General Horn not working
- Thread starter Ljevans86
- Start date
Currently reading:
General Horn not working
Fuse 10 onto relay 3 onto body computer onto steering wheel switch onto earth
Power comes from the relay contact to the horn and onto earth.
First place to check would be R3 swap for one of the others to test. Does it click.
Power comes from the relay contact to the horn and onto earth.
First place to check would be R3 swap for one of the others to test. Does it click.
Hi,
What year Panda?
Early models were just battery-fuse-switch-horn-earth modern ones have a computer in the middle which changes the fault finding approach.
Do you have a multimeter (voltmeter)?
Check the earth connection on horn.
Robert G8RPI.
You mean that the mate who checked the relay is not multi enough?
A cheap Multimeter will be perfect to measure the simple things
gr J
A cheap Multimeter will be perfect to measure the simple things
gr J
How did you check it was working ?
Does it activate when the horn is pressed. Click noise
Horn can be tested directly via the battery.
What voltage are you seeing at horn terminals..
Even a test bulb would help here.
I ONCE had a worn contactor in steering..
Spin steering wheel to one side and try again..
If it clicks most of its working
Fuse 10 is okays
Steering wheel switch is okay
Body computer wiring is okay
The problem is somewhere from the relay through the horn to earth
Internal contacts in the relay could still be faulty. Swap over the relay for a working one that's the same may be R2 main beam but check it's the same first. I haven't checked.
Plenty of video testing a car horn on YouTube
If all that's okay I only leaves a break in the purple wire or a poor earth.
humour us..
tell us what is happening at the "business end" , ( front of car..)
with the wheel "straight ahead".. and then at 90' around
in 35 used FIAT's I've seen all kinds of weirdness
Start at the horn.
The plug has two wires, one the feed, the other the earth. Earth is the black one.
When the horn is pressed, the feed wire should show battery voltage, a multimeter from there to a known good earth point will show if feed is ok, or a test bulb will do.
If feed ok, earth is suspect, so multimeter set to resistance or continuity, check earth wire to body of car.
If no feed, follow back along the route, so presumably back to relay.
Is battery voltage reaching the relay input, does it get out when the horn switch is closed?
Relay has feed and output, and two switching connections. You say it clicks, so that suggests that the horn switch works, so either the relay is not connecting internally, or there is a connection between there, the horn and earth. Electricity is simple stuff, just needs a circuit, so follow logically to find problem.
The plug has two wires, one the feed, the other the earth. Earth is the black one.
When the horn is pressed, the feed wire should show battery voltage, a multimeter from there to a known good earth point will show if feed is ok, or a test bulb will do.
If feed ok, earth is suspect, so multimeter set to resistance or continuity, check earth wire to body of car.
If no feed, follow back along the route, so presumably back to relay.
Is battery voltage reaching the relay input, does it get out when the horn switch is closed?
Relay has feed and output, and two switching connections. You say it clicks, so that suggests that the horn switch works, so either the relay is not connecting internally, or there is a connection between there, the horn and earth. Electricity is simple stuff, just needs a circuit, so follow logically to find problem.
Hi,
You could locate your horn, disconnect the wires to it, then run 2 wires back to your
battery positive and negative and see if it kicks into life. If it does work, it likely to
be an earth issue or the supply voltage from the relay to your horn. A multimeter as suggested would sort this out for you.
If it doesn't work its the horn that's your problem.
I notice you said you have clicking sound, this only means the solenoid
has energised, but your contacts within the relay could be making bad connection or none at all.
Again the multimeter would help you out here.
John.
You could locate your horn, disconnect the wires to it, then run 2 wires back to your
battery positive and negative and see if it kicks into life. If it does work, it likely to
be an earth issue or the supply voltage from the relay to your horn. A multimeter as suggested would sort this out for you.
If it doesn't work its the horn that's your problem.
I notice you said you have clicking sound, this only means the solenoid
has energised, but your contacts within the relay could be making bad connection or none at all.
Again the multimeter would help you out here.
John.
Last edited:
Hi,
This may help you out.
John.
This may help you out.
John.
Any progress?
OP
OP
Ljevans86
New member
- Joined
- Feb 23, 2018
- Messages
- 9
- Points
- 2
Will have another look when snows gone, I'll let u know, cheers for video mate.
Sent from my SM-J530F using FIAT Forum mobile app
Sent from my SM-J530F using FIAT Forum mobile app
