More Suzuki Engine Data issues.... DF225 - PGN-127489 field 6 absent

[Weirdfish]

After finally getting the fuel flow right with updated (Older) firmware (2.3)... thanks to Moonlighter in particular for all your advice.

I am getting this error on the fuel manager, the fuel flow seems to read about right now but and at the end of the journey it seems accurate. and then often after turning off the engine and looking back at the data the trip fuel used has gone wrong and this error message is showing - (PGN-127489 field 6 absent)

Does anyone know what this means? The trip went the other day from 33 litres for a journey I did when i moored up to using the boat 15 mins later and it saying I had used 167 litres.... this is driving me to distraction!!

[Weirdfish]

Just found this so confirmed that Field 6 relates to fuel flow rate but how can i fix it :-(

PGN 127489: Engine Parameters, Dynamic

PGN 127489 carries data about a wide range of engine parameters with an update rate of once per second.

PGN 127489
Engine Parameter Typical Display Range
Oil Pressure 0 - 400 PSI
Oil Temperature 0 - 500 ° F
Temperature 0 - 500 ° F
Alternator Volts 0 - 100 Volts
Fuel Rate 0 - 800 GPH
Total Hours 0 - 999999
Coolant Pressure 0 - 400 PSI
Fuel Pressure 0 - 400 PSI
STATUS INDICATORS
Check Engine 0 - 1 (OFF-ON)
Over Temp 0 - 1 (OFF-ON)
Low Oil Pressure 0 - 1 (OFF-ON)
Low Oil Level 0 - 1 (OFF-ON)
Low Fuel Pressure 0 - 1 (OFF-ON)
Low System Voltage 0 - 1 (OFF-ON)
Coolant Level 0 - 1 (OFF-ON)
Water Flow 0 - 1 (OFF-ON)
Water In Fuel 0 - 1 (OFF-ON)
Charge Indicator 0 - 1 (OFF-ON)
Preheat Indicator 0 - 1 (OFF-ON)
High Boost Pressure 0 - 1 (OFF-ON)
Rev Limit Exceeded 0 - 1 (OFF-ON)
EGR System 0 - 1 (OFF-ON)
Throttle Position Sensor 0 - 1 (OFF-ON)
Emergency Stop Mode 0 - 1 (OFF-ON)
Warning Level 1 0 - 1 (OFF-ON)
Warning Level 2 0 - 1 (OFF-ON)
Power Reduction 0 - 1 (OFF-ON)
Maintenance Needed 0 - 1 (OFF-ON)
Comm Error 0 - 1 (OFF-ON)
Sub or Secondary Throttle 0 - 1 (OFF-ON)
Engine Shutting Down 0 - 1 (OFF-ON)
Engine Parameter Typical Display Range
Percent Load 0 - 100 %
Percent Torque 0 - 124 %
Field Details

Field 1: Engine Instance (8-bit unsigned integer) This field indicates the particular engine for which this data applies. A single engine will have an instance of 0. Engines in multi-engine boats will be numbered starting at 0 at the bow of the boat incrementing to n going towards the stern of the boat. For engines at the same distance from the bow and stern, the engines are numbered starting from the port side and proceeding towards the starboard side.
Field 2: Engine Oil Pressure (16-bit unsigned integer) This field indicates the oil pressure of the engine in units of 100 Pa.
Field 3: Engine Oil Temperature (16-bit unsigned integer) This field indicates the oil temperature of the engine in units of 0.1°K.
Field 4: Engine Temperature (16-bit unsigned integer) This field indicates the temperature of the engine coolant in units of 0.1°K.
Field 5: Alternator Potential (16-bit signed integer) This field indicates the alternator voltage in units of 0.01V.
Field 6: Fuel Rate (16-bit signed integer) This field indicates the fuel consumption rate of the engine in units of 0.0001 cubic-meters/hour.
Field 7: Total Engine Hours (32-bit unsigned integer) This field indicates the cumulative runtime of the engine in units of 1 second.
Field 8: Engine Coolant Pressure (16-bit unsigned integer) This field indicates the pressure of the engine coolant in units of 100 Pa.
Field 9: Fuel Pressure (16-bit unsigned integer) This field indicates the pressure of the engine fuel in units of 1000 Pa.
Field 10: Reserved (8 bits) This field is reserved by NMEA; typically all bits sent as a logic 1.
Field 11: Engine Discrete Status 1 (16 bits) This field indicates warning conditions of the engine with the following bit assignments (value of 1 indicates warning present):
Bit 0: Check Engine
Bit 1: Over Temperature
Bit 2: Low Oil Pressure
Bit 3: Low Oil Level
Bit 4: Low Fuel Pressure
Bit 5: Low System Voltage
Bit 6: Low Coolant Level
Bit 7: Water Flow
Bit 8: Water in Fuel
Bit 9: Charge Indicator
Bit 10: Preheat Indicator
Bit 11: High Boost Pressure
Bit 12: Rev Limit Exceeded
Bit 13: EGR System
Bit 14: Throttle Position Sensor
Bit 15: Emergency Stop Mode
Field 12: Engine Discrete Status 2 - (16 bits) This field indicates warning conditions of the engine with the following bit assignments (value of 1 indicates warning present):
Bit 0: Warning Level 1
Bit 1: Warning Level 2
Bit 2: Power Reduction
Bit 3: Maintenance Needed
Bit 4: Engine Comm Error
Bit 5: Sub or Secondary Throttle
Bit 6: Neutral Start Protect
Bit 7: Engine Shutting Down
Bit 8-15: These bits are reserved and should be masked when read
Field 13: Percent Engine Load (8-bit signed integer) This field indicates the percent load of the engine in units of 1 percent.
Field 14: Percent Engine Torque (8-bit signed integer) This field indicates the percent torque of the engine in units of 1 percent.

[Moonlighter]

Ok, never seen that error before!

Refresh my memory - what GpS screen do you have? Hopefully it is a Simrad or Lowrance, as these are the only ones that will allow you to configure/set up the Suzuki interface.??

If you have one of them, with the engine key on, go into the newtork menu/device list and select the Suzuki. Select configure, and check the "instance" number - it should be 0.

If it isnt 0, that could be the problem. Select unconfigure, then reconfigure the interface. See if that resets the instance to 0. You could also try manually changing the instance number to 0.

As usual, just check those network connections and remember that the devices can only be connected to the "leg" part of the T pieces.

If that doesnt work, i have no further ideas.

Im not sure where you are located but since this is a new boat/motor to you, and you dont know its history or how well it has beens serviced, it may be worth considering taking it to a reputable Suzuki dealer in your area and having them do a thorough service on the motor, reviewing these issues, getting them sorted out so you start with a clean slate.

[Weirdfish]

Hi, Thanks for all your help...

The Chartplotter I have is a Raymarine a65MFD but I currently have borrowed a HDS 9 which is how I was able to downgrade the firmware to 2.3 to get the right fuel flow.

The issue that I have is that the fuel used trip is changing... I did a run today and used 25 Ltrs of fuel which I think will be about right but will confirm at the pump tomorrow however when I shut down the engine to wash her down then re-started the fuel used trip increased by c25lts. It kept doing this every time i turned it off and on... I recorded a video here..

https://youtu.be/bCIZpyoZ_kQ

So fed up with this now, why can't it just be simple and work.... dare I say it, like my old Verado did!

[Moonlighter]

Final suggestions

First of all, check the data sources for fuel remaining on the Raymarine. It should be set to global or the Suzuki interface. If the Ray has its own internal memory for fuel, it could have defaulted to that which would then cause issues, so make sure the data source for fuel remaining is definitely pointing to the right source. This could well be the issue!!

A way to test this theory would also be to try it with the Raymarine removed and just the HDS attached to the network. I have heard of some isolated cases where Raymarine units have caused problems on networks, although not like this. Might be worth a try. (Make sure the Raymarine is running the latest available software version too)

If that doesnt produce any improvement, try running interface sw version 2.5.0. It should work with your engine. This version auto-detects the engine year and hp so you wint be able to change them.

[Weirdfish]

Thank you as always, will have another go tomorrow :-)

[Moonlighter]

I edited my reply (last one , above) after thinking about it some more, so hope you saw that.

To be clear - take the Raymarine off the network, replace it with the Lowrance, and do your test again to see what fuel used values are being shown and what happens to the fuel used values on the Lowrance if you turn the engine on and off.