in my case the blower does not work only at level 1
there ground side switched
needs current flow for voltage measurement
at the switch they will all measure 12v expect the ground
As you switch each resistor in there will a voltage drop
so if you turn the switch to next to max one of the wires will drop to say 10V the rest will stay on 12V and ground. then the next position another will drop to 8v and so on
I made up the volts
if there is a voltage drop on one of the cables at minimum the problem will be the blower
if there isnt another voltage drop at minimum the problem will be the switch, cabling or resistor pack.
The resistor pack is air cooled and thermal protected. Its not the fuse thats gone otherwise it would only work on maximum
if the resistor pack has gone its nearly always due to the blower stalling. Leaves, parking ticket or the motor itself.
in this case the problem is more complex than simply changing the resistor
with this its a 10 minute job. I just did it for fun
just guide it straight onto the nut
i can't remember if its better to disconnect the connector First with two long bladed screwdrivers or leave it until its loose
Nice idea my flexi drive is not "that" flexi so will have to see what I can find.
For the OP find the heater fan motor and jump some power and earth direct from the battery. A length of check dual core flex will do nicely.
why jumper ?
everything is working except for the lowest setting
That's odd for a start. Full speed = no resistors.
The easiest way to test the motor is to unplug it and put power direct to it. It takes a few minutes and proves the motor is ok. The resistor or switch circuits can be tested with test meters in the normal way. But it's all pointless if the motor is faulty.
This sentence is not clear in its meaning. My first thoughts were that this meant that the fan only worked at the lowest setting.in my case the blower does not work only at level 1
everything is working except for the lowest setting
This sentence is not clear in its meaning. My first thoughts were that this meant that the fan only worked at the lowest setting.
However, I think koalar has interpreted it correctly, in that it works on 2, 3 & 4, but not the lowest setting. In that case, fan motor is fine, resistor is prime suspect.