Question about Toro LX423 20HP Lawn Tractor 13AX90RS848

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Wont start no power to switch

I'm not familiar with your brand and make of lawn tractor but here's a few basics many of them have in common.

Any one of several safety features on newer lawn tractors will prevent it from starting.

Assuming your battery is fully charged, here's a few basic things to check, depending upon your level of skill and motivation:

1. Parking brake: A switch must be engaged when the parking brake is set. Most newer lawn tractors have to have the brake set to allow the starter interlock relay to energize the starter.
2. Blade engagement PTO: The blade PTO switch or lever must be OFF or the tractor starter won't energize.
3. Seat switch: Some (not all) newer lawn tractors won't start if the operator presence seat switch is not closed. (you have to be sitting in the seat or the starter will not be energized.)
4.. Corroded/loose battery terminals or wires. Remove the battery leads and clean the terminals. Check and make certain the battery leads are tight.

You can do some investigative sleuthing by using a multimeter, set in the OHM position, to test switch continuity. Locate and unplug these switches from the wiring harness, one at a time. Insert the meter's test leads into the switch plug's terminals; not the wiring harness. Activate the switch. If your meter shows current pass-through or continuity, the switch is working. If the meter reads OL (for digital meters) or stays at zero, that switch is bad.

If your safety switches are good, you'll have to look deeper.
Some lawn tractors have a fuse panel to protect the electrical circuits and components.
1. If you have a fuse block on your tractor, remove the plastic cover. Most of the fuses in today's tractors are the color coded, plastic cased, automotive type. Remove each fuse and inspect their filaments one at a time. A blown fuse will be easily identified. Replace any blown fuse.
2. The starter interlock relay may be faulty, or have a disconnected/broken wire. Check your wires and terminals. The starter switch itself may be faulty. Use your meter in the OHM setting, put your leads on the starter switch terminals with the switch disconnected and off. Turn on the ignition switch and turn the switch to the start position. If the switch shows current pass-through, the switch is good. If not, replace it.
3. Is your battery discharged? Do you hear a "click" when you try to start your tractor? If you hear a "click" when you turn your key to the start position, and your battery is charged, there's a strong likelihood your starter has malfunctioned and needs to be replaced. (or your engine is seized) If you hear absolutely nothing while trying to crank over the engine, it's a safe bet you're not getting power to the starter because of a safety switch, bad fuse, starter interlock relay, or a broken/disconnected wire somewhere.

Sep 20, 2015 | Cub Cadet LTX 1042 KW 42" 18HP Kawasaki...

1 Answer

I need a close up picture of wiring harness for the john deere la130 riding lawn mower. or wiring harness diagram in COLOR. below is a picture of wires damaged. The wires i need to know where they connect...

I will get back to u asap with the photo and info. There is one sitting at the shop of a buddy who I help repair mowers. Try google or the john deer site too.

Nov 09, 2013 | Garden

1 Answer

Law tractor

it appears like we are working on what ever we see on the malfunction parts. Ok, simply fixing malfunctions is like carefully placing malfunction new parts on place soon after taking off broken locations. It is very simple, obersev that each part has appropiate similar installments.

May 11, 2013 | Garden

1 Answer


looking down at the terminals, rotate push-button to the right. the wiring sequence is R, W at the top, then Black (in, from power source) , Black (out, to motor).

Sep 27, 2009 | Black & Decker 19" Electric Lawnhog...

1 Answer

I have a John Deere lawn tractor Model # LTR166 that won't start and won't even turn over. I found a wrapped wire harness with a female plug - it has 2 purple and 2 white wires that is just dangling and I...

JD lx277 tractor problem would not start ...had starter checked it was ok ,,unplugged seat saftey still no start .ordered ignition module ...put on had to jump battery it Started ...ran couple minutes then proceeded to cut grass ran good for 10 min. then pto kept shutting off pulled up to garage and smelled something ..burning on new module ...could it have been bad or do i have another problem

Sep 23, 2009 | Garden

1 Answer

Wiring diagram to hook-up remote starter on 1996 dodge caravan

Constant 12V+ Red or Pink/Black - Ignition Switch Harness
Starter Yellow - Ignition Switch Harness
Ignition Dark Blue - Ignition Switch Harness
Ignition 2 Black/White - Ignition Switch Harness
Ignition 3 Dark Green/Red - Ignition Switch Harness
Accessory Black/Orange - Ignition Switch Harness
Tach Gray Or Blue/Tan PCM Coil 2.4 Liter - Engine
Neutral Safety Wire Black/White - Power Control Module
Brake Switch White/Tan - Brake Switch
Trunk Pin Tan/Black - 40 Pin Connector at Fuse Panel
Parking Lights Light Green/White (-) - Head Light Switch Harness left of Column
Head Lamp Green/Orange - Light Switch
Factory Disarm White/Dark Green - (665 Ohm) left Connector bottom of Fuse Panel
Door Trigger Brown/White (-) - Lower right Gray Connector at Fuse Panel
Door Lock White/Dark Green - BCM at Fuse Panel
Door Unlock White/Dark Green - White Connector B58 Connector
Horn Wire Black/Red - Steering Column
Windows Up LF=Light Green, RF=Brown/White, LR=Blue, RR=Gray
Windows Down LF=White, RF=Purple/White, LR=Red/White, RR=Dark Green

Your R/S instructions should tell you what goes where.

Thanks for using FixYa - a FixYa rating is appreciated!!

Jan 31, 2009 | Vehicle Parts & Accessories

3 Answers


the pic says the connection are not right.all left side connection are for brake which is the red & white wire. all right side connection are two black wire.

Feb 06, 2008 | Black & Decker 19" Electric Lawnhog...

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