Weird Power Lock Problem

[COramprat]

Yesterday when I went to start my car the batt was dead. I jump started it and my power lock actuators just started cycling over and over in the locking position. It continued while the car was running until I hit the switch in the unlock position and held it there. After a few seconds it stopped.

I drove to work and once I shut off the engine it started again. I can push the unlock button and it will stop but as soon as it is released the actuators start cycling again. I even removed the fuse but it still does it although the lock switch does not work. I have to hold up on the lock pin to keep it from locking and then it will stop but I now have to leave the doors unlocked. I have a feeling it may be the auto lock feature as you start the car but I have no idea how to check it. Anyone have any ideas?

 

[thebeastum]

as far as i know there is no auto lock feature on any fords.?

 

[COramprat]

as far as i know there is no auto lock feature on any fords.?

My car automatically locks when I hit the brake after start-up and is why I roll the window down if I leave the seat with the car running because sometimes it will lock. My Expedition auto locks when I put the brake on also.

 

[mrpositraction]

A lot of Fords have auto lock, my SHO does, my friends Thunderbird use to lock when you left the car running and got out. As for locking by themselves, I drove a peice of Sh*# grand am once and the locks would go crazy, ended up being a short in the door wiring. Good luck

 

[n0v8or]

If you have remote keyless entry, it could be the receiver or a stuck/shorted lock switch. Because it stops when you press the unlock switch, my money is on the switch.
The lock actuators keep turning on and off because they have internal thermal circuit breakers that self-reset after they cool down.
To remove power to the actuators, you have to remove the lock system circuit breaker in the fuse box. The fuse is only for the wireless remote receiver.

 

[COramprat]

OK...I have no remotes anymore. One got washed and my Wife lost the other. So the fuse only deactivates the remote system? I pulled the fuse that is for the remote trunk switch/power locks and it shuts down the trunk switch but the lock actuators will still cycle.

 

[n0v8or]

There is a separate circuit breaker for the lock actuators (which are actually small motors). The circuit breakers are larger than a fuse and usually have a metal case. They pull straight out just like a fuse.

 

[COramprat]

There is a separate circuit breaker for the lock actuators (which are actually small motors). The circuit breakers are larger than a fuse and usually have a metal case. They pull straight out just like a fuse.

That's what I removed from the circuit panel. It is a 20 amp aluminum encased fuse. I'm thinking it is either a switch problem or the control module. Any ideas where the module is located? Maybe part of the anti-theft system?

 

[n0v8or]

According to my Haynes manual, the control module is located somewhere in the trunk area, and has 31 different wires connected to it. There should be an identical circuit breaker for the power windows. You can tell if you removed the correct one if you replace the regular fuse and the trunk release still does not operate. The power lock circuit breaker also protects the trunk lock solenoid.

You are right . . . the anti-theft control module also is wired to the lock actuators.

 

[COramprat]

According to my Haynes manual, the control module is located somewhere in the trunk area, and has 31 different wires connected to it. There should be an identical circuit breaker for the power windows. You can tell if you removed the correct one if you replace the regular fuse and the trunk release still does not operate. The power lock circuit breaker also protects the trunk lock solenoid.

You are right . . . the anti-theft control module also is wired to the lock actuators.

Where did you find this in the Haynes? I looked but didn't see it.

When I removed the circuit breaker I checked to see if the remote trunk switch would work but it didn't so I have the right one. The reason I think it is the module is because nothing works when using the remote (I found the one my wife lost...it was under the seat lodged in the seat rail) I think this is what caused the problem. The remote was activated all night so it messed up the module somehow. Now if I can find the thing I may be able to figure something out.

 

[Kevin2811]

Go to Ford...they will (should) tell you how to reset. Simple fix.

 

[n0v8or]

The publication number on my Haynes manual is 36051, titled "Ford Mustang, 1994 thru 2000".
The wiring diagram is on page 12-34, and the keyless remote description is on page 12-14.

 

[COramprat]

The publication number on my Haynes manual is 36051, titled "Ford Mustang, 1994 thru 2000".
The wiring diagram is on page 12-34, and the keyless remote description is on page 12-14.

OK...I saw this part but thought maybe there was more of a description of the control module. I'm going to try and see if Ford will give me any info. They usually won't without bringing it in but I guess I can try. I might disconnect the battery and see if it will reset itself with out power. I think it is a shot in the dark but worth a try.
Anyone know where the anti-theft module is? I've looked around in the trunk but can only see the Mach 460 tray. Is it behind the cover for the stereo system?