Yamaha engine tilt sensor

4str · 11 July 2008, 01:38

The tilt sensor on my Yamaha 150 HPDI quit working. I had taken it to the shop to fix a problem with the oil level sensor and part of the fix was to replace the instrument cable from the engine to the console. The next time I took the boat out I noticed that the tilt sensor (on the same instrument as the oil level indicator) didn't register.

I talked to the shop about it they suggested that I test the tilt sensor at the engine with an ohm meter. It shows variable resistance as the engine tilts. Since the problem showed up when a new cable was installed I also tested resistance where the cable plugs into the gauge. It also shows variable resistance as the engine tilts. I don't know what the resistance range should be, only that it varies with the tilt of the engine.

The gauge shows one bar on the tilt indicator with the engine up and down.

Anyone have any tips on what to do next? I don't want to take it back to the shop that had it last time. They charged me an arm and a leg and the quality of the work was poor.

shirehorse · 11 July 2008, 12:37

It may be a daft question but the trigger arm has'nt snapped off or turned around by any chance.

4str · 11 July 2008, 13:43

Thanks, I'll check that it is not turned. It does not feel broken, but I'll look at it with that in mind.

jyasaki · 11 July 2008, 22:21

If the resistance at the gauge changes as the motor goes up and down, then the sensor is likely OK. The manual for my F115 says (as nearly as I can tell) that the resistance range is 10-380 ohms.

If you have a couple of resistors, you could try jumping the pins on the gauge and ensure it works.

Other than that, I have no clue. Sounds like it *should* be working.

jky

4str · 12 July 2008, 02:47

Quote:

Originally Posted by jyasaki

If the resistance at the gauge changes as the motor goes up and down, then the sensor is likely OK. The manual for my F115 says (as nearly as I can tell) that the resistance range is 10-380 ohms.

If you have a couple of resistors, you could try jumping the pins on the gauge and ensure it works.

jky

Hey thanks, that helps a lot. I like the resistor idea.

4str · 09 August 2008, 00:31

Well, I couldn't fix it, so while the boat was in to get her hydraulic steering purged I asked them to take a look at the tilt gauge. Turned out a dip switch in the gauge was set improperly. That was it.

stepheneyre · 10 August 2008, 23:56

try this web site
it may help

http://www.yamaha-motor.com/outboard...px?ls=outboard

thanks
stephen