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Home >> GMC >> 2004 >> Yukon/Denali 4WD V8-5.3L VIN T >> Repair and Diagnosis >> Starting and Charging >> Testing and Inspection >> Scan Tool Testing and Procedures >> Scan Tool Data Definitions
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Scan Tool Data Definitions

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.