S175 blower motor wont spin. Heres what ive done
-Continuity between relay and b terminal on fan speed switch check out good
-relay has power
-both sides of fuse have power
-replaced fan speed switch (blower motor worked until i turned machine off and back on)
-blower is not seized can turn by hand through cabin filter
-12v not present at fan speed switch
-changed relay out with a known good relay
Does anything control the relay, that would cause it not to switch on, or should the relay click on with ignition? I dont know where to look after here.
Which relay pins can i jump to test relay circuit?
-Continuity between relay and b terminal on fan speed switch check out good
-relay has power
-both sides of fuse have power
-replaced fan speed switch (blower motor worked until i turned machine off and back on)
-blower is not seized can turn by hand through cabin filter
-12v not present at fan speed switch
-changed relay out with a known good relay
Does anything control the relay, that would cause it not to switch on, or should the relay click on with ignition? I dont know where to look after here.
Which relay pins can i jump to test relay circuit?
Last edited:
