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Never seen a resistor pack fail and it not likely it would take out all speeds. The blower controller is also pretty bullet-proof, but they do go bad.
From the drawing it also is plain that the PBC could be not telling the blower controller what to do. Fuses?
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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Last edited by stevebfl; 10-18-2004 at 05:13 PM.
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