2005 seadoo boat challenger 180

[yakloin]

I’m having trouble starting it. It wont start when I push the button but it starts when I jump the solenoid and shuts off when I push the button. I’ve already changed the solenoid.. thank you in advance

 

[MacSeaDoo]

I would guess it is either the ECU or the button if you have already changed the solenoid.

I say this because if it actually starts and runs when you jump the solenoid, the key has authenticated and the reed on the post has contact. Once this is satisfied, the start button power circuit is live for the button to be pressed. That button just puts 12V to the Solenoid, which then closes the starter circuit.

If the button works to stop the machine, I would have to think the start button works, but you could pull it out and check for 12V on the power side of it. If there is none with the Key on and the regular beeps, the ECU is not enabling the switch.

If you jump the solenoid without the key, the ECU does not light up power to the injectors so the machine will turn over but not start.

 

[Ajent]

Start simple. Check neutral switch!

 

[MacSeaDoo]

Good point, totally forgot about the neutral switch

 

[MacSeaDoo]

Further to this, I thought the neutral prevented a start but it appears it is just inline for the starter solenoid, so if it were bad you could jump the solenoid and start the boat.

This would explain your symptoms very well.

The neutral switch is closed when in neutral so if you pull the throttle and jump that connector and the boat starts with the button....

Or you could just test the continuity on it.