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L 130 Ignition test

6.9K views 12 replies 6 participants last post by  TobyU  
#1 ·
I have A John Deere L130, And I think the ignition switch is going bad.I would like to know if anyone knows how to test the switch with a volt meter. It's a 7 prong switch, with the letters A1,A2,B,M,S,G,L. Thanks for the help.
Russ
 
#4 ·
I'm sorry for being so vague. I try to start my mower and it does nothing. No clicking ,nothing. Tried jumping it, And still nothing. So I tried using a srewdriver to cross the terminals to the starter, And bingo it will roll over but not start. The key is in the run postion, so I figured the igntion switch may be bad. So I seen on youtube how to check your ignition switch buy using a volt meter and to touch the terminals on the back of the switch. Problem is on the video it is a 5 prong switch and my L130 has 7 prongs. I was wondering if anyone knew what prongs to test. For example with the key off test prong G to M, with key in run B to L. All I'm asking is i guess what is the a1 and a2 on the switch.
In hope this helps. Thanks again
Russ
 
#10 ·
Quit unplugging and plugging things. Lol
The seat switch won't keep it from starting IF the parking brake is on and the pto is off. This is of course assuming the PTO switch the brake and the seat switch are all working properly.
We know it will run now so we can rule out the ignition spark test that I was going to tell you to do first.
The l130s or maybe it's the la130s have a problem with the parking brake switch. It just presses into a little hole on the side of the frame and it gets loose and wiggles and the plunger doesn't get pressed all the way. So check that first.
 
#11 ·
The attached file is just the schematics for the L100 series. Print out pages 218 and 219. You are troubleshooting two separate problems. First is the ignition circuit and the other is the starter circuit. They are not related.

To get the starter spinning you need the PTO switch OFF, the brake switch fully depressed and the key in the start position. You can follow that circuit from the S terminal on the S1 Key Switch down to the S terminal on the solenoid. Now, if the brake is depressed or locked in the parking brake position, then perhaps the brake switch has popped off of its mounting tab. This happens occasionally and you have to snap it back in position. You can see the brake switch just inside the pedestal on the left side.

The other circuit you're troubleshooting is the ignition. For you to get spark, you need the magneto line (start at X9 on the right side, just above the magnetos) to be ungrounded. If it is grounded by any switch in its path (S1 key switch, S2 PTO switch, S3 Brake switch, K2 RIO latch relay, S5 Seat Switch or S6 RIO switch) then it may turn over, but it won't start.

Something is bothering me. You said that you disconnected the seat switch and it started. In a properly configured L130, that shouldn't happen. When the seat switch is disconnected a spring loaded shorting bar in the plug moves down and shorts wires 951 and 130 together providing a ground to the mags. IT JUST SHOULDN'T START!

I'll let you ponder the rest of the wiring, but I'd first go out and make sure the brake switch is mounted correctly. Here is a shot showing where it's mounted:
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And here is a closeup showing the rubberlike mounting ears that sometimes pop out of that slot in the bracket:
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Good luck,
Paul


EDIT: TobyU posted while I was preparing my post, but we essentially said the same thing. CHECK THE BRAKE SWITCH.
 

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