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  1. G

    ADEM III ECM — No CAN Signal & Power Supply Issue

    I’m working on a Caterpillar ADEM III ECM that currently has no signal on the CAN bus (CAN_H and CAN_L). I suspect the problem is in the power supply section, specifically the UC3843B PWM controller, which may not be switching correctly. This IC controls the regulated 5 V rail that powers the...

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