Blower motor

[LEMHEAD16]

blower motor just quit working one day.

I've been working on diagnosing the problem but I'm stuck. Blower does not operate at any speed. Not getting any power to Blower motor connector.

I assume its not the resistor because it doesn't work at any speed.

If I jumper the fan with +12 it spins.

[Rev_D21]

Fuse?

[LEMHEAD16]

nope, checked both of those.

IT's a 93 hardbody BTW

[Rev_D21]

Sounds like broken wire somewhere.

[RT22]

getting power to the switch? maybe the switch is opened? Start at motor and trace back until you find 12 volts, that is only way to find where it is being lost

[LEMHEAD16]

Just in case anyone had a problem like this in the future.

Check for power going to the Blue wire at the blower motor harness. No power there indicates a short between the fuse panel and blower motor.

My problem was a loose wire at the back of the Fuse panel.

Thanks for every ones input.

[RT22]

Glad you found the problem. Old electronics teacher taught me the best way to find electrical stuff, divide and conquer. Start in middle of the circuit if it is good signal to that point half the system is eliminated, keep doing that until you find where signal is lost. fastest way to hunt down electrical problems, keep splitting the system in half.