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:
| • | Powertrain On-Board Diagnostic System Check is completed |
| • | No Diagnostic Trouble Codes (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 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 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 1 ListEng 2: Engine Data 2 List
EGR: Exhaust Recirculation Valve Data
EVAP: Evaporative Emissions Data
Cat: Exhaust Catalyst Data
HO2S: Heated Oxygen Sensor Data
Misfire: Cylinder Misfire Data
Cruise: Cruise Control 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 | Misfire | RPM | Varies |
18X Crank sensor | Misfire | RPM | Varies |
1-2 Sol. | ODD | OK/Fault/Invalid State | OK |
2-3 Sol. | ODD | OK/Fault/Invalid State | OK |
A/C High Side Pressure | Eng 2 | Volts | Varies |
A/C Press Out of Range | Eng 2 | Yes/No | No |
A/C Relay | ODD | OK/Fault/Invalid State | OK |
Actual EGR Position | Eng 1, 2, EGR, Misfire | Percent | 0 |
Air Fuel Ratio | Eng 1, Cat, HO2S | Ratio | 14.2:1 - 14.7:1 |
AIR Active Test AIR Injection | AIR | Yes/No | No |
AIR Active Test Inhibit | AIR | Yes/No | Yes |
AIR Active Test Passed | AIR | Yes/No | No |
AIR Passive Test 1 Fail | AIR | Yes/No | No |
AIR Passive Test 1 Pass | AIR | Yes/No | No |
AIR Passive Test 2 Fail | AIR | Yes/No | No |
AIR Passive Test In Progress | AIR | Yes/No | No |
AIR Passive Test Inhibit | AIR | Yes/No | No |
AIR Passive Test Passed | AIR | Yes/No | No |
AIR Pump Relay | AIR, Eng 1 | On/Off | Off |
AIR Pump Relay | AIR, ODD | OK/Fault/Invalid State | OK |
AIR Solenoid | AIR, Eng 1 | On/Off | Off |
AIR Solenoid | AIR, ODD | OK/Fault/Invalid State | OK |
BARO | Eng 1, 2, EGR, EVAP, Cat | kPa/Volts | 65-110 kPa / 3.5-4.5 volts |
Cam Signal Present | Misfire | Yes/No | Yes |
Commanded A/C | Eng 2, Cat, Misfire | On/Off | Off |
Commanded Fan 1/Commanded Fan 2 | Eng 2, Cat | On/Off | Off |
Commanded Gen | Eng 1 | On/Off | On |
Commanded Starter | Eng2 | Enabled/Disabled | Disabled |
Cruise | Eng 1 | Engaged/Disengaged | Disengaged |
Cruise Inhibit | ODD | OK/Stuck Low (open)/Stuck High/Fault | OK |
Cruise Inhibited | Eng 1 | Yes/No | Yes |
Current Gear | Eng 1 | Transmission Gear Position | 1 |
Cyl. 1-6 Injector Ckt. Status | ODD | OK/Stuck Low (open)/Stuck High | OK |
Decel Fuel Mode | Eng 1, 2, Cat, HO2S, Misfire | Active/Inactive | Inactive |
Desired EGR Position | Eng 1, 2, EGR, Misfire | Percent | 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 | Eng 1, 2, EGR, EVAP, Cat, HO2S, Misfire, AIR | °C/°F | Varies |
EGR Closed Val. Pintle | EGR | Volts | 0.14-1.0 |
EGR Duty Cycle | EGR | Percent | 0 |
EGR Feedback | EGR | Volts | 0.14-1.0 |
EGR Flow Test Count | EGR | Counts | 0-10 |
EGR Position Error | EGR | Percent | 0-9 |
Engine Load | Eng 1, 2, Cat, Misfire, AIR | Percent | 2-5 |
Engine Oil Level | Eng 2 | OK/Low | OK |
Engine Oil Life | Eng 2 | Volts | 0%-100% (varies) |
EOP sensor | Eng2 | Volts | 2 -3 volts |
Engine Run Time | Engine 1, 2, EVAP, Cat, AIR | Hr: Min: Sec | Varies |
Engine Speed | Eng 1, 2, EGR, EVAP, Cat, HO2S, Misfire, | RPM | Varies |
EVAP Canister Purge | AIR, EVAP, HO2S | Percent | Low and Varying |
EVAP Fault History | EVAP | No Fault/Excess Vacuum/Purge Valve Leak/Small Leak/Weak Vacuum | No Fault |
EVAP Purge Sol. | ODD | OK/Fault/Invalid State | OK |
EVAP Vent Sol. | EVAP | Open/Closed | Varies |
EVAP Vent Sol. | ODD | OK/Fault/Invalid State | OK |
Extended Travel Brake Switch | Eng 2 | Engaged/Released | Released |
FC Relay 1 | ODD | OK/Fault/Invalid State | OK |
FC Relay 2 and 3 | ODD | OK/Fault/Invalid State | OK |
Fuel Level | EVAP | Percent | 0-100 |
Fuel Pump | Eng 2 | On/Off | On |
Fuel Tank Pressure | EVAP | mm Hg/Volts | Varies |
Fuel Trim Cell | AIR, Eng 1, Misfire | 0-4 | 0 |
Fuel Trim Learn | Eng 1, Cat | Enabled/Disabled | Varies |
Generator PWM | Eng 2 | Percnet | Varies |
HO2S sensor 1 | Eng 1, HO2S | Ready/Not Ready | Ready |
HO2S sensor 1 | AIR, Eng 1, Cat, HO2S | millivolts | 0-1000 and Varying |
HO2S sensor 2 | Eng 1, Cat, HO2S | millivolts | 0-1000 and Varying |
HO2S XCounts | HO2S | Counts | Varies |
IAC Position | HO2S | Counts | 10 - 40 |
IAT | AIREng 1, 2, EVAP, Cat, HO2S | °C/°F | Varies |
Ignition 1 | AIR, Eng 1, 2, EGR, HO2S, | Volts | Varies |
Ignition Mode | Eng 2 | IC/Bypass | IC |
Injector Pulse Width | Eng 1, Cat | milliseconds | Varies (1.5-3.5) |
Knock Retard | Eng 2 | Percent | 0% |
Long Term Fuel Trim | AIR, Eng 1, Misfire | Percent | -10% - 10% |
Loop Status | AIR, Eng 1, Cat, HO2S, Misfire | Open/Closed | Closed |
MAF | AIR, Eng 1, 2, Cat, HO2S, | Grams per Second | 3-6 (depends on altitude) |
MAF frequency | Eng 1 | Hz | 1200-3000 (depends on altitude) |
MAP | Eng 1, 2, EGR, EVAP, | kPa/Volts | 20-48 kPa/0.75-2 Volts (depends on altitude) |
MIL | Eng 2 | On/Off | Off |
MIL | ODD | OK/Fault/Invalid State | OK |
Misfire Current Cyl. 1-6 | Misfire | Counts | 0 - 4 |
Misfire History Cyl. 1-6 | Misfire | Counts | 0 |
Misfiring Cylinder Prim. | Misfire | 0-6 | 0 |
Misfiring Cylinder Sec. | Misfire | 0-6 | 0 |
Power Enrichment | Eng 1, 2, Cat, HO2S, Misfire, | Active/Inactive | Inactive |
Rich/Lean | Eng 1 | Rich/Lean | Constantly Varying |
Short Term FT | AIR, Eng 1, Cat, Misfire | Percent | -10 -10 |
Spark | Eng 2 | Degrees | -20 (varies) |
Starter Enable Relay | ODD | OK/Fault/Invalid State | OK |
Start Up ECT | AIR, EVAP, HO2S | °C/°F | Varies |
Start Up IAT | AIR, EVAP, HO2S | °C/°F | Varies |
TCC Sol. | ODD | OK/Fault/Invalid State | OK |
Throttle At Idle | Eng 1 | Yes / No | Yes |
Total Misfire Current Count | Misfire | Counts | 0 |
Total Misfire Failures | Misfire | Counts | 0 |
Total Misfire Passes | Misfire | Counts | 0 |
TP angle | AIR, Eng 1, 2, EGR, Cat, HO2S, Misfire | Percent | 1-4 |
TP sensor | Eng 1 | Volts | 0.5-1.2 |
Traction Control | Eng 2 | Active/Inactive | Inactive |
Traction Control Desired Toque | Eng 2 | Percent | 100% |
Traction Control Torque | Eng 2 | Percent | 70% |
Transmission Range | Eng 2 | Transmission Gear Position | Park |
TR Switch P | Eng 2 | Low/High | Low |
TR Switch A | Eng 2 | Low/High | Low |
TR Switch B | Eng 2 | Low/High | High |
TR Switch C | Eng 2 | Low/High | High |
TWC Protection | Eng 1, 2, Cat, HO2S, Misfire | Active/Inactive | Inactive |
Vehicle Speed | Eng 1, 2, EGR, EVAP, Cat, Misfire | MPH/Km/h | 0 |
