hodneb

On start up the engine alarm goes off right away. Changed oil and filter, checked air filter. Has over 3/4 tank of fuel and alarm still goes off. What sensor do I check without hooking it up to a computer?

Ernest T

Are you getting an error code? Press the 2 buttons on the left side of the display for 8 seconds with the engine running or right after you shut it off and see if you get a code.

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2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100

hodneb

there is only 1 button , I tried to push and hold it for 8 seconds in it would not change anything . but he says it's for hour and voltmeter . engine light an alarm flashes immediately when starting.

Ernest T

If you only have 1 button on the port side that is the one to push. Press and hold for 8 seconds with the engine running. You should at least see a number on the display (01 is normal operation). Here is the page from the service manual:



If you can't get a code it will be difficult to tell the problem unless you take it to a dealer and let them hook it up to the computer. Most likely a bad sensor.

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2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100

hodneb

Where is the pickup coil located?

Ernest T

The pickup coil is part of the stator system. Its in the front bottom of the engine. You have to pull the engine out of the ski to get to it. Usually the ski will not start if there is a bad pickup coil. It can be tested with a multimeter by taking apart a coupler and inserting a test harness.

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2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100

hodneb

I appreciate all of your help, If it starts and runs fine, why would the pickup coil code come up? What would you recommend next to test? And if I need to test the pickup coil and it's working it will probably read okay? Do I have to have a test harness or can I just use multimeter?

hodneb

Ttt.......

Ernest T

Yours is the first I've every heard of with a problem with the pickup coil on this model ski, so the following may not be 100% accurate, but is how the system works from my understanding:

The pickup coil sends a signal that controls the timing of the spark, and to some extent the opening of the fuel injectors. The ECU has a circuit that will still send a signal to fire the spark plugs even if the pickup coil is not working properly. Therefore the ski may still run with a bad pickup coil, but the timing would not be optimal. Therefore, with a bad coil the ski may run, but I would not expect it to run optimally or efficiently. I also would not expect you to be able to reach maximum rpms (10000). If the coil were completely shot, I don't think you could start the engine.

My guess is that the ECU monitors the output voltage of the pickup coil, and if the voltages vary by more than a certain amount, you get an error code. It could be the first sign that the coil is going bad.

Testing the pickup coil requires the engine to be running as you check it at cranking at at various rpm levels to see if the output voltage is correct. The test harness plugs in between 2 connectors and allows you to monitor the output of the pickup coil while the engine is running. I guess you could do the same thing by stripping the wires from the pickup coil and put your multimeter on those, but you would need a service manual to find which wires to monitor.

My best advice would be to take it to a dealer and let them put it on a YDS computer. If it is a bad pickup coil, repairs could get expensive.

Good luck

__________________
2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100