Gjac wrote:
Start by posting what make and model steps you have.
X2
Not to be an obnoxious loudmouth but, did you buy your rig new and/or did it come with a manual for the steps?
If it is a Kwikee step, the manual has a logical and systematic trouble shooting guide. It also has wiring schematics, illustrations of the various parts of the system. And some logical safety steps to be followed.
Kwikee steps use a current sensing circuit in the controller, this circuit senses when the steps have reached the limit of their travel and shuts off the power to the motor and reverses the current flow. Often(most) times when this current flow is interrupted, there is pressure on the linkage and the clevis pin can be very difficult to remove. Also a common problem is the pin is installed backwards and in some configurations this makes it difficult to remove the cotter key.
If you have a set of Kwikee steps and no manual, you will find a link to Kwikee Manual #888 on Chris Bryant's web site.
As far as the other brands of steps, I have no knowledge of them and not ever had any others than Kwikee, no need to know about them.
Hint: There are three(3) fuses called for in a Kwikee Model 32 step system with dash and door switches, not one. Frequently there are only two and the door switch is not fused. It is easier to check the power in using the trouble shooting guide rather than looking for the fuses in the beginning.
If there is a blown fuse, I would suggest replacing the blown fuse using the appropriate size fuse with a blown fuse indicator light in the fuse.
While using a VOM or DVM is often very helpful, while laying on your back under your rig with a probe in each hand and trying to touch the proper contact inside a wiring plug that is hanging loose and looking at the meter face is really a pita. A good test lamp with an alligator clamp and screwdriver looking probe with a light is faster and easier. Your looking for what is usually full battery voltage and even then a good probe will indicate that by the light in the probe being dimmer. There are also test leads with a 6, 12 and 24 volt DC indicator in the handle although those are more difficult to find and more expensive than a good auto mechanic's test probe.
If the motor is bad there are seven hundred, eighty three posts on that subject. It is easier to start a new thread than wade through all those posts.
Just MNTBHO.