Ask The Editors: Arctic Cat Non-Starting Help

Ask The Editors: Arctic Cat Non-Starting Help

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Arctic Cat ATV not starting - help
We think we know how to fix it.

Dear ATVC: Hello. I had my ATV being stored at a friends house where he performed a tune up and checked everything out. Well now I need it to get ready for winter plow and it won’t start . This is what he told me. there is an EFl code that says the crank position sensor is not reading. I ohm metered the sensor and it is within spec, the fuel pump also does not turn on unless direct power is put to it (then it pumps). I’m at a loss. I tripled checked all the fuses, I replaced relays I checked the power wire going to the crank sensor. It was only reading like 3 volts not sure if it’s the computer that’s bad, the wiring harness itself or what – I’m at a complete loss.

We cant say for certain whether 3 volts is correct at the crank sensor without knowing the year, make and model as Arctic Cat used both a Hall Effect Sensor (3-wire) system on some and the 2-wire Inductive Sensor on others. The good news from a diagnostic point of view is this could be the problem as in either case a steady 3 volts shouldn’t be the correct reading for either the 2 or 3 wire design.

Hall Effect: 0V to 5V

Power Feed: The sensor receives a steady 5V reference signal from the engine control module (ECM).

Signal Voltage (while cranking): When testing the signal wire with a voltmeter while cranking the engine, you might see an average reading of around 400 to 600 millivolts. The actual maximum voltage produced is 5V with the minimum near 0V (0.04V).

Inductive: 0.5V and 1.0V AC

Signal Voltage (while cranking): Between 0.5V and 1.0V AC on the multimeter.

Resistance Check: An additional test for an inductive sensor is to check its internal resistance (ohms). A common spec is between 200 to 1,000 ohms.

Either way this can almost always be fixed by replacing the Stator/Sensor Combo. On most Arctic Cats, the CKP sensor is integrated into the stator assembly. If the sensor fails, you simply replace the entire stator, getting two birds with one stone.

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