Dead man switch not working. - Snowblower Forum : Snow Blower Forums
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post #1 of 15 Old 01-11-2020, 05:58 PM Thread Starter
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Dead man switch not working.

Noticed today if I release the interlock lever that kills the motor when the attachment drive is engaged is not working. Motor stays running with the auger going. Never did that before.
The only thing I have done lately is replace the points, condensor, and coil. I think I have all the wiring okay. I removed the interlock switch and tested it on my DMM and it's fine.
I can still use the machine but don't like not having that safety devise not working.

There is a device on the right side of the case hooked up to all this called a Module T, can't find much info about it but I think it has something to do with a delayed shut-down for the kill switch. It's an $80 part so not something I'm going to replace unless absolutely necessary.

I'm trying to think where I might have gone wrong with the wiring when I had it apart. The ignition switch still works.
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post #2 of 15 Old 01-11-2020, 07:57 PM
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What model machine do you have ? I didn't realize that Ariens had a kill switch on the hand-grip area. Neither of mu Ariens have that.
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post #3 of 15 Old 01-11-2020, 11:46 PM
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Garage
6heres the diagram. Hope it helps. I believe I have several of those safety setups in a spare parts box here somewhere, if you want it I'll send it to you. No charge for parts, we can split the shipping.... believe it will fit into one of those small flat rate postage packages for like 10 bucks.




Ariens 24" 910962 7HP
Ariens 24" 924117 Modified Pro 342cc / 15.50 GT.. Currently Under Construction and testing trials commenced .......
Ariens 32" 924044 Modified Pro 342cc / 16.50 GT
Ariens / Troy Bilt 36" Frankenblower 16HP
~~ And Lastly ~~
Ariens 28" 924??? Double auger & impeller 14HP v-twin BEAST !!!
Plans are being drafted, parts are accumulating in the pile......
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post #4 of 15 Old 01-12-2020, 01:11 AM
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Quote:
Originally Posted by dcinma View Post
. . . I'm trying to think where I might have gone wrong with the wiring when I had it apart. The ignition switch still works.
Check that the white wire from the interlock cable (ref. no. 177) is connected to the proper location. Check that the connector to the Module T is making good contact and is not corroded. Check that the Module T case has a good ground (ref. no. 62). If the switch works, the interlock cable white wire is connected properly, the Module T ground is good, there are no broken wires and the connector is good, then the Module T is bad.

For the Module T wiring see this diagram
https://www.partstree.com/models/924...drive-train-0/

1986 Toro 524 (Predator 212 Hemi, Impeller Mod.)
1997 Toro 724
1997 Toro 824XL Power Throw

Last edited by toromike; 01-12-2020 at 01:14 AM.
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post #5 of 15 Old 01-12-2020, 10:29 AM Thread Starter
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It's a 924038 forgot to put that first.
If it is the module t, what does it actually do? Is there a work around that will let the interlock still function.
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post #6 of 15 Old 01-12-2020, 12:57 PM
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When the lever that has the interlock is in the engaged position (augers turning), is the interlock switch open or closed?

1986 Toro 524 (Predator 212 Hemi, Impeller Mod.)
1997 Toro 724
1997 Toro 824XL Power Throw
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post #7 of 15 Old 01-12-2020, 01:06 PM Thread Starter
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That I'll get back to you on. I Ave all the wiring apart now checking for continuity and cleaning connections.
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post #8 of 15 Old 01-12-2020, 02:51 PM
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You said you removed the interlock switch and tested it and it was ok. Test the switch while it is installed in the machine, disconnect the connector from the Module T and connect your meter to the two red wires on the connector that are attached to the switch and see if you can get the switch to change states while you operate the controls. There could be something wrong with the linkages that don't allow the switch to operate or there may be wear somewhere that prevents switch operation.

1986 Toro 524 (Predator 212 Hemi, Impeller Mod.)
1997 Toro 724
1997 Toro 824XL Power Throw
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post #9 of 15 Old 01-12-2020, 06:18 PM Thread Starter
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When the switch is pushed in it is "on", unpushed is "off".
I tested all connections for continuity, good.
Cleaned and re-did all connections.
Checked all the wiring according to the diagrams, good.
I tried checking the "module" with the diode function on my multi-meter but did not get any conclusive results. Some people say this module has diodes, or a combination of diodes and capacitors but no real information is available.

So I think it is the MODULE T. Must be a coincidence that the module died at the same time I replaced the points, coil, and condensor. (in a different post).
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post #10 of 15 Old 01-12-2020, 06:32 PM
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Make sure the mechanical mechanism in the machine is operating the switch properly. If the switch is operating properly, and the circuit checks out electrically, that points to the Module T as being bad. If you can take some resistance measurements of the Module T that would be of interest to me. Disconnect the connector to the module, set your DMM to resistance, clip one meter test lead to the ground connection, using the other meter test lead measure and record the resistance at the two yellow leads and the red lead at the connector.

1986 Toro 524 (Predator 212 Hemi, Impeller Mod.)
1997 Toro 724
1997 Toro 824XL Power Throw
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