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HondaPlatinum
HondaPlatinum, A Technician
Category: Honda
Satisfied Customers: 11332
Experience:  13 year honda platinum level
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My cooling fan fuse keeps blowing everytime i turn the

Customer Question

hi my cooling fan fuse keeps blowing everytime i turn the ignition on(95 honda accord v6), even after bypassing the thermostat and fan switch...the condenser fan is working but the cooling fan isn't. i checked the fans and they are good, i can't find anything wrong(pinched or melted) with any of the wiring anywhere. i have had 2 other people look at it and we're all stumped
Submitted: 1 year ago.
Category: Honda
Expert:  Tim Mohr replied 1 year ago.
Hi, my name is ***** ***** you disconnect the fan , and install a new fuse, does the fuse still blow, with the fan disconnected?
Customer: replied 1 year ago.
Customer: replied 1 year ago.
as soon as i turn the ignition on it blows
Expert:  Tim Mohr replied 1 year ago.
ok, can you remove the cooling fan relay and see if the fuse still bows with the relay out?
Customer: replied 1 year ago.
i only have one fuse left to use...i bought the store out so i gotta be careful right now
Customer: replied 1 year ago.
what else can i try
Customer: replied 1 year ago.
i did switch the relay with another and it seems to be working fine
Expert:  Tim Mohr replied 1 year ago.
in order to trace it out, we need to see if it blows witht the relay out, this could takes a few fuses to do, even if you swapped relays, we need to see where the short starts,Tim
Customer: replied 1 year ago.
ok so just pulled the relay out, replaced the fuse and it didn't blow...so whats that mean?
Expert:  Tim Mohr replied 1 year ago.
Is it the fuse 21 in the fuse box under the hood?
Customer: replied 1 year ago.
iyes
Expert:  Tim Mohr replied 1 year ago.
ok, do you have a volt meter or test light?
Customer: replied 1 year ago.
i can get one but not right this minute it'd be about 10 or 15 minuts
Expert:  Tim Mohr replied 1 year ago.
thats fine, I will be here, a test light would be best,Tim
Customer: replied 1 year ago.
what do i do with it when i get it
Expert:  Tim Mohr replied 1 year ago.
you will need to disconnect the fan motor and see if there is a ground on the blue/black wire at the fan motor connector?
Customer: replied 1 year ago.
on the fan side or coming from the fuse box?
Expert:  Tim Mohr replied 1 year ago.
the side going to the fuse block
Customer: replied 1 year ago.
ok will be right back
Expert:  Tim Mohr replied 1 year ago.
let me know,Tim
Customer: replied 1 year ago.
i got the voltometer but it has alot of different settings and ive never use one before...so which one is supposed to be set on?
Expert:  Tim Mohr replied 1 year ago.
you put the meter on V for volts, then attach the black lead of the meter to the positive battery termonal, and then probe the blu/black wire at the fan motor and see if it reads around 12 volts, or is it zero?
Customer: replied 1 year ago.
its reading about 4-5 volts and i checked the A/C fan(the one that is working)and its giving me the same reading
Expert:  Tim Mohr replied 1 year ago.
which V do you have the meter on?
Customer: replied 1 year ago.
i tried it on both of the first to settings
Expert:  Tim Mohr replied 1 year ago.
this would alot easier with a cheap 12 volt test light, can you get one, they run under 10 dollars t any parts store?
Customer: replied 1 year ago.
ok do we want ac voltage or dc voltage?
Expert:  Tim Mohr replied 1 year ago.
DC
Customer: replied 1 year ago.
ok now that ive figured that out what am i supposed to do to test it
Expert:  Tim Mohr replied 1 year ago.
put the blacl mlead of the meter on the POSITIVE battery cable, then probe the blue/black wire with the red lead of the meter and see what it read?
Customer: replied 1 year ago.
it is reading about 140.0 mV
Expert:  Tim Mohr replied 1 year ago.
ok, now take the red lead and touch it to any metal part on the engine and tell me what the meter says?
Customer: replied 1 year ago.
it reads 0
Expert:  Tim Mohr replied 1 year ago.
then you dont have the leads connected correctly, the black lead has to be on the positive battery terminal, and then touch any metal part, it should read about 12 volts,Tim
Customer: replied 1 year ago.
OK it is reading 12
Customer: replied 1 year ago.
I did what you said with the fans and they're both reading 12 volts

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