Ok I removed the htr. blower motor after testing the switch and connections. I can now see the resister, is resister failure a common problem? I was thinking about testing the blwr. motor using a car battery to see if it would pwr. up. Is there a safer test that I can perform? I just don't want to kill the motor if it's not the problem! Any idea how I can test the resister? Please help! This is the only problem I've had w/ testing so far. I lack this knowledge...grrrrrr

 

Sure you can run a set of jumper wires from a 12 volt source to test the blower motor-that's what happens when the control switch is in the high position. First, check fuse number 18 in the underhood fuse box and fuse 8 in the underdash box. Next check to see if the blower relay clicks when you turn the ignition on. This is a ground controled circuit, so the switch is the path to ground. Even if the blower resister is toast, you should still have blower operation at the highest position. do you have a multimeter or at least a test light? Turn the ignition on, disconnect the wire harness at the blower motor and check for battery votage between the yellow/black wire and body ground.(switch is set to high) If there's no juice there, back track to the blue/red wire between the fan switch and blower motor. Still no battery voltage, id say you have a problem with the switch. I hope this kinda helps. pm if you have questions or need clarification.

 

Hey jfastman thanks for the pointers! I tested the voltage on each switch setting @ the motor and they were all good. All fuses and relays were fine also so I removed the motor and tested it using the red/blue as a pos. (+) and the yel/blk as neg. (-) the motor tried one last time to operate but then failed. I found a used blower motor locally for $45, installed it and all is great. Thanks again!

Jake

 

Awesome! I'm glad I could help!

 

I am having this same trouble with my 1994 Accord. I followed your steps and narrowed it down to the switch. Or rather, the switch is not getting power. I have learned a lot from reading over these forums and with the manuals it's all starting to come together!

(yes, I know this is old but I still wanted to say thanx!)