Engine Guardian

[Kevin Hayes]

Is there any correct list of engine Guardian mode for SmartCraft technology to know what exactly my code 59 and 61 are?

 

[Korkie]

Here ya go - this is out of the Sierra manual that covers the SmartCraft

59 FUEL INJECTOR 1
OPEN CIRCUIT
INSUFFICIENT CURRENT DRAW ON
FUEL INJECTOR CIRCUIT
Check for:
1. Open Fuel Injector Circuit
2. Faulty Fuel Injector
VARYING HORN 100% Guardian

61 FUEL INJECTOR 2
OPEN CIRCUIT
INSUFFICIENT CURRENT DRAW ON
FUEL INJECTOR CIRCUIT
Check for:
1. Open Fuel Injector Circuit
2. Faulty Fuel Injector
VARYING HORN 100% Guardian

Could be a bad battery. SmartCraft is very sensitive to battery voltage and amperage changes.

 

[Kevin Hayes]

Thank you Korkie for the response!
So after I first started getting system fault 059 and 061, I had assumed the same thing from reading and researching but was unable to figure out which injector it was, so I replaced all 8. And same issue. I had a mechanic come down and plug it in to the computer and it came back “supposedly” as exhaust temp. I am honestly unsure as this mechanic is now ghosting me not returning phone calls or text messages. I am so lost so confused!

 

[Korkie]

Not sure why 059 / 060 would indicate otherwise on computer. Not sure if the different versions make a difference in code numbers, I have the 5000 series. I know I chased around fault code 040, which is MAT Lo (manifold air temp low circuit) and after replacing the 3 batteries on that side it went away. Took 2 seasons to figure it out. I was advised the Smartcraft operates on a specific voltage, don't remember exactly what it is, but something like 3 or 5 and it does not do variations well. If that voltage drops or elevates for what ever reason it can throw unrelated codes. I was advised this by a Merc guy. So batteries where due to be replaced so I did so and it stopped throwing that code. SmartCraft is nice, but can be a PITA as well.

 

[Kevin Hayes]

I am realizing this! It is frustrating because I just purchased this boat! No issues during sea trial and issues after ownership. I know that I have unplugged other things chasing my head on this one and Smartcraft picks up on it just fine..... would you know the proper process for testing injector harnes?

 

[Korkie]

No I do not. I usually do my best to figure out and repair issues. Mostly things that are mechanical - i.e. water temp and flow issues, electrical, things that are acting stupid, and do most of my PM with exception of outdrives. Leave those to my merc guy. We are in a 2006 with 1100 hours on her and seems like something is always needing attention. But my Merc guy says he sees the same issues with 3 yo boats, so age certainly has its lows, but new isn't necessarily better. I do know you can test the fuel rail pressure with the proper gauge and have had a friend do that for me, but I know very little about the SmartCraft other than it is very temperamental in regards to voltage it is seeing. You can get your own diagnostic system that will plug into your laptop to read the SmartCraft codes. They are a bit pricey but also cover more than just Mercs. So if you have some boating buddies, I know of a few that have split the cost and bought a system together. It will pay for itself pretty quick as reads by a service person ain't cheap. Check around to see which mechanics other boaters with Mercs use / recommend in your area and seek that person out. Don't be affraid to travel a few extra miles to get the "right" person. I am lucky to have found a guy that has been around for many years but also keeps up on newer systems that is my go to. Been a good experience with him over the past 5 years.
Oh - and the frustration has just begun.

 

[Kevin Hayes]

Korkie! Thank you for your thoughts recommendations and knowledge! I will keep you informed as to next steps taken! Thanks a lot!

 

[Espos4]

Thank you Korkie for the response!
So after I first started getting system fault 059 and 061, I had assumed the same thing from reading and researching but was unable to figure out which injector it was, so I replaced all 8. And same issue. I had a mechanic come down and plug it in to the computer and it came back “supposedly” as exhaust temp. I am honestly unsure as this mechanic is now ghosting me not returning phone calls or text messages. I am so lost so confused!

As stated, smart craft is very voltage sensitive. There is a tag on one of my battery cables (thinner smart craft power cable) the states that needs to be securely attached directly to the battery post, I believe by itself with no other wires. I'll look for it and take a picture.

Also, check the water levels in your batteries to make sure they are topped off.

 

[Kevin Hayes]

Awesome will do thank you Espos4!
I did find a single wire going to a 5 amp fuse on my positive battery terminal without the fuse my engine just turns over and won’t start.... not sure if this is the Smartcraft. As for those two codes 059 and 061 I am not fully confident that these are injector codes as I have replaced all injectors and threw on a noide to my injector terminals and everything was pulsing just fine.... I had a jack of all master at none mechanic come down and throw on a computer and all he said is that they are exhaust temperature codes.... he has since ghosted my phone calls and text messages I am reading 0psi on water I replaced raw water pressure sensor and I pulled out my raw water pump and it looked good. I also tried flushing fresh water through all my cooling lines and throughout my manifolds via back flushing and still no luck. I have a catalyst style manifold and I’m beginning to think I have clogged cats and or manifolds he never specified whether it was port or starboard side....

 

[Kevin Hayes]

Also did a fuel pressure check and reading 38psi

 

[Espos4]

FYI, here is a picture of the tag.....

 

[Korkie]

The power feed on our 2006 496mag comes off the 90 amp fuse that is down on the starter.