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Home >> GMC >> 2003 >> Jimmy 4D Utility, 4WD, Part Time >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> Battery, Charging System & Starting System >> Diagnostic Information and Procedures >> Scan Tool Data Definitions
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Scan Tool Data Definitions

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 displays 0-5% until the engine is running, then the percentage value varies depending on electrical loads.