Factory Alarm and Keyless entry | Ford Escort Owners Association (FEOA)

Factory Alarm and Keyless entry

Discussion in 'Safety & Security' started by ShakeZilla19, Jul 17, 2012.

  1. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    Im having some issues with my factory alarm system. It all started about a year ago. The horn switch, the pad in front of the airbag, became faulty causing the horn to sound constantly. Instead of buying a new airbag, since ford doesn't sell the switch separately, I got a push button switch. After I installed the switch the horn will not sound when the alarm goes off. It will chirp when a door is open, if it attempts to arm itself also when the panic button is pressed (but only intermittently).

    I tried diagnosing it today, with my factory service manual, and there is continuity from the relay to the RAP module. The horn circuit is fine, It will sound if I push the switch. The only thing I haven't checked is the ground, because everything else about the alarm is fine but the horn. I will look into it tomorrow though.

    On a side note the cigar socket has never worked in this car, It always blows the fuse or burns out the socket. I found in the service manual that the RAP module and cigar lighter SHARE THE SAME GROUND!!! 8O If that ground is the problem for both why would just the horn fail and not the whole system? And why would it happen now and not 10 years ago when the cigar lighter failed?

    Any thoughts or opinons would be great.
  2. Intuit

    Intuit FEOA Member

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    If the socket fuse blows and the socket has been replaced, then there is a short somewhere. If a prior idgit at any point, put in a higher rated fuse then you have a fused wire harness somewhere. Wire gets hot enough to burn through it's insulation and short against other wires, circuits. (yikes!!)

    Since they might at some point, share a wire bundle/harness, and it's a very simple circuit, I would troubleshoot that socket circuit first, in hopes of bumping into the solution for the horn circuit.

    But the horn circuit is pretty simple too. Don't know about factory systems, but most aftermarket systems simply ground the horn relay if they want to blow the horn.

    But it sounds like there's more going wrong with the alarm than just the horn. So you might check the alarm module's grounding and connection to horn relay. If the horn switch doesn't work or work right, the issue could be in the steering wheel itself. Because of flexing and shorting, manufacturers don't use wiring to connect steering wheel components to the steering column. They use some some special mechanism, probably contacts sliding in a guide; which I don't know what to call...
  3. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    Well, I have the found the issue to both. The cigar lighter was unplugged...I reconnected it and it works perfect but the connection is very loose (perhaps the socket never burned out just simply disconnected). This car was my parent's, they bought it new, then passed it to me.

    About the alarm's horn. I checked the horn relay to the module which checked out. checked ground to the module which checked out. I then moved to the steering wheel and found the problem. The clock spring, which is what you metioned, is pulling crazy high resistance. It also seems to be leaking grease everywhere on the steering column. I don't understand why everything else on the steering wheel works, If the clockspring is bad. :shrug:
  4. Intuit

    Intuit FEOA Member

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    Probably automatic transmission fluid. When manual transmissions are overfilled and/or the speedsensor's seal blows/fails, transmission fluid gets pushed into the passenger compartment via speedometer cable.
  5. madmatt2024

    madmatt2024 FEOA Member

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    3rd gens don't have a speedometer cable.
  6. Intuit

    Intuit FEOA Member

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    Oh. Good catch.
  7. ShakeZilla19

    ShakeZilla19 My name is ^^^

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    It looks and feels like dielectric grease. I replaced the battery and most of the issue is gone. Occasionally, the arming beep will be weak but when the alarm goes off it is very loud.

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