For 1990-2009 cars

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in the alphabetical order.

Use the Engine Scan Tool Data List only after performing the following inspections:

• | A Diagnostic System Check-Engine Controls is completed.

• | No Diagnostic Trouble Codes (DTCs) are present.

• | On-board diagnostics are functioning properly.

The scan tool values from a correctly operating engine may be used for comparison with the engine you are diagnosing. The values listed in the following table represent typical values that would be seen on a good 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 .

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Engine Idling/Upper Radiator Hose Hot/Closed Throttle/Transmission in Park or Neutral/Closed Loop
A/C Relay Command | Engine Data | On/Off | Off
BARO | Engine Data | kPa | 89 99 kPa, varies with the barometric pressure and altitude
Battery Voltage | Engine Data | Volts | 13-14 Volts
Calculated IAC Air Flow | Engine Data | L/Min/FT3/Min | 155-220 L/Min/5.5-7.8 FT3/Min
Decel. Fuel Cutoff | Engine Data | Active/Inactive | Inactive
Desired Idle Speed | Engine Data | RPM | 750 RPM
Engine Speed | Engine Data | RPM | 700-800 RPM
ECT Sensor | Engine Data | C°/F° | 80-100°C/176-212°F
Engine Load | Engine Data | % | 2-10%
EVAP Density Trim | Engine Data | Counts | Varies
EVAP Purge Solenoid Command | Engine Data | % | 0%
EVAP Vent Solenoid Command | Engine Data | Not Venting/Venting | Venting
EGR Solenoid Command | Engine Data | % | 0%
Fan Request | Engine Data | Yes/No | No
Fuel Level Sensor | Engine Data | % | Varies with the fuel level
Fuel Pump Relay Command | Engine Data | On/Off | On
Fuel Tank Pressure Sensor | Engine Data | mmHg/in H2O | Varies
High Electrical Load | Engine Data | Yes/No | No
HO2S Bank 1 Sensor 1 | Engine Data | mV | 35-950 mV
HO2S Bank 1 Sensor 2 | Engine Data | mV | Varies
HO2S Bank 2 Sensor 1 | Engine Data | mV | 35-950 mV
HO2S Bank 2 Sensor 2 | Engine Data | mV | Varies
HO2S Bank 1 Sensor 1 | Engine Data | Not Ready/Ready | Ready
HO2S Bank 1 Sensor 2 | Engine Data | Not Ready/Ready | Varies
HO2S Bank 2 Sensor 1 | Engine Data | Not Ready/Ready | Ready
HO2S Bank 2 Sensor 2 | Engine Data | Not Ready/Ready | Varies
IAC Motor Command | Engine Data | % | 17-35%
IAT Sensor | Engine Data | C°/F° | Varies with the undehood and ambient temperature
Injector 1 Command | Engine Data | ms | 2.7-4.3 ms
Injector 2 Command | Engine Data | ms | 2.7-4.3 ms
Long Term FT Bank 1 | Engine Data | % | Around 0%
Long Term FT Bank 2 | Engine Data | % | Around 0%
Loop Status Bank 1 | Engine Data | Open/Closed | Closed Loop
Loop Status Bank 2 | Engine Data | Open/Closed | Closed Loop
MAF Sensor | Engine Data | g/s | 2.5-5.0 g/s
MAP Sensor | Engine Data | kPa | 26-51 kPa, varies with barometric pressure and altitude
MAP Sensor | Engine Data | Volts | 1.30-1.90 Volts, varies with barometric pressure and altitude
PNP Switch | Engine Data | Park/Neutral In Gear | Park/Neutral
Power Steering Switch | Engine Data | Normal/High Pressure | Normal with steering at straight ahead
Short Term FT Bank 1 | Engine Data | % | Around 0%
Short Term FT Bank 2 | Engine Data | % | Around 0%
Spark | Engine Data | degrees | 12-16°
Starter Switch | Engine Data | Released/Cranking | Released
TCC Brake Pedal Switch | Engine Data | Applied/Released | Applied
Total Fuel Trim Average Bank 1 | Fuel Trim Data | % | Varies
Total Fuel Trim Average Bank 2 | Fuel Trim Data | % | Varies
TP Sensor | Engine Data | Volts | 0.45-0.80 Volts
TP Sensor | Engine Data | % | 0%
Vehicle Speed Sensor | Engine Data | km/h/mph | 0 km/h