FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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Lumina V6-3.1L VIN J
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Scan Tool Testing and Procedures
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Scan Tool Data, Normal Values and Definitions
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Scan Tool Data Definitions - Powertrain Systems
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Generator PWM
Generator PWM
Scan Tool Displays In Percents. The
PCM
Input Field (F) terminal from the alternator provides a PWM signal to the PCM.