purge Solenoid Command | ED, EVAP, FT, HO2S | 0-100% | 10-30% |
EVAP Purge Solenoid Circuit Status | EVAP | OK/Incomplete/ Short B+/ Short Ground/ Short Open | OK |
EVAP Vent Solenoid Command | ED, EVAP | Not Venting/Venting | Venting |
EVAP Vent Solenoid Status | EVAP | OK/Incomplete/ Short B+/ Short Ground/ Short Open | Incomplete |
Exh. CMP Active Counter | CMP, ID | Counts | 0-250 |
Exh. CMP Angle | CMP | Degrees | 0° |
Exh. CMP Command | CMP | % | 0% |
Exh. CMP Solenoid Circuit Status | CMP | OK/ Incomplete/ Short B+/ Short Ground/ Short Open | Incomplete |
Exh. CMP Variance | CMP | Degrees | 0° |
Fuel Level Sensor | EVAP | Volts | 1-2 Volts |
Fuel Pump Relay Circuit Status | ED | OK/ Incomplete/ Short B+/ Short Ground/ Short Open | Incomplete |
Fuel Tank Level Remaining | ED, EVAP, FT, MF | 0% | Varies |
Fuel Tank Pressure Sensor | EVAP | mm/Hg / In H2O | -1 to +1 |
Fuel Tank Pressure Sensor | EVAP | Volts | 1.5 Volts |
Fuel Tank Rated Capacity | EVAP | Liters | 62.4 |
Fuel Trim Cell | ED, FT | Counts | 16, 17, 21 |
Fuel Trim Learn | FT | Enable/Disable | Enabled |
Fuel Trim System | FT | Disabled/ Enabled/ Run purge test | -- |
Fuel Trim System Test State | FT | Monitoring | Varies |
Fuel Volatility | EVAP, FT | Low/ Med/ High | Low |
HO2S 1 | ED, EVAP, FT, HO2S, IND | mV | 10-1,000 mV and Varying |
HO2S 1 Heater | HO2S | Amps | Varies |
HO2S 1 Heater Circuit Status | HO2S | OK/ Incomplete/ Short B+/ Short Ground/ Short Open | OK |
HO2S 1 Heater Command | HO2S | ON/ OFF | ON |
HO2S 1 Heater Command | TAC | % | 98% |
HO2S 2 | ED, FT, HO2S | mV | 10-1,000 mV and Varying |
HO2S 2 Heater | HO2S | Amps | Varies |
HO2S 2 Heater Circuit Status | HO2S | OK/ Incomplete/ Short B+/ Short Ground/ Short Open | OK |
HO2S 2 Heater Command | HO2S | ON/ OFF | ON |
HO2S 2 Heater Command | TAC | % | 98% |
Hot Open Loop | FT, HO2S | Active/Inactive | Inactive |
IAT Sensor | ALL | -40 to +151°C (-40 to +303°F) | Depends on ambient temperature |
Ignition Accessory Signal | ED, TAC | On/Off | Off |
Ignition 1 Signal | ALL | 0-25 volts | 11.5-14.5 Volts |
Injector 1 Disabled Due to Misfire | MF | Yes/ No | No |
Injector 2 Disabled Due to Misfire | MF | Yes/ No | No |
Injector 3 Disabled Due to Misfire | MF | Yes/ No | No |
Injector 4 Disabled Due to Misfire | MF | Yes/ No | No |
Int. CMP Active Counter | CMP, ID | Counts | 0-250 |
Int. CMP Angle | CMP | Degrees | 0% |
Int. CMP Command | CMP | % | 0% |
Int. CMP Solenoid Circuit Status | CMP | OK/ Incomplete/ Short B+/ Short Ground/ Short Open | Incomplete |
Int. CMP Variance | CMP | Degrees | 0% |
Intake Manifold Pressure | ED, FT, IND | kPa | 55-65 kPa |
Injector PWM | ED, FT, HO2S, MF | Milliseconds | 2-6 ms |
Knock Detected Cyl. 1 | ID | Yes/No | No |
Knock Detected Cyl. 2 | ID | Yes/No | No |
Knock Detected Cyl. 3 | ID | Yes/No | No |
Knock Detected Cyl. 4 | ID | Yes/No | No |
Knock Retard | ID | Degrees | 0° |
Long Term FT | ED, EVAP, FT, HO2S | % | Near 0% |
Long Term Fuel Trim Test Avg. | FT | Counts | 0.95-1 |
Long Term Fuel Trim Test Avg. w/o Purge | FT | Counts | 0.95-1 |
Loop Status | ED, EVAP, FT, HO2S | Open/Closed | Closed |
MAF Performance Test | FT, IND, TAC | OK/ Fault | OK |
MAF Sensor | IND | Hz | 1,800-2,400 |
MAF Sensor | ALL | g/s | 3-6g/s |
MAP Performance Test 1 | FT, MAP, IND, TAC | OK | OK |
MAP Performance Test 2 | FT, IND, TAC | OK/ Fault | OK |
MAP Sensor | IND | Volts | 1-2 Volts |
MAP Sensor | ALL | kPa | 20-48 kPa |
MIL Circuit Status | ED | OK/ Incomplete/ Short B+/ Short Ground/ Short Open | Incomplete |
MIL Command | ED | Off/On | Off |
MIL Requested By DTC | ALL | Yes/No | No |
Misfire Current Cyl #1 | MF | Counts | 0 |
Misfire Current Cyl #2 | MF | Counts | 0 |
Misfire Current Cyl #3 | MF | Counts | 0 |
Misfire Current Cyl #4 | MF | Counts | 0 |
Misfire History Cyl #1 | MF | Counts | 0 |
Misfire History Cyl #2 | MF | Counts | 0 |
Misfire History Cyl #3 | MF | Counts | 0 |
Misfire History Cyl #4 | MF | Counts | 0 |
PNP Switch | ED | Park/ Net/ In Gear | Varies |
Power Enrichment | ED, FT, HO2S, MF | Active/Inactive | Inactive |
Reduced Engine Power | TAC | Active/Inactive | Inactive |
Short Term Fuel Trim Test Avg. | FT | Counts | 0.95-1 |
Short Term FT | ED, EVAP, FT, HO2S | % | Near 0% |
Spark | ED, FT, HO2S, ID, IND, MF | Degrees | 5-20° |
Start Up ECT | EVAP, HO2S | °C/°F | Varies |
Start Up IAT | EVAP, HO2S | °C/°F | Varies |
TAC Forced Engine Shutdown | TAC | Yes/No | No |
TAC Motor | TAC | Enabled/Disabled | Enabled |
TAC Motor Command | TAC | % | 20% |
TCC/Cruise Brake Pedal Switch | ED, TAC | Applied/Released | Released |
TCS Torque Delivered Signal | TAC | % | 0% |
TCS Torque Request Signal | TAC | % | 0% |
Torque Management Spark Retard | ID | Degrees | 0° |
Total Knock Retard | ID | Degrees | 0° |
Total Misfire Count | MF | Count | 0 |
TP Desired Angle | TAC | % | 4% |
TP Indicated Angle | ALL | % | 4.2% |
TP Performance Test | FT, IND, TAC | Active/Inactive | Inactive |
TP Sensor 1 | TAC | 0-5 Volts | 4.24 Volts |
TP Sensor 1 Indicated Position | TAC | % | 4% |
TP Sensor 1 Learned Minimum | TAC | Volts | 0.55 Volts |
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
TP Sensor 2 | TAC | 0-100% | 4% |
TP Sensor 2 | TAC | 0-5 Volts | 0.43 Volts |
TP Sensor 2 Indicated Position | TAC | % | 4% |
TP Sensor 2 Learned Minimum | TAC | Volts | 0.57 Volts |
Vehicle Speed Sensor | ALL | km/h (mph) | 0 |
Warm-ups Since DTC Cleared | ED | Counts | Varies |
Warm-ups Without Emission Faults | ED | Counts | Varies |
Warm-ups Without Non-Emission Faults | ED | Counts | Varies |
Wide Open Throttle | TAC | Yes/No | No |
