Continuity across 9n solenoid

[robertIL]

I have a 9n that I'm troubleshooting an electrical short. I show 10 Ohms of continuity across my starter solenoid with everything disconnected. When I push the start button down, the resistance drops to zero which is what I expected. The solenoid only has two posts - (battery and starter) with an additional wire off of the battery post to the resistor. I've always thought this was a purely mechanical solenoid that shouldn't have any continuity until the button was pushed. Am I incorrect in assuming this and need to look elsewhere for my short? Should this be a completely open circuit between the posts until the starter button is pushed?

 

[M-MAN]

The neutral safety(starter button) completes the circuit ground to energize. Different than an automobile.

 

[robertIL]

The neutral safety(starter button) completes the circuit ground to energize. Different than an automobile.

Thank you. Does that mean I shouldn't have any continuity without the starter button engaged?

 

[Blue Jay]

I have a 9n that I'm troubleshooting an electrical short. I show 10 Ohms of continuity across my starter solenoid with everything disconnected. When I push the start button down, the resistance drops to zero which is what I expected. The solenoid only has two posts - (battery and starter) with an additional wire off of the battery post to the resistor. I've always thought this was a purely mechanical solenoid that shouldn't have any continuity until the button was pushed. Am I incorrect in assuming this and need to look elsewhere for my short.

Should not get a reading across the terminals as you stated it is just a mechanical switch no idea how you would see 10 Ohms. M-MAN is talking talking about an 8N not your 9N

 

[old]

Thank you. Does that mean I shouldn't have any continuity without the starter button engaged?

If your not pushing the starter button down you should get infinite ohms on a VOM or in other words an open circuit. When pushed down you should read zero ohms

 

[robertIL]

Problem appears to be solved. Thank you everyone.

 

[Sean in PA]

Did it solve itself or did you find the cause and fix it?

 

[wore out]

The neutral safety(starter button) completes the circuit ground to energize. Different than an automobile.

9N's do not have a starter solenoid.

 

[Btzj02]

I have a 9n that I'm troubleshooting an electrical short. I show 10 Ohms of continuity across my starter solenoid with everything disconnected. When I push the start button down, the resistance drops to zero which is what I expected. The solenoid only has two posts - (battery and starter) with an additional wire off of the battery post to the resistor. I've always thought this was a purely mechanical solenoid that shouldn't have any continuity until the button was pushed. Am I incorrect in assuming this and need to look elsewhere for my short? Should this be a completely open circuit between the posts until the starter button is pushed?

Be careful with Ohm readings and Continuity readings if you are testing things that are still mounted to the tractor. A Resistance or Continuity test can take a different path than you may think. Recently I was working on a tractor that had an instrument panel light that was wired to always be on if the ignition key was on. It took me a while to figure out that the indication of a ground on my ignition wire was actually the result of the lightbulb in the circuit. I do, now, vaguely remember the Instructor in Tech school warning of this issue when only relying on Continuity and Resistance when trouble shooting. Glad to see you have it figured out.

 

[robertIL]

Did it solve itself or did you find the cause and fix it?

The solenoid had a definite short in it. Testing a new solenoid showed no continuity, vs the old which showed the 10 ohms. Thanks.