For 1990-2009 cars

#### Typical Scan Tool Data Values

Scan Tool Parameter | Units Displayed | Typical Data Value | Reference
--- | --- | --- | ---
3X Crank Sensor | RPM | Same as engine speed | DTC P1374 3X Reference Circuit
24X Crank Sensor | RPM | Same as engine speed, up to 1600 RPM | DTC P0336 CKP Sensor Circuit Performance
Abuse Management | Active / Inactive | Inactive | Automatic Transaxle Diagnosis
A/C High Side | Volts | Varies with refrigerant temperature | PCM Controlled Air Conditioning Diagnosis
A/C Off For WOT | Yes / No | No | PCM Controlled Air Conditioning Diagnosis
A/C Pressure Disable | Yes / No | No (Yes with low or high A/C refrigerant pressure) | PCM Controlled Air Conditioning Diagnosis
A/C Request | Yes / No | No (Yes with A/C ON) | PCM Controlled Air Conditioning Diagnosis
Actual EGR Position | Percent | 0% | EGR System Description
Air/Fuel Ratio | Ratio | 14.2:1 - 14.7:1 | Fuel Metering Modes of Operation
BARO | Volts / kPa | 65 - 110 (Depends on altitude and barometric pressure). | Information Sensors Description
Brake Switch | Applied / Released | Released | Transaxle Diagnosis
Cam Signal Present | Yes / No | Yes | Information Sensors Description DTC P0341 CMP Sensor Circuit Performance
Commanded A/C | On / Off | Off (On with A/C requested) | PCM Controlled Air Conditioning Diagnosis
Commanded Fuel Pump | On / Off | On | Fuel Pump Relay Circuit Diagnosis
Commanded Gen | On / Off | On | DTC P0560 System Voltage
Cruise Mode | On / Off | Off | Information Sensors Description
Cruise Inhibited | Yes / No | Yes | DTC P1662 Cruise Control Inhibit Control Circuit
Current Gear | 1 / 2 /3 / 4 | 1 | Automatic Transaxle Diagnosis
Decel Fuel Mode | Active / Inactive | Inactive | Fuel Metering Modes of Operation
Desired EGR Position | Percent | 0% | EGR System Description
Desired Idle Speed | RPM | PCM commanded idle speed (varies with temperature). | Idle Air Control System Check
ECT | °C, °F | 85°C - 105°C / 185°F - 220°F (varies with temperature). | Information Sensors Description
EGR Closed Valve Pintle | Volts | 0.14-1.0 volt | EGR System Description
EGR Duty Cycle | Percent | 0% | EGR System Description
EGR Feedback | Volts | 0.14 - 1.0 volt | EGR System Description
EGR Position Error | Percent | 0% - 9% | EGR System Description
EGR Flow Test Count | Counts | 0 - 10 | EGR System Description
Engine Load | Percent | 2% - 5% at idle 7% - 10% at 2500 RPM | Engine Load
Engine Run Time | Hr: Min: Sec | Depends on time since startup. | Engine Run Time
Engine Speed | RPM | ±100 RPM from Desired Idle | Information Sensors Description Idle Air Control System Check
EVAP Canister Purge | Percent | 0% - 25% (varies) | EVAP Control System Description
EVAP Vent Solenoid | Open / Closed | EVAP Control System Description
Fans Low Speed/ Fans High Speed | On / Off | Off (On with low speed fans running) | Electric Cooling Fan Diagnosis
Fuel Trim Cell | Cell # | 0 | DTC P0172 Fuel Trim System Rich
Fuel Trim Learn | Disabled / Enabled | Enabled | Fuel Trim Learn
Generator Lamp | On / Off | Off | PCM Controlled Warning Lamps Description
HO2S Sensor 1 | Not Ready / Ready | Ready | Information Sensors Description
HO2S Sensor 1 | millivolts | 0 - 1000, constantly varying | Information Sensors Description
HO2S Sensor 2 | mIllivolts | 0 - 1000,varies | Information Sensors Description
HO2S XCount | Counts | Varies | --
Hot Mode | On / Off | Off | Transaxle Diagnosis
IAC Position | Counts | 10 - 40 | Idle Air Control System Check
IAT | °C, °F | Varies with ambient air temperature. | Information Sensors Description
Ignition 1 | Volts | 13 (Varies) | DTC P0560 System Voltage
Ignition Mode | IC/Bypass | IC with ICM controlling timing / Bypass with fixed timing | Electronic Ignition System Description
Injector Status | OK / Stuck High / Stuck Low | OK | DTC P0201-P0206 Injector Control Circuit
Injector Pulse Width | milliseconds | 1.5 - 3.5 (Varies with engine load) | Injector Pulse Width
Knock Retard | Degrees | 0° | Knock Sensor System Description
Long Term FT | Percent | -10% - 10% | DTC P0171 Fuel Trim System Lean
Loop Status | Open / Closed | Closed | DTC P0125 ECT Excessive Time to Closed Loop
Low Oil Lamp | On / Off | Off | PCM Controlled Warning Lamps Description
MAF | g/s | 4- 6 gm/s at idle 13 - 16 gm/s at 2500 RPM (Depends on engine load and barometric pressure) | Information Sensors Description
MAF Frequency | Hz | 1200 - 3000 (Depends on engine load and barometric pressure). | PCM Controlled Warning Lamps Description
MAP | kPa / Volts | 25 - 48 kPa / 1 - 2 Volts (Depends on engine load and barometric pressure). | Information Sensors Description
MIL | On / Off | Off | Powertrain OBD System Check
Total Misfire Failures | Counts | 0 | DTC P0300 OBD System Check
Misfire Current #1-#6 | Counts | 0 - 4 | DTC P0300 OBD System Check
Misfire History #1-#6 | Counts | 0 | DTC P0300 OBD System Check
Total Misfire Passes Si(nce First Fail) | Counts | 0 | DTC P0300 OBD System Check
Non-Volatile | Pass / Fail | Pass | --
Power Enrichment | Active / Inactive | Inactive | Fuel Metering Modes of Operation
Short Term FT | Percent | -10% - 10% | DTC P0171 Fuel Trim System Lean
Spark | Degrees | 20° (varies) | --
Start Up ECT | °C, °F | Depends on engine coolant temperature at time of startup | --
Start Up IAT | °C, °F | Depends on intake air temperature at time of startup | --
TCC Engaged | Engage/ Disengage | No | Transaxle Diagnosis
Total Misfire Current C(ount) | Counts | 0 - 5 | DTC P0300 Engine Misfire Detected
TP Angle | Percent | 0% | DTC P0123 TP Sensor Circuit High Voltage
TP Sensor | Volts | 0.20 - 0.74 | DTC P0123 TP Sensor Circuit High Voltage Information Sensors Description
Transmission Range | Park / Reverse / Neutral / Drive 4 / Drive 3 / Drive 2 / Low | Park | Information Sensors Description
TR Switch P A B C | Low / High | Low / Low / High / High | Information Sensors Description
TWC Protection | Active / Inactive | Inactive | Fuel Metering Modes of Operation
Vehicle Speed | MPH, Km/h | 0 | Automatic Transaxle Diagnosis
VTD Fuel Disable | Active / Inactive | Inactive | DTC P1626 DTC P1629