Electrical Resistance Testing

Learning with the 2018 Arctic Cat ZR 8000
2018 Arctic Cat ZR 8000
Trouble shooting is all what you know and if you’ve wanted to know how to test specific items on your new Arctic Cat 8000, then we have the electrifying answers for you here in a quick and easy lesson in testing the electrical components and helping you get it done on your own.
Today’s snowmobiles have more electrical features than ever. Between ignition, fuel pump, charge injection, lighting and more, there are any number of electrical gremlins that can rear their ugly head. Luckily for you, diagnosing an electrical problem is fairly easy, and can save you time and money at the dealership if you know how to do it yourself.

Here, we’ll look at a 2018 Arctic Cat ZR 8000, and show you how to test some of the more common electrical components. This is a pretty standard sled in Arctic Cat’s lineup this year so you can assume much of this will transfer over to most of the other new 800 C-TEC sleds.

■ Safety steps
1 Make sure vehicle is turned off, key removed, parking brake set.
2 Allow the sled time to cool down. Any built up heat may cause a faulty reading.
3 Battery should be disconnected. You’re simply testing circuit continuity.
4 Any component that does not test to specifications should be replaced.
5 If any component tests to be OK, but is still suspected to be the cause of the problem, check for continuity between the component and ground. If there is continuity, replace the component.

■ Tools for the job
A reliable multi-meter set to the OHMS scale. (photo A)
■ Step by step
1. Remove right side panel.
2. With the side panel removed (photo B), you’ll see a Velcro heatshield behind the muffler. Remove the heat shield to find the bundle of wiring and harnesses you’ll need to access. NOTE: Wires may be tied with a zip tie. It’s easiest to work with if you snip the zip tie, and re-secure when finished.
3. Disconnect the wiring harness that corresponds to the component you’d like to test. We’ll go over some common test scenarios here. If you don’t see what you need, you should be able to obtain instruction on proper testing methods and OHMS readings for your desired component from your Arctic Cat dealer.

■ Lighting Coil (photo C)
Harness: Three-prong white harness with two yellow wires and one black wire.
Test points: Touch the two meter leads to each of the yellow wires leading into the harness
Proper reading: 0.08-0.12 ohms
■ Fuel Pump Coil/Injection Coil (photo D)
Harness: Four-prong harness with two orange wires and two blue/white wires.
Test points: Touch the two meter leads to each orange wire to test the fuel pump coil. Touch the two meter leads to each blue/white wire to test the injection coil.
Proper reading: 1.52-2.28 ohms for fuel pump coil, 15.2-22.8 ohms for injection coil.

■ Ignition Timing
(photo E)
Harness: Two-prong harness with one green/white and one brown/green wire.
Test points: Touch the two meter leads to the sensor leads.
Proper reading: 148-222 ohms
■ Hi/Low Speed Charge Coils (photo F)
Harness: Three-prong black harness with one black/red wire, one green/red wire and one brown/white wire.
Test points: Touch the red meter lead to the black/red wire, then touch the black meter lead to the green/red wire to test coil one. Touch the red meter lead to the brown/white wire, then touch the black meter lead to the green/red wire to test coil two.
Proper reading: 8.8-13.2 ohms for both

Remember, when disconnecting and reconnecting the battery, connect the correct positive and negative sides. Even the best can forget or get distracted and find themselves with an exciting spark display.
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