Where is...
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Joined: Jan 2008
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From: Conroe\Woodlands\Houston, Tx
Where is...
Where is the Horn on a 01 Reg Cab? Then i hit the horn button it doesn't work. I have checked relays and Fuses. I want to know if it is even there.. thanks
Chris
Chris
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Joined: Oct 2002
Posts: 7,295
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From: St. Louis (Out in the woods)
Right side (as viewed sitting in the driver's seat) radiator support. There should be two of them - a low note and a high note.
Check fuse F7 under the hood. Check to see if the relay (also in the same fuse box) is clicking when the horn pad is pressed.
If not, suspect a failed clockspring, especially if you have an airbag fault and/or cruise control failure, both of which also use the clockspring for electrical circuits.
Steve
Check fuse F7 under the hood. Check to see if the relay (also in the same fuse box) is clicking when the horn pad is pressed.
If not, suspect a failed clockspring, especially if you have an airbag fault and/or cruise control failure, both of which also use the clockspring for electrical circuits.
Steve
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Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
If you want to test power to the horn, bypassing the relay, pull relay 205 from the Battery Junction Box ( aka BJB, under hood fuse panel ) and jumper the normally open contacts with a piece of wire.
The pins to use ( with the red line ) :
If you want to test the clock spring function :
With relay 202 removed.
pin 1 should have +12 V DC at all times ( fuse 7 that Steve talked about ).
pin 2 is ground from the clock spring ( aka air bag sliding contact ).
- With a meter set to ohms or continuity, use a know good ground to pin 2 ( view looking t relay socket above ) with the horn not pressed there should be no continuity or infinity for ohms.
- Press the horn ( going to need help here ) and the meter should show low or 0 ohms / continuity. If so the clock spring is good ( test a few times/places to make sure it is not the foil layers in the airbag cover ).
If not some where between the clock spring and the relay, you are not getting the ground signal.
pin 3 is the same fuse ( 7 ), hot at all times
pin 5 is the output to the horns themselves ( 3 to 5 is what you should have jumpered above ).
possible causes ( not a complete list )
1. blown fuse in BJB Fuse 7 ( no power to relay coil or contacts )
2. faulty clock spring / foil layer on cover ( no ground to relay coil )
3. bad ground at horns ( test with jumper in relay socket )
4. connection problem for power to horns ( test with jumper in relay socket )
Sure I am missing some other options, but those are the big ones that come to mind right now.
Good luck
The pins to use ( with the red line ) :
If you want to test the clock spring function :
With relay 202 removed.
pin 1 should have +12 V DC at all times ( fuse 7 that Steve talked about ).
pin 2 is ground from the clock spring ( aka air bag sliding contact ).
- With a meter set to ohms or continuity, use a know good ground to pin 2 ( view looking t relay socket above ) with the horn not pressed there should be no continuity or infinity for ohms.
- Press the horn ( going to need help here ) and the meter should show low or 0 ohms / continuity. If so the clock spring is good ( test a few times/places to make sure it is not the foil layers in the airbag cover ).
If not some where between the clock spring and the relay, you are not getting the ground signal.
pin 3 is the same fuse ( 7 ), hot at all times
pin 5 is the output to the horns themselves ( 3 to 5 is what you should have jumpered above ).
possible causes ( not a complete list )
1. blown fuse in BJB Fuse 7 ( no power to relay coil or contacts )
2. faulty clock spring / foil layer on cover ( no ground to relay coil )
3. bad ground at horns ( test with jumper in relay socket )
4. connection problem for power to horns ( test with jumper in relay socket )
Sure I am missing some other options, but those are the big ones that come to mind right now.
Good luck