For 1990-2009 cars only
Ignition 1 Signal: The scan tool displays the current
voltage at the battery.
GEN L--Terminal Signal Command: The scan tool displays OK/No Voltage. The scan tool displays OK until malfunction is detected on the generator L terminal circuit, then it reads No Output.
GEN F--Terminal Signal (8.1L Only): The scan tool displays 0-100%. The scan tool displays 0-5% until the engine is running, then the percentage value varies depending on electrical loads.
GEN L--Terminal Signal Command: The scan tool displays OK/No Voltage. The scan tool displays OK until malfunction is detected on the generator L terminal circuit, then it reads No Output.
GEN F--Terminal Signal (8.1L Only): The scan tool displays 0-100%. The scan tool displays 0-5% until the engine is running, then the percentage value varies depending on electrical loads.
