generator L terminal circuit

[1998 T/A]

Throwing a generator L terminal circuit code...not sure what it is could use some help

[SMWS6TA]

have you messed with the alternator or wire harness lately?

Gen L terminal for GM is the circuit that turns on and off the alternator when need be. It sends a source voltage signal from the pcm to the back of the alternator to the stator windings to fire up the alternator...thus a check in that circuit would be your first start..go down to the alternator and there's only one small wire in a connector on the back...and trace that wire...or u can power down and isolate the circuit and disconnect the pcm connector and check resistance from the wire at the alt to the wire at the pcm

[1998 T/A]

Haven't messed with the wiring harness at all or the alternator. Got it dyno tuned yesterday and that was one of the codes. I told the guy not to delete it and I'll trace the issue. I'll have to look tomorrow afternoon to see if the alternator is functioning proper or if I can find any loose wires

[1998 T/A]

Checked ground wires and they all seem ok. Maybe this is a sign the alternator is on its way out?