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Power Strokes
6.4 Tech
Battery Light on and codes.
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[QUOTE="Wildman, post: 1268068, member: 18533"] The Instrument Cluster (IPC) will power down when voltage exceeds a predetermined threshold, which is typically 15.5V. So the IPC powering down is a symptom, and not anything to do with the root cause. Try starting the vehicle with the generator connector (3 pin) unplugged. When the generator does not receive a signal from the PCM, it should charge at 13.5V (default voltage). If the charging system voltage increases to 15-16V with the 3 pin connector unplugged, this indicates that the generator regulator is defective. The regulator is internal to the generator, and therefore requires generator replacement. [/QUOTE]
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