Hi, My Wife has a 1984 and I have a 1985 Toyota Pickup, 2wd, 22R engine, same dash and almost same everything. There are 4 settings on the selector switch (horizontal lever switch moving from left-to-right) for the blower fan: “Off”, “Low”, “Med” & “High”. In both trucks, the “Low” setting for the BLOWER FANS quit working, but the other settings still work fine and amount heat-output is fine(so this is a FAN problem and not a “heating” problem).
Is the problem in the switch itself?, or in the blower fan resister?, or in the blower fan moter? From what I’ve read elsewhere, it seems to be a blower fan Resister problem that is most likely. If that is the case, where exactly should I be looking for it and will I need to remove the dashboard? And what does it look like? I’ve seen a small black object about 1"x 1.75"x 1.75" and it has an Amperage listing on it and it’s next to a Relay that seems to be related to the heater. I’m guessing that thing is not the resister if it’s labelled “Amperage”, I would think it should have an “Ohms” symbol or word or rating on it if it were the resistor, or is that really “it”.
Thanks - Paul