Use the scan tool data listed in this table for a comparison AFTER the Powertrain On-Board Diagnostic System Check and finding the On-Board Diagnostic System is functioning properly without any DTCs displayed. The typical scan tool data values are an average of display values recorded from normally operating vehicles. The typical scan tool data values are intended to represent what a normally functioning system would display. The values you get may vary due to a low battery charge or other reasons.
Do not use a scan tool that displays erroneous data. Report the problem to the manufacturer. The use of a malfunctioning scan tool can result in misdiagnosis and the unnecessary replacement of good parts. Use only the parameters listed in the tables for diagnosis. If all values are within the range illustrated, refer to Symptoms .
Scan Tool Parameter | Units Displayed | Typical Data Value | Reference |
|---|---|---|---|
A/C High Side Pressure | Volts | 0-5.0 Volts | PCM Controlled Air Conditioning Diagnosis |
A/C High Side Pressure | psi/kPa | 0-450 psi (varies with the refrigerant pressure) | PCM Controlled Air Conditioning Diagnosis |
A/C Relay | Off/On | Off (On with the A/C requested) | PCM Controlled Air Conditioning Diagnosis |
A/C Request | Yes/No | No (Yes with A/C ON) | PCM Controlled Air Conditioning Diagnosis |
Adaptive Knock Retard | Degrees | 0 | Information Sensors Description |
Air Pump Relay | ON/OFF | On (relay commanded on) Off (relay off) | DTC P0410 Secondary Air Injection (AIR) system |
Air/Fuel Ratio | Ratio | 14.6:1 (varies) | Fuel Metering Modes of Operation |
Another TWC test Desired? | Yes/No | Yes | -- |
BARO | kPa | 65-104 (varies with the altitude and barometric pressure). | Information Sensors Description |
Base PWM Cyl. 1-4 | mS | 1-4 varies | DTC P0300 Misfire Diagnosis |
Calc. Air Flow | g/s | Varies | Freeze Frame and O2S Information |
Calc. Converter Temp | °C/°F | Varies with the engine Load | DTC P0420 TWC System Diagnosis |
CKP Active Counter (7X Reference) | 0-255 Counts | 0-255 Increments while cranking or running | Information Sensors Description DTC P0335 CKP Sensor Circuit Performance |
CMP Active Counter | 0-255 Counts | 0-255 Increments while cranking or running | DTC P0341 and P0342 CMP Circuit Diagnosis |
CMP Resync Counter | 0-255 Counts | 0 | DTC P0341 and P0342 CMP Circuit Diagnosis |
Current TWC test Complete | Yes/No | -- | -- |
Cruise | Enabled/Disable | Disable | PCM Outputs Diagnosis |
Cruise | Engaged/Disengaged | Disengaged | PCM Outputs Diagnosis |
Desired Idle Speed | RPM | PCM commanded idle speed (varies with calibration) | Idle Air Control System Check |
ECT | °C/°F | 85°C-115°C/185°F- 239°F (varies with coolant temperature) | Information Sensors Description |
Engine Load | % | 11%-21% 16-29% at 2,500 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 | % | 0%-100% (varies) | EVAP Control System Description |
EVAP Vent Solenoid | Open/Closed | Open | EVAP Control System Description |
Fuel Alcohol Content | % | 0%-85% | DTC P0169, P0179, fuel trim and symptom based diagnostics |
Fuel Composition Sensor ON time | mS | 2 mS | DTC P0178 |
Fuel Composition Sensor Frequency | Hz | 52-120 Hz | DTC P0169, P0179, fuel trim and symptom based diagnostics |
Fuel Level | % | 0%-100% | DTC P0461, P0462, and P0463 Fuel Level System Diagnosis |
Fuel Pump Relay command | Yes/No | Yes | Fuel System Diagnosis |
Fuel Tank Pressure | mmHg/H2O | Depends on Pressure/Vacuum | DTC P0452, P0453, P0440, P0442, P0446 and P1441 Diagnosis |
Fuel Tank Pressure | Volts | Depends on Pressure/Vacuum | DTC P0452, P0453, P0440, P0442, P0446 and P1441 Diagnosis |
Fuel Temp | °C or °F | Ambient or above | Information only |
Fuel Trim Cell | Cell number | 18-21 at idle (varies with the air flow, RPM, P/N and A/C | DTC P0171 and P0172 Fuel Trim System Rich |
Fuel Trim Index | % | 58-198 (varies -100% to 100%) | DTC P0171 and P0172 Fuel Trim System Rich |
Generator L Terminal | Active/Inactive | Inactive | Engine Electrical |
HO2S 2 | mV | 0-1000, constantly varying | Information Sensors Description |
IAC Position | Counts | 5-60 | Idle Air Control System Check |
IAT | °C-°F | 10°-80°C (50°-176°F varies with under hood temperature) | Information Sensors Description |
Ignition 1 | Volts | 12.0-15.0 Volts (Varies) | DTC P0562 and P0563 System Voltage |
Knock Retard | Degrees | 0 | -- |
KS Active Counter | Counts | 0-2 | Knock Sensor System Description |
KS Noise Channel | Volts | Increments when knock is present | Knock Sensor System Description |
Lean/Rich Transition | 0-255 Counts | 0 | DTC P0133 and P1133 Diagnosis |
Lean/Rich Average Time | mS | 0 | DTC P0133 and P1133 Diagnosis |
Long Term FT | % | 58-198 (-100% to 100% varies) | DTC P0171 and P0172 Fuel Trim System Lean |
Loop Status | Open/Closed | Closed | DTC P0125 ECT Excessive Time to Closed Loop |
MAP | kPa | 25-48 kPa | Information Sensors Description |
MAP | Volts | 1-3 volts (varies with the vacuum and BARO pressure) | DTC P0105, P0107 and P0108 Diagnosis |
Medium Resolution Engine | 0-255 Counts | 0 | DTC P0335 Diagnosis |
Medium Resolution Resync | 0-255 Counts | 0 | DTC P0335 Diagnosis |
Misfire Current #1-#4 | 0-255 Counts | 0 (increase with a misfire) | DTCP0300-P0304 |
Misfire History #1-#4 | 0-255 Counts | 0 (increase with a misfire) | DTC P0300-P0304 |
Mileage Since First Failure | km | Varies | Freeze Frame Information |
Mileage Since Last Failure | km | Varies | Freeze Frame Information |
Number of Current DTCs | Number | 0 | Freeze Frame Information |
Number of DTCs | Number | 0 | All data lists |
Number of Catalyst Monitor tests | Number | -- | -- |
O2S 1 | mV | 1-1000 and varying | Information Sensors |
Power Enrichment | Active/Inactive | Inactive | Fuel Metering Modes of Operation |
Purge Learned Memory | Counts | 1.00 | DTC P0440, P0442, P0446 and P1441 Diagnosis |
Rich/Lean Transition | 0-255 Counts | 0 | DTC P0133 and P1133 Diagnosis |
Rich/Lean Average Time | mS | 0 | DTC P0133 and P1133 Diagnosis |
Rich/Lean to Lean/Rich | Ratio | Varies | DTC P0133 and P1133 Diagnosis |
Short Term FT | % | 58-198 (-100% to 100% varies) | DTC P0171 Fuel Trim System Lean |
Spark | Degrees | Varies | Information Sensors Description |
Startup ECT | °C (°F) | -- | -- |
Total Misfire Current Cylinder | 0-255 | 0 | DTC P0300 Engine Misfire Detected |
TP Angle | % | 0% (up to 100% at wide open throttle) | DTC P0105, P0122 and P0123 TP Sensor Circuit High Voltage |
TP Sensor | Volts | 0.200--0.900 volts (up to 5.0 volts at wide open throttle) | DTC P0105, P0122 and P0123 TP Sensor Circuit High Voltage Information Sensors Description |
Transmission Range | /Low/Drive 2/Drive 3/Overdrive/Reverse/Park/Neutral | Park/Neutral (Auto trans only) | Information Sensors Description |
TWC test stage 1 started | Yes/No | -- | -- |
TWC test stage 2 started | Yes/No | -- | -- |
TR Switch A B C P | Low/High | Low/Low/High/High | Information Sensors Description |
Vehicle Speed | Km/h/MPH | 0 | Automatic Transaxle Diagnosis |
