Quote:
Originally Posted by hayhauler71
. Check voltage on the Gray/Black wire at the blower control module, check for 8 volts on high blower speed and about 2 volts on low speed .
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I checked the voltage on the gray/black wire here are the results:
with the knob all the way down 5.38 volts as I turned it up the voltage dropped to 1.34.
Does the fan need to be connected? It wasn't
Quote:
Originally Posted by hayhauler71
If it is OK, check the B+ on the Red wire and ground. Before replacing the blower module, amp draw the blower motor. The blower motor should draw less than 15 amps running on the Black wire. If all this is good, then the blower module needs to be replaced
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Not sure what the B+ is? I checked the voltage from the Red wire to ground and it was 11.95 and when I switched the knob it stayed the same.
I don't have an amp probe or amp meter to get the load amperage?