Typical Scan Tool Data (Gasoline)

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

GEN F-Terminal Signal - ECM

Circuit	Short to ground	Open	Short to voltage
Operating Conditions: Engine Running Parameter Normal Range: 5% to 99%
B+	0%	0%	-
Field Duty Cycle Signal	0%	0%	99%