Df225 & nmea

[Hambweld]

First let me say hello guys. I'm a nube here. Been hanging around the hull for a while, and since may I now own a Suzuki. Long story short I removed all the faria gauges, ran a nmea cable and hooked up a interface cable. I have a Suzuki water pressure sensor under the calan hooked up to a nmea T. And a pair of Suzuki digital gauges with a lowrance hds9 gen 3 in the dash. Went to run her tonight and it threw up a code. The right gauge kept saying "remote" and check keyless remote. WHAT THE HECK IS THIS??? Also the water pressure sensor is going haywire as well. Bounces from 0-30??? Help please????

[Moonlighter]

Ok, can we ask you to re-wind a bit please and give us some more info to go on?

So, I understand that you have ditched all you analogue gauges and replaced them with the SMIS gauges, can you confirm that this is correct? Where is the interface cable attached - behind the console to the engine harness, or to the SDS port on the engine?

That being the case, can you also confirm that the network has been operating correctly for at least some period of time, and that the current problems are new?

Or, is this the first time the network and engine have been turned on and you've now discovered these issues?

Is all other engine data appearing to be correct on the SMIS gauges and on the Lowrance? RPM, voltage, engine hours all showing up as expected??

Did you complete the setup process on either the Lowrance or the SMIS gauges - have the fuel tank size and engine location been set?

All this being done, my initial suspicion would be an error in the network wiring - and the most likely culprit would be a network device attached to the wrong part of a T piece. Easy mistake to do, done it myself more than once!

So suggest you double check all T pieces in your network to ensure that they ONLY have network devices plugged into the bottom part of the "leg" part of the T piece - I.e. When you look at the letter T, devices (such as the water pressure sensor) must only be plugged into the vertical leg of the T piece. Never into the cross T section.

Are terminating resistors fitted at both ends of the network as required? Check to make sure - this time it's the opposite of the previous - terminating resistors only go onto the top part of the T piece.

No T pieces should have any unused ports. If there is, then there's a mistake in the network wiring somewhere.

If you can answer these questions and come back to us, hopefully we can get you sorted out.

Cheers, and welcome to the forum!

[Hambweld]

All new gauges, backbone, lowrance as of 8 days ago. I drove 2 hours each way (today) to get to a Suzuki mechanic/dealer. He connected the interface cable and adapter cable to the engine. Under the console is 3 Garmin T with the end connected to power and the other end to the data cable going to the engine, and the 3 top spots are the 2 new gauges and the lowrance. The rpms,volts, temp all is working. Under the calan is 2 T connecters with a resistor on one end and the data cable on the other. The interface cable is next to the resistor and the pressure sensor on the other plug.The trim was working g at first then right when I got to the ramp the trim wouldn't read.

[Moonlighter]

Ok, so please confirm:

Under the engine cowl, 2 T's plugged into each other. Then, the interface is connected to the leg of one T, and the water pressure connected to the other T - is that correct?

Then a resistor on the end of the interface T, and a data cable from the water pressure T that runs up to the other set of T's up behind the console?

The above is how it should be. Please confirm.

Re the trim reading and then not, there are 2 plugs on the interface cable, one that connects to the SDS port on the engine, and one that connects to the trim plug. You should find the trim plug, and check that it is plugged firmly together. It may just be a loose plug on that one.

You didn't mention if the boat config had been done - tank size and locations set etc. can you confirm that?

I would also suggest that if this all checks out OK, then a phone call to the Suzuki mechanic who installed it all would be in order. You should expect and get some after sales support and problem solving assistance from them. If we get you to mess around much with this, other than doing some basic checks, we don't want him to have wriggle room to not fix things if there is more serious problem.

One thing I would definitely ask him is that if all the gauges are unplugged from the wiring loom behind the console, is that likely to set off the alarm that you mentioned. It seems possible, even likely, to me that the engine expects to detect signals coming from the console harness and that could easily be the reason that the alarm code is throwing. The more I think about that, the more likely I think it is.

Most, indeed nearly all installations of the network system where no analogue gauges are being used, requires that the interface is plugged into the harness behind the dash.

So your installation is not done the industry standard way, if that is the case. I am baffled as to why not. If the only reason is that the water pressure connector needs to be connected, that is not a good enough reason.

If it was me installing your network, I would NOT have the interface connected to the SDS port under the cowl, I would have it connected to the gauge harness behind the console. Under the cowl, I would then connect the main engine harness connector to the SDS port. This way, digital data, including trim, is sent to the harness behind the dash and allows the interface to sit up there where it is out of the heat of the engine bay. Done.

I would then run an extension cable from the water pressure sensor up to the console and connect it to a T there.

I think it is possible that we may have discovered the reason for the code. Run this idea past your Suzuki guy to see what he says. If he hasn't got a good answer, or has no other explaination for the code, then if it was me, I would be reinstalling the network as per my explaination above. I would bet that fixes it.

The only other think I can think of is if, in the process of removing the old gauges, he hasn't plugged something back in under the console. But if the engine starts and runs, that would seem unlikely. But maybe ask about that too.

[Hambweld]

Alright, I did what you said. The wps is ran from the motor to the console and connected to the T system. The interface is plugged to the ug under the console where the 2" o shit gauge was . don't know where to plug the 2 position plug to. I switched the plug in the fuse box and the gauges are reading. Now it says check engine 9-4 & 9-5. Then it says keyless unit battery low. ??????? help please.

[Moonlighter]

You don't need to plug the 2 pin interface plug (trim plug) into anything under the console. Trim data comes thru the main harness when the connection is done this way. You just need to reconnect the trim plug in the engine to the original harness plug, is all.

The error codes - I don't know! It is very hard to diagnose this without being able to see what's there. I could speculate about possibly something not connected correctly in the harness under the console, but really nothing is going to substitute for an inspection.

It could be completely unrelated to the interface installation. One thing to check is the main battery cables at the battery to make sure they are connected tight, are clear of corrosion, as these engines do demand a solid 12 v supply, so also make sure the batteries have a good charge and any main switches are good.

If this doesn't help or you can't figure it out, perhaps someone else here might have some suggestions, or you might be best to take it back to the dealer, painful as that may be.

[kinghappy]

Ok, can we ask you to re-wind a bit please and give us some more info to go on?

So, I understand that you have ditched all you analogue gauges and replaced them with the SMIS gauges, can you confirm that this is correct? Where is the interface cable attached - behind the console to the engine harness, or to the SDS port on the engine?

moonlighter,

you asked the op in this thread if his interface cable is attached behind the console or to the sds port . is there a way to hook up the interface in the dash and not under the cowling ?

just installed a nmea network everything hooked up but the engines , cant figure out how to route a nmea cable from the dash to the transom . if I can do it from under the dash that would be great .

p.s. have seen this Faria KTF033 cable but don't understand what it does . do u use it instead of the Suzuki interface cable for the df250 ?

[Moonlighter]

King - yes, there is a way to connect up behind the dash rather that to the SDS port on the engine - ON SOME MOTORS!

Please read the info paper i attached to the sticky thread on NMEA2000 networks at the top of this forum, it explains it all.

Ive never heard of that Faria cable. I doubt that it is a substitute for anything on the Suzuki network, let alone the interface cable which is the important item in the whole setup. Dont even attempt to use it is my advice.