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Help with missing engine data

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Old 03-12-2018, 09:02 AM
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Default Help with missing engine data

Hey guys, I wanted to see if I could get some help trouble shooting an engine data issue. It is likely to be something simple and stupid. I have 2016 df300s I purchased from you guys as part of the 35 Contender upgrade to 350s. The motors have about 700 hours, and were displaying data fine on the sea trial before pulling. I bought all new rigging from you and rigged the boat. Last week Friday, I brought it in for commissioning. At that time, the starboard motors wasn't reporting engine hours, but I wasn't too worried about it and the tech who did the computer hook up (I am terrible with names... sorry) didn't seem concerned either.

So, on the water, everything runs great, but I am getting no data at all from the starboard motor. Looking into the interface, both motors are self-selecting pre-2007 for the model year, and if I select 2015 (highest available) it defaults back to 2007 after I leave the configuration screen.

NMEA 2k network has a C-10, power supply, and the two engine interfaces on the Suzuki side of the network, and then the yellow power isolator, and then on the boat side of the network has two simrad NSS units, a Link 8 VHF, power, and an older Garmin MFD.

Both engine interfaces show on the nmea 2k network. RPMs show as zero, no dashes.

I have tried the following, one by one:

(1) autoselect source from the C-10
(2) update software on all of the network devices
(3) remove the power isolator and add a terminal resistor to create a Suzuki-only network
(4) unconfigure and reconfigure both interfaces
(5) swap the interfaces from port to starboard... port motor data only still came in, it just swapped over and got reported on the starboard side on the gauges. Still nothing from the port motor.
(6) I have also disconnected and reconnected every plug associated with the data network aspects of the engine harness to make sure it wasn't a bad connection.


So, it seems like the most likely culprit is that I missed something, somewhere on the starboard motor that is causing it to not report data correctly.

Less likely, that the adapter/splitter from the harness to the two network interface cables was bad out of the box, so it is not passing data to the engine interface

Less likely again, I think, is that something got damaged in the engine harness during the motor swap, so that it is not reporting data into the network but is otherwise working fine for digital controls.


If I am missing anything, let me know. The boat is on a lift in Pompano, so bringing it into the shop is possible but not at all easy. If at all possible I'd like to try to figure it out myself before the solo trailering and uber lifts it takes me to get back and forth to the ramp with both boat and trailer.

Last edited by Texas 17; 03-12-2018 at 12:11 PM.
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Old 03-12-2018, 09:04 AM
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I have named the motors since taking these pics. Also no change.








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Old 03-13-2018, 05:45 AM
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Don't worry about to trying to select the correct year and HP, these engines automatically set what it needs.
I would guess both engine interfaces are reading the port motor as this is the default from the factory or if you have some voltage issues they turn back to default. The other possibility is that the diagnostic plug under the cowling is disconnected, this is where the data comes from.
Have you looked in "network data sources" to see if it shows 2 engine interfaces.

You can call me while you're on the boat as well and I'll try to walk you through it.
Mike 954-695-6281
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Old 03-13-2018, 11:41 AM
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Mike, thanks for the help today. Turned out to be the adapter, swapping in the new one solved it for me. I guess it was just bad straight off the shelf.

I dropped off the bad part and the extra, new engine interface you gave me to test.
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Old 03-13-2018, 12:51 PM
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Originally Posted by Texas 17 View Post
Mike, thanks for the help today. Turned out to be the adapter, swapping in the new one solved it for me. I guess it was just bad straight off the shelf.

I dropped off the bad part and the extra, new engine interface you gave me to test.
Glad it worked out and was something simple. Your welcome.
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