For 1990-2009 cars

## Scan Tool Data List Except Holden

The Engine Control Module Scan Tool Data List contains all ECM 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 Control Module Scan Tool Data List only after the following is determined:

• | The Diagnostic System Check - Vehicle is completed.

• | No diagnostic trouble codes (DTCs) are present.

• | The 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 Control Module 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.

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.
Eng: Engine Data List
CH: Cooling/HVAC Data List
CC: Cruise Control Data List
EGR: Exhaust Gas Recirculation (EGR) Data List
ET: Electrical/Theft Data List
EA: Exhaust Aftertreatment Data List
Fuel: Fuel Data List
Induction: Induction Data List

#### Scan Tool Data List

Scan Tool Parameter | Data List | Units Displayed | Typical Data Value
--- | --- | --- | ---
Operating Conditions: Engine Idling/Lower Radiator Hose Hot/Closed Throttle/Park or Neutral/Accessories Off
5 Volt Reference 1, Reference 2, or Reference 3 Circuit Status | CH, EGR, EA, Fuel, Induction | OK/Fault | OK
A/C Disengage Reason | CH | Accel Rate/Acceleration/Coolant Temp/High Pressure/Invalid/Low Pressure/System Voltage | Invalid
A/C Refrigerant Pressure | CH | kPa/PSI | Varies
A/C Refrigerant Pressure | CH | Volts | Varies
A/C Relay Command | Eng, CH, EGR, Induction | ON/OFF | Off
A/C Request Signal | CH | Yes/No | No
A/C High Side Press. SW | CH | Normal/High Pressure | Normal
Alternator L Terminal | ET | ON/OFF | ON
Ambient Air Temperature Calculated | Eng | °C/°F | Varies
APP at Idle | Induction | No/Yes | Yes
APP Sensor 1 or Sensor 2 | Induction | Volts | Varies
APP Sensor 1 or Sensor 2 Indicated | Eng, CC, EGR, ET, EA, Fuel, Induction | % | Varies
APP Sensors | ET | % | Varies
Auto Learn Counter | ET | Counts | Varies
Aux Htr. Relay 1 Command | CH | ON/OFF | OFF
Aux Htr. Relay 2 and 3 Command | CH | ON/OFF | OFF
Aux Heater Request | CH | ON/OFF | OFF
BARO | Eng, EGR, EA, Fuel, Induction | kPa | Varies
BARO | Induction | Volts | Varies
Battery Voltage | All | Volts | Varies
Boost Pressure Sensor | Eng, Induction | kPa/PSI | Varies
Boost Pressure Sensor | Induction | Volts | Varies
Calculated Mass Air Flow | Induction | Grams/second | Varies
Clutch Pedal Switch (If Equipped) | CC, ET | Released/Applied | Applied
Cruise Control Active | Eng, CC | Yes/No | No
Cruise Disengage 1-6 History | CC | Reason | Varies
Cruise ON/OFF Switch | CC | ON/OFF | OFF
Cruise Release Brake Pedal Switch | Eng, CC, ET | Released/Applied | Released
Cruise Resume/Accel. Switch | CC | ON/OFF | OFF
Cruise Set/Coast Switch | CC | ON/OFF | OFF
Cylinder Air | Induction | mg/stk | Varies
Desired Boost | Induction | kPa | Varies
Desired Cylinder Air | Induction | mg/stk | Varies
Desired Fuel Rail Pressure | Fuel | kPa/PSI | Varies
Desired Idle Speed | Eng, CC, EA, Fuel, Induction | RPM | 700-800
Distance Since Last DPF Regeneration | EA | Miles/Km | Varies
Distance Since DPF Indicator ON without Regeneration | EA | Miles/Km | Varies
DPF Flow Calculated | EA | Liters/Hour | Varies
DPF Indicator Command | EA | ON/OFF | OFF
DPF Regen Command | EA | Counts | Varies
DPF Regen Flow Resistance | EA |  |
DPF Regeneration Inhibit | EA | Yes/No | No
DPF Regen Interrupted | EA | Yes/No | No
DPF Soot Mass | EA | Grams | Varies
ECM Authentication Status | ET | Valid/Invalid | Valid
ECM Challenge Status | ET | Valid/Invalid | Invalid
ECM Response Source | ET | Normal/Remote Start | Normal
ECT Sensor | All | °C/°F | Varies
ECT Sensor | ET | Volts | Varies
EGR Position Command | EGR, Induction | % | Varies
EGR Solenoid Command | Eng, EGR, Fuel | ON/OFF | OFF
EGT Sensor 1 or Sensor 2 | Eng, EA, Induction | °C/°F | Varies
EGT Sensor 1 or Sensor 2 | EA | Volts | Varies
Engine Load | Eng, CH, EGR, EA, Fuel, Induction | % | Varies
Engine Oil Level Switch | Eng, CC, ET, | OK/Low | OK
Engine Oil Pressure Switch | Eng, ET | OK/Low | OK
Engine Run Time | Eng , CH, CC, EGR, Fuel, Induction | Hrs/Mins/Sec | Varies with engine run time
Engine Speed | All | RPM | +/-50 RPM from desired
Fan Control 1, Control 2, or Control 3 Command | CH | ON/OFF | OFF
Fuel Heater Command | Fuel | ON/OFF | OFF
Fuel Level | Eng, EA, Fuel | % | Varies
Fuel Level Sensor Left Tank or Fuel Level Sensor Right Tank | Fuel | Volts | Varies
Fuel Pressure Regulator 1 | Eng, Fuel | mA | 1330
Fuel Pressure Regulator 2 | Eng, Fuel | mA | 525
Fuel Pressure Regulator 2 Command | Eng, Fuel | % | 20%
Fuel Pump Command | Eng, Fuel | % | 34%
Fuel Pump Relay | Eng, Fuel | ON/OFF | ON
Fuel Rail Pressure Sensor | Eng, Fuel | kPa/PSI | Varies
Fuel Rail Pressure Sensor | Fuel | Volts | Varies
Fuel Temperature Sensor | Eng, Fuel | °C/°F | Varies
Fuel Temperature Sensor | Fuel | Volts | Varies
GEN F Terminal Signal | ET | % | Varies
Glow Plug | Induction | % | Varies
Glow Plug Command | Eng, Induction | ON/OFF | OFF
Glow Plug Lamp Command | Induction | ON/OFF | OFF
IA Flow Valve Motor Command | EA, EGR, Induction | % | Varies
IAT Sensor 1 or Sensor 2 | Eng, CH, EGR, EA, Fuel, Induction | -39 to +140°C (-38 to +294°F) | Varies
Ignition 0 | Eng, ET | Active/Inactive | Active
Ignition 1 | Eng , CH, CC, ET, Fuel, Induction | Active/Inactive | Active
Immobilizer Programmed | ET | Yes/No | Yes
Immobilizer State | ET | Incorrect/No Comm/Negative/Post Release/Pre Release/Standby/Start Disable/Released | Released
MAF Sensor | Eng, EGR, EA, Fuel, Induction | g/s | 5-7
Main Injection Fuel Ratio | Eng, Fuel | mm³ | Varies
Main Injection Timing | Eng, Fuel | Degrees | 0 ± 3 degrees
MAP Sensor | Eng, EGR, EA, Fuel, Induction | kPa | Near BARO
MIL Command | Eng, EA, Fuel | ON/OFF | OFF
Particulate Filter Pressure Variance | EA | kPa/PSI | Varies
Particulate Filter Pressure Variance | EA | Volts | Varies
Pilot Injection Trim Average | Fuel | microseconds | Varies
Pilot Injection Trim Cyls 1-4 | Fuel | microseconds | Varies
PNP Switch (If Equipped) | Eng, ET | Park/ Net/ In Gear | Varies
Security Code Programmed | ET | Yes/No | Yes
Starter Relay Command | ET | ON/OFF | OFF
Stoplamp Pedal Switch | CC, ET | Applied/Released | Released
TC Vane Pos. Ctrl. Solenoid | Eng, Induction | % | Varies
Throttle Position | Eng, CC, EGR, EA, Fuel, Induction | % | Varies
Vehicle Speed | All | km/h/mph | 0 km/h (0 mph)
VTD Password Learn Enabled | ET | Yes/No | No
VTD security Code Accepted | ET | Yes/No | No
VTD security Code Lockout | ET | Active/Inactive | Active
Water In Fuel | Fuel | ON/OFF | OFF