| Re: Dash air/heat Blower Not Working - Blowing Fuses [message #371296 is a reply to message #371291] |
Mon, 24 April 2023 08:23   |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma:
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Senior Member |
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It’s also easy enough to pull the relay and bench test. With relay out, run your controls through the ranges (engine on or key on) and see if you still blow the fuse. If no then wiring should be good. You can inspect/ bench test the relay while out. If water gets in there they can corrode and chunks short out. Some clip leads and 12V to the relay coil and the NC and NO contacts should alternate with no power/power applied to coil.
Another quick check is to inspect the speed resistor bank module. They, like headlamps, CAN fail in odd ways and bridge weld the windings across the leads. That COULD apply near full 12V to the motor through the low speeds wiring for which it is not designed or fused.
John Lebetski
Woodstock, IL
77 Eleganza II
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