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Impala horn horn not working

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Does the horn relay have power ?

Posted on Jul 13, 2013

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Posted on Jan 02, 2017

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1 Answer

How do I fix the horn on 2006 Impala


System Description
The horn PCB relay is non replaceable ,soldered to the underhood fuse / relay box. . You would have to take the box a part to get at it . Is the air bag light lit on the instrument cluster ? Could have an open wire in the Clock spring , do you know what a clock spring is ? It is inside the upper part of the steering column , It allows the steering wheel to be turned full right to full left keeping the horn an all the buttons an air bag connected electrically. When the horn button is pressed, ground is applied through the horn switch contacts and the horn relay control circuit to the coil side of the relay. The horn relay coil is then energized, causing the relay switch contacts to close applying voltage through the horn control circuit to the horns. For theft deterrent functions, the body control module (BCM) also controls the horn relay by applying ground to the relay control circuit to the relay.
Circuit/System Testing
With a test lamp connected to ground, probe each of the test points on the HORN fuse while activating the horns. The test lamp should illuminate at one or both of the fuse test points.
?‡'
If the test lamp does not illuminate at either test point, refer to the Horn Switch Test.


?‡'
If the test lamp illuminates, refer to the Horn Test.


Ignition OFF, disconnect the inline harness connector C275. Ignition ON, test for B+ between the horn relay control circuit terminal B and ground.
?‡'
If less than B+, test the control circuit for an open/high resistance. If the circuit tests normal, replace the underhood fuse block.

Momentarily connect a 3-A fused jumper wire between the control circuit terminal B and ground. The horns should work.
?‡'
If the horns do not work, replace the underhood fuse block.

If all circuits test normal, test or replace the horn switch

The PCB relay horn system consists of the following components:
?€¢
Horn switch

?€¢
Horn PCB relay

?€¢
Horn assembly

?€¢
Body control module (BCM)

?€¢
HORN fuse 15 A

How cars clock spring works

May 17, 2016 | 2006 Chevrolet Impala

1 Answer

04 Impala 3.8 horn blows low volume and sounds weird


sounds like the diaphragm in the horn is worn/dried out. check to see if you have battery voltage to the horn with either a test light or voltmeter and the horn has a good ground as if not then the horn won`t operate correctly. if these are good replace horn.

Aug 24, 2014 | 2004 Chevrolet Impala

2 Answers

Horn won't work


Check the horn fuse!

May 10, 2014 | 2004 Chevrolet Impala

1 Answer

2004 chevrolet impala horn stopped working


Check the circuit breaker/fuse first.

May 10, 2014 | 2004 Chevrolet Impala

1 Answer

Help me hook up my horn for my 03 Impala


For Chevrolet horn replacing and wiring details.Click the link below :----http://technoanswers.blogspot.in/2012/02/chevy-impala-horn-connections.html
--------------Thanks.

Jan 27, 2012 | 2003 Chevrolet Impala

1 Answer

I cant find the horn. it is not working as well, all my fuses are good. I do not know how to check the relays. 2004 chevy impala


Remove the plastic air deflector surrounding the hood latch assembly & disconnect the electical connector from the horn. Try a jumper wire to make sure it's the horn that's the problem. Check the horn relay also in the engine compartment fuse block cover. Good luck!

Mar 21, 2011 | 2004 Chevrolet Impala

1 Answer

Whats causing horn not to work on a 2004 impala?


horn is usualy located behind the grill pull the wire off the horn using a
test light have somone push the button + check wire for power if theres
power try using a jumper wire to put 12v to the horn if no toot bad horn
I should have said check fuse 1st but do that if no pwr at horn wire
if the fuse is good and the horn works with the jumper most likly the
horn button is bad. hope this helps good luck

Jan 15, 2010 | 2004 Chevrolet Impala

1 Answer

Car horn


make sure the horn is making a good ground on the frame

Jul 02, 2009 | 2004 Chevrolet Impala

2 Answers

The fuse for the horn


Pull the horn relay from the fuse box under the hood. They are all labeled. My horn was the same way. Good Luck!

Sep 18, 2008 | 2004 Chevrolet Impala

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