For 1990-2009 cars

Scan Tool Parameter | Units Displayed | Typical Data Value
--- | --- | ---
Operating Conditions: Ignition in RUN, Engine OFF, doors closed
Battery 1 | Volts | Varies
Driver Door Switch | Low/High | High
Ignition 1 Input | High/Low | High
Ignition 2 Input | High/Low | High
Ignition 3 Input | Active/Inactive | Active
Key In Ignition | Yes/No | Yes
Liftgate Ajar Switch | High/Low | High
Pass Door Switches | High/Low | High