For 1990-2009 cars
Accessory Relay Command: The scan tool displays the state of the accessory relay command.
Battery Voltage Signal: The scan tool displays the vehicle voltage.
Ignition Mode Switch: The scan tool displays the ignition switch voltage signal. This signal is derived from the ignition Off/Run/Crank circuit.
Ignition Switch Accessory: The scan tool displays the state of the ignition switch accessory circuit.
Ignition Switch Run/Crank: The scan tool displays the state of the ignition switch Run/Crank circuit.
Key In Ignition Cylinder: The scan tool displays whether or not the key is in the ignition cylinder.
Power Mode: The scan tool displays the vehicle power mode.
Run Relay Command: The scan tool displays the state of the Run relay.
Run Crank Relay Command: The scan tool displays the state of the Run Crank relay.