Scan Tool Data Definitions
WARNING: This page is about a different car, the 2003 GMC Safari and 2003 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
Ignition 1 Signal: The scan tool displays the current voltage at the battery.
GEN L-Terminal Signal Command: The scan tool displays OK/No Output. The scan tool displays OK until malfunction is detected on the generator L terminal circuit, then it reads No Output.
GEN F-Terminal Signal: The scan tool displays 0%-100% The scan tool display 0%-5% until the engine is running, then the percentage value varies depending on electrical loads.