Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry your having this problem
do you know where the horn relay is in this Tracker ?
do you have a multi meter or test light on hand ?
yes it is open the glove box all the way and get to the horn relay
it should be second up from the bottom of the 4 relays the bottom one is the turn signal relay
once you find the horn relay when you push the horn switch do you feel that relay click with your fingers ?
pull that relay out and 2 of the 4 terminals that the relay plugs into should show 12 volts
2 solid greens should be 12 volts and the green/black should be a good ground
im sorry my mistake the 2 solid greens should be 12 volts
if they check out jump one of the solid green wires to the green/black wire terminal will the horn work when you do that ?
in the inside junction block is the fuse called STOP/Horn a 15 amp fuse blown ?
are you sure those 2 solid green wire terminals do not show 12 volts ?
and you are sure you are at the horn relay ?
it should have 2 solid green wires to the horn relay
ok if neither green shows 12 volts and that fuse is good then the issue is the green 2 wires from the fuse to the horn relay are broken or bad and it is best to just fun 2 new wires from that fuse to the horn relay
to be 100 % sure if you jump a power to the green/black wire terminal with the horn in the tracker will the horn work when you do jump it ?
what are you testing these wires with ?
a multi meter or test light ?
something just does not seem right like the test light is bad or not connected up correctly
with the horn plugged in and you add 12 volts to the green/black wire terminal it should send 12 volts to the horn
and also we are missing both powers from the dark green wires is odd also with the fuse good
if you jump 12 volts to the green/black wire and get to the horn will the green/black wire show 12 volts at the horn ?
can you confirm the test light good when the clip is connected to a good ground and you touch a power with the test light tip it lights up ?
if so retest those 2 solid green wires that the horn relay plugs into and confirm the test light clip is on a good ground
ok double check those 2 solid green wires for 12 volts
also jump the green/black wire terminal with 12 volts and see if at the horn it shows 12 volts when jumped
ok does the 2 dark green show 12 volts or not ?
so if both greens show 12 volts and you jump power at the green/black wire and the horn works then the last wire which should be a blue/green at the relay should show a ground when the horn switch is pushed
if it shows a ground when the horn switch is pushed the relay is bad
if it does NOT show a ground when the horn switch is pushed then this issue should be the horn switch under the air bag or the ground under the air bag for the horn switch is bad or broken and basically sends that ground out the switch to the horn relay as seen in this electrical schematic which is basically no ground is reaching the relay from the horn switch
if that wire is NOT a good ground when the horn switch is pressed you need to get to the ground under the air bad and see if the horn switches are sending out a ground when pushed
if that shows a ground all the time when the relay is in the horn would blast all the time
yes the terminals could be the problem
but from what you are telling me you tested the ground that is supposed to trigger the relay is not a good ground
you have both powers and if you jump the power out the horn wire the horn works
the issue is the relay bad or the terminals the relay plugs into or the ground from the horn switches
if the ground signal is going into the clock spring but not out the clock spring is bad
the horn contact goes through the clock spring the clock spring not only is for the air bag the horn is run though it also
if you can ground the horn wire out of the clock spring and the relay will activate and the horn will get 12 volts then the issue is the clock spring or the horn switches or the horn switch ground under the airbag
the air bad wires are different wires through it
who knows why the air bag wires are not being effected
but if you tested and the clock spring had a ground into it with the horn switch pushed but NO ground out of the clock spring then the clock spring is bad
yes put the relay back in and ground the horn wire out of the clock spring does the horn show 12 volts at it when you ground it ?
ok at the horn is it showing 12 volts at the green/black wire when the relay is activated ?
when that horn wire is jumped and the relay is working is the relay sending out 12 volts out the green/black wire ?
ok with a new relay is it working now ?
so if you ground the wire OUT of the clock spring and the horn will work and going into the clock spring it is showing a ground when you push the horn switch then the clock spring is bad
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the air bag uses different wires though the clock spring
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