Twin Engine set up- Starboard Kill button kills both engines

[Robert McManus]

Port Kill button does nothing

2009 QSB 5.9 380 HP engines with SmartCraft VesselView v1.5 displays. 990 hours.

I did an oil change yesterday on both engines. After completing the change I tested engines alongside the pier and they were normal but when I went to shut down the Port engine the kill button had no affect. When I turned the port Key off on the port engine no affect. When I depressed Starboard kill button both engines shutdown. On turning off the keys and turning back on Starboard Key switch both engine electric fuel pumps start.

Anybody see anything like this? could I have disturbed some wiring on the engine to cause this while I was setting up the oil pump out hoses?

Topic

[Tony Athens]

Glendinning has great customer support and is one of the main reasons we sell their products. John Glendinning has been in my shop twice in the last few years and he is totally “hands-on” with all they sell.. That  says volumes to me.      BTW, this was a good experience to share on the forums as it helped  me and will may help others down the road.  Thanks.     Tony

[Robert McManus]

Never closed out this topic

After retiring and setting aside more time to trouble shoot this problem I discovered that by disconnecting the “CP Enable” plug on the EEC3 the stop button functions worked correctly.  When I spoke to Mr. Parish at Glendinning he diagnosed that it was likely a failed diode on the EEC3 motherboard which allowed the port and starboard ignition circuits to cross feed. 

I setup an RMA with Glendinning, returned the unit to their SC factory.  They returned the unit with the new motherboard in about 10 days. As part of their repair they had to re-program our EEC3 unit for the engines I have (provided them with serial numbers).  When we received the repaired unit it was a straight up “plug and play.”   Our engine stop buttons now worked correctly.  The Smart Craft displays also functioned normally in that they shut off when the stop button was depressed and cycled back on as long as the ignition key was “on”.

 

Sorry for not closing this out earlier

2 users thanked author for this post.

1969Roamer46, willyok

[Corey Schmidt]

Dual Wake Harness

For your configuration there should be a “Dual Wake” harness that turns on both engine displays with either key switch and manages the IGN circuit between the P&S j-box… do you have this?

Cummins SmartCraft Dual Wake Ignition Harness

Also, the only place the Glendinning should interact with the engine IGN circuit is on the “enable” loop… this will typically be on the “Medusa” harness near the engine… it is called the “Keyswitch Circuit Breakout Jumper” Your Glendinning is probably connected here and senses 12V+ to enable the control system:

https://www.sbmar.com/wp-content/uploads/2015/10/Vessel-Adapter-Harness.jpg

You might want to bypass this temporarily to see if it changes the behavior you’re experiencing?

Last thing and VERY important: Make sure that you have the require short vessel adapter harnesses that connect between the display harness and the j-box… without these —- FUNNY things happen:

Cummins Mercury SmartCraft VesselView Adapter Harness

[Robert McManus]

Access to controls very limited

Access to engine controls is limited. J boxes are loose in wiring compartment in bulkhead- I definitely need to get in there when its not 100F and unclutter that pile. Harness is not neatly arranged but all connectors do check to be tight. None were disturbed during oil change maintenance

the Glendinning has the engine synch. I recall pushing engine “synch” button without thinking while engines in Glendinnnig” “warm” mode which had no affect. In “warm” mode the synch doesn’t seem to perform a function anyway by design(?).

One more update- when port key is on only port engine vessel view turns on. When starboard key is on both Starboard and Port engine vessel view boot. It seems as though the Starboard is acting like the “master” unit for power to vessel view, and shutdown. Are they switched through the Glendinning cpu? should I do “hard” boot of the glendinning by removing power cable and reinstalling it?

[Corey Schmidt]

IGN

The IGN circuit on the Cummins ECM controlled engines is very simple… the IGN comes from the Key to the Start/Stop button and then back to the IGN pin (33) of the 40-pin Vessel harness. If the circuit on that one wire is opened, the engine will not run. Power to or from this wire basically controls the engine.

If you have one display per engine at the dash then the engines are connected together somehow… probably at the 2x 6-way junction boxes behind the dash…. do you have ENGINE SYNC and IDLE +/- at the dash?

Can you send me a nice clear picture of the junction boxes behind the dash?

What would you say changed when you were performing the oil change? Anything electrically? Batteries?

[Robert McManus]

Glendinning EEC3 throttles

In reviewing the Glendinning manual both key switches control the Glendinning computer. I have written them to see if this could be related to the EEC3.

[chrism6784]

Isn’t it weird? I have exact thing happening literally exactly
Same thing…I could be possibly a harness issue? Maybe we try calling Cummins directly

[Robert McManus]

update on configuration

Battery voltage 12.7v on each engine battery

Both keys OFF– Turn on Port engine key- port engine electric fuel priming pump starts. Port Vessel View boots. Depress Port start button- port engine starts. depress Port engine stop button- port engine stops, vessel views shuts down then reboots with indication of engine stopped.

Both keys OFF– Turn on Starboard engine key- Starboard engine electric fuel priming pump starts. Starboard Vessel View boots. Depress Starboard start button- starboard engine starts. Depress Starboard engine stop button- Starboard engine stops, vessel views shuts down then reboots with indication of engine stopped.

Turn both Keys ON. Start Starboard engine with starboard start button- starboard engine starts. Start Port engine with Port start button- Port engine starts. Depress Port engine stop button- NO port engine stop. Depress Starboard engine stop button both engines stop.

[chrism6784]

I have the same problem happening in mine engines I have 8.3’s….just started out of no where, I’m curious to see some replies myself

[Author]

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