How do you remove the horn

Check wirring for damage

If it's working, DON'T FIX IT! :) If it's locking the doors, flashing the lights, and beeping the horn... IT'S WORKING!

fuse 23 blown? is car battery discharged? (other symptoms not stated ?)
my guess is you can't see the horn, and the bolt?.
but can't reach it? that it?

That is correct. the relay is buried deep inside the TIPM where I only go...and others ,not shy...
im not so daft to replace a whole, TIPM for a bad relay or driver. for any horn... but you can....
it is your cash.
MP(49) schematic. is clear. as day.
well was before fixya blurred it.
(full)



1: is horn ground rusty? (look, examine...)
2: does 12vdc reach horn , honking (a voltmeter tells you this)
if #2 fails the PCM must be scanned to see why.
a must. scan it NOW.
B2336? B2338 (horn not grounded)
b2371 is shorted horn
like that?

if there is DTC that says the horn driver is bad, it is... end story. well, not doing the bad story.
and swapping in new TIPM.'
or reprogramming scrambled is dealer only fix.

my horn quit working on my 99 wrangler...took it to a shop...the part they changed was called a clock switch...very expensive part but it fixed the problem...part was supposedly dealer only part...horn works great now

You might need to take it in to a dealer to have the fob synched to the car. Is this in Canada , USA or some other country? Some counties have an immobilizer that can become confused if they lose power completley ... like from changing the battery.

The driver's Multiplex Control System is a small computer that controls (among many other things) the dash lights brightness, ignition key interlock, shift interlock, and has a tie in to the brake light system and horn relay. It may be that this small computer malfunctioned and started the whole problem chain.

However, I note from the factory shop manual that if polarity is reversed on the shift interlock--it can be damaged. Reverse polarity will ruin the diode inside the shift interlock. This could have happened when you jumped the battery--a brief period of getting the cables and terminals mixed up could have done it.

Checking the shift lock solenoid can be done by removing the steering column upper cover. Disconnect the shift lock solenoid connector (2 terminals). Using long jumper wires, apply battery voltage to terminal 1 (yellow wire side) of the solenoid and ground terminal 2 (green wire side). Check that the shift lever can now be moved out of Park. NOTE: applying voltage in the opposite direction of that above will damage the diode in the solenoid and will probably ruin it. Remove your jumpers and shift back to park and check that the solenoid locks. If the solenoid does not work properly, it will need to be replaced. This involves removing the end of the transmission shift cable and is a complex job. Remember, no power to the solenoid equals a locked solenoid--it takes power to unlock it.

The Multiplex Control Unit has a self diagnostic feature which checks the computer itself and inputs to the computer. The computer check is called mode 1 and the input test is mode 2. The diagnostic trouble codes are outputted to the ignition key light and beeper.

To test, first confirm that all fuses are good, especially fuse 9 (10A) in the driver's under dash fuse box (left kick panel) and fuse 13 (7.5A) in the passenger's under dash fuse box (right kick panel). Then use a jumper wire (a wire with small alligator clips on each end works best) to jump the two leads of the multiplex test connector. (This is a light green 2 terminal connector dangling from the same wire bundle as the brake pedal switch connector.) Buckle the driver's seat belt (avoids nuisance beeps). Now turn the ignition switch to on. After about 5 seconds, the ignition key light should come on and the beeper should beep for 2 seconds then stop for .2 sec. then beep once for .2 seconds. This indicates that the system is in diagnostic mode 1.

If no diagnostic trouble codes (DTC's) are present, the key light and beeper will not blink/beep again. If there are codes: about one second after entering mode 1, the key light and beeper will indicate the DTC and repeat it every 3 seconds. If there are more than one, the system will indicate them in ascending order. The codes will be a light flash and beep so you will have to count the flashes/beeps to keep track. The codes range from 1 to 6. Code 3 (three flashes/beeps) indicates a problem with the multiplex control unit itself. Write back here for other codes or for questions about mode 2.

start at the horn to see if it the wire is connected, then i would remove that wire and use a jumper wire from a positive(battery) to the horn itself and see if you get any sound. If the horn beeps then the horn itself is not the issue. check your horn fuse and relay. if you are getting power at the fuse and relay it is somewhere in the steering column. possible the horn pad itself or the horn cam. If you have have this in for repairs in the past dealing with the steering column it might not have been hooked back up properly. but then again how often do you use your horn it might have been not working for quite awhile. hope this helps.

TOOL NEEDED (1) DC test light or probe. TROUBLESHOOTING (1) generally a horn just has two wires positive and negative. Test negative by connecting dc test light negative to the negative on the back of the horn. use positive side of dc test light and touch a known positive connection. dc test light should light if not. find clean know ground for horn. Test positive by connecting neg side of dc test light to a know negative connection. use positive side of the dc test light and touch positive side of horn. test light should light up when you touch the horn switch. if dc test light does not light take a jumper wire and connect one side of jump wire to a known positive connection. take other side of jumper wire and lightly touch positive side of horn connection. horn should beep. if horn does not beep replace horn. if horn does beep test and or replace horn switch.

Most likely your alarm system needs reset. When you use the button to turn the alarm on and off the horn beeps and lights flash. Horn beep when switch turned on, makes sense would be in the alarm system with all you've told.

could just be the actual horn in the car..before i replaced it i would look for a loose wire on the aftermarket alarm though..