Command Link gateway to display Yamaha engine data on MFD stopped working

[Yamaha18]

Unbelievable. My dealer told me MY outbound ECU was sending engine data to motor #3, so they reset it to #1 and it worked. Gauge starts to display engine data.

i am fighting with Yamaha Warranty for the 2 hours labor ($270) my dealer charge me.

I have a small 17 feet boat with only ONE outboard, never had 3 motors on my tiny boat so the ECU is at fault here!

unbelievable!!!

[Yamaha18]

my 2019 Yamaha 70 hp is working properly, so will have to ask dealership to check th 6YG-8A2D0-00-00 gateway.

QUOTE=panasonic;n220936]The ECU is on the test machine now....the Engine. If the the engine is running properly , then the ECU is working fine.[/QUOTE]

[panasonic]

The ECU is on the test machine now....the Engine. If the the engine is running properly , then the ECU is working fine.

[99yam40]

I have not heard of anyone hooking 24V up to a 12 v system like this before, so

I really have no idea how to check things out

[Yamaha18]

Oh Oh, I am not 100% certain that I disconnected 1 of my 24 volts battery to get 12 volts to start my engine.
I think I did but unsure.

How do I check whether I ruined the ECM on the F70?

Please help and thanks.,


QUOTE=99yam40;n220925]I really did not understand what you wrote, but if you put 24volts to the F70 motor, there could be damage to all sorts of things[/QUOTE]

[Yamaha18]

ok, I finally got around to test and good news i have 60 ohm by connecting my multi-meter to the blue wire and white wire of the CL multi-hub with key switch for power to CL multi-hub to off position and with NEMA2k backbone connected to my Raymarine Axiom also power off. So my NEMA2000 and CL are properly connected. Yes the 6YG-8A2D0-00 is also connected when doing my ohm test.

so, the only problem is the 6YG-8A2D0-00 i am going to ship it back to headquarter for a repair or replacement.

thanks a million for your help. I will post a video soon.

Yamaha 'Command Link' is essentially NMEA 2000
so four conductors:
red=12V+,
black=ground,
and the blue and the white are the data wires.

The wiring for NMEA 2000/Command Link,
when properly configured,
is arranged in a "backbone" - with,
at each end, the white and the blue wires connected via a 120 ohm resistor
like so:




as far as testing 'data wires'
with all the devices 'off',
you should have:
- continuity between all whites,
- continuity between all blues,
- a 60 ohm resistance between white and blue, anywhere


By the way -
I didn't see what Yamaha model you are working with;
but, although Yamaha 'assumes' you will use their Gateway -
if the engine is 'mechanical control' -
NOT "DEC" / 'drive by wire' -
then you really don't need the Yamaha Gateway -
just connect up without it.

[99yam40]

I really did not understand what you wrote, but if you put 24volts to the F70 motor, there could be damage to all sorts of things

[Yamaha18]

I found my problem i think. Please confirm. My Yamaha 70 hp ECM electronic control module needs a reset. The can (control area network) bus stopped transmitting data at my last trip when my battery died. I shared my starting motor with it my 24 volts *****ing motor. I had to switch my starting motor with my 35 amh motor for fishfinder and started the motor up and went to the ramp.
is there a way i can reset the code in F70 without visiting the dealer? I think they charge an hour labor for hooking up to the computer. You can buy engine reader like OBD II code reader and reset the code, so i wonder if there is such a thing for boat engine.

[99yam40]

good luck with getting a warranty on electrical stuff, most places say no.
too many people screwing things up and then returning them or at least trying to.

also a test light works to some degree, but it cannot tell the difference in 10,11, or 12 volts.
it just says you have some power.
volt meters are a lot better

[Yamaha18]

Please help Yamaha outboard parts forum viewers if you know a better way or you see what I am doing wrong. I checked the voltage of multi-hub but power for multi-hub and NEMA2000 backbone until now. Here is what I did to share and help others.
ok, a light tester tool is a must have to troubleshoot boat electronics. I was able to find 12v power in all my CL Yamaha multi-hub and NMEA2000 cables so fuses are checked. The only thing left to check is a NMEA2000 data reader like Actisense usb to CAN bus dongle to read my F70 outboard engine data to a Laptop or DIY build a reader using Arduino or Raspberry Pi 3b plus to read data and display on a laptop or computer monitor. I will post a NEMA2000 cables power check later. So far everything checks out, so I am beginning to think my Yamaha CL data gateway is broken and needs to be replaced. Luckily it is still within 1 year of Yamaha parts warranty.

image0 (5).jpeg

[Yamaha18]

Yamaha 'Command Link' is essentially NMEA 2000
so four conductors:
red=12V+,
black=ground,
and the blue and the white are the data wires.

The wiring for NMEA 2000/Command Link,
when properly configured,
is arranged in a "backbone" - with,
at each end, the white and the blue wires connected via a 120 ohm resistor
like so:




as far as testing 'data wires'
with all the devices 'off',
you should have:
- continuity between all whites,
- continuity between all blues,
- a 60 ohm resistance between white and blue, anywhere


By the way
I didn't see what Yamaha model you are working with;
but, although Yamaha 'assumes' you will use their Gateway -
if the engine is 'mechanical control' -
NOT "DEC" / 'drive by wire' -
then you really don't need the Yamaha Gateway -
just connect up without it.

I tried connecting the F70LA outboard to NMEA2000 with Yamaha engine interface cable without Yamaha gateway 6YG-8A2D0-00-00 but no display on my Raymarine Axiom MFD earlier. That's why I bought the Yamaha gateway but now the gateway seems to be broken. How do i check it?

[Yamaha18]

How do you check to see whether the 6YG-8A2D0-00-00 is working or not? I didn't find any loose connections in all the wires.

[Yamaha18]

DDD5C385-D8F5-4B24-9890-32780B28938F.jpeg

[Yamaha18]

I can't imagine why you would see a problem from putting engine in gear -

but if you have your connections arranged as that photo shows -
without termination resistors on the Yamaha multi-hub -
its a miracle if it works at all

Correct! It would not work without the 2 resistors.

whats weird was the trim color showed solid blue for 5 seconds and then disappear.
i don’t remember whether it will turn to yellow if i had a good connection.
i know it would turn to yellow for the trim bar when it was working.

[fairdeal]

I can't imagine why you would see a problem from putting engine in gear -

but if you have your connections arranged as that photo shows -
without termination resistors on the Yamaha multi-hub -
its a miracle if it works at all