Boat

Have Boat Questions? Ask a Boat Repair Expert.

Ask an Expert,
Get an Answer ASAP!

Boat

I have a 2002 Maxum SCR 3100 and it has a Jabsco electric

Customer Question
Customer: I have a 2002...
Customer: I have a 2002 Maxum SCR 3100 and it has a Jabsco electric flush 12 volt toilet. When I press the flush button switch nothing happens. I took wires off switch and tested voltage and their was no power to switch. Breakers are on and I could not find a fuse which I was told might be behind the battery on off switches so I do not know what steps to take next
JA: Thanks. Can you give me any more details about your issue?
Customer: The boat only has 120 hours on it and the survey done on boat prior to me purchasing it a few months ago said everything worked fine. I am not sure if I am missing something simple... I thought there should be power to the switch no matter what but I could be wrong
JA: OK got it. Last thing — Marine Mechanics generally expect a deposit of about $26 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 2 years ago.Category: Boat
Show More
Show Less
Ask Your Own Boat Question
Customer reply replied 2 years ago
Okay I went to pay the deposit on paypal but noticed it charged me the full $26 which I paid and not the $5 it said it was going to charge me...I understand and will be happy to pay the $26 if my issue gets resolved however a little concerned why it said it would charge $5 for the deposit and this wasn't the case... anyways if I get this toilet figured out I don't care it has been really boggling me.
Answered in 17 minutes by:
1/21/2016
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11,108
Experience: 40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
Verified

Hello. My name is Tan.

Have you checked the fuses in the fuse panel? There should be voltage to the switch all the time.

Now do the other 12 volt accessories work correctly? Do you know if the house battery is fully charged?

Ask Your Own Boat Question
Customer reply replied 2 years ago
I checked every breaker, every fuse, and every single other 12 volt item works as it should. All three batteries are fully charged and hold great voltage under a load. Another tech told me there would not be power to the switch unless toilet motor signaled it to do such. I did not understand that at all...
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

Did you check voltage at the circuit breaker both terminals.? You could have a bad circuit breaker? The switch to the head should have 12 volts.

Ask Your Own Boat Question
Customer reply replied 2 years ago
All I have is a panel with resettable red push buttons and I unscrewed that panel board and it did read 12.7 volts
Customer reply replied 2 years ago
All other switchable breakers do function and shut off specified items. There is not a separate circuit breaker for head in cabin only the push button one I spoke of in cockpit under steering wheel.
Customer reply replied 2 years ago
if motor were bad I would still have 12 volts to the switch is what I hear you saying and that is what I figured. I also went as far as following wires from circuit but could not get all the way as they disappear in fiberglass walls as I wanted to do a continuity check for break in wire which I find highly doubtful
Customer reply replied 2 years ago
Do you know on a 2002 Maxum SCR 3100 where the fuses and breakers should be located for the head. There is not an actual breaker button or circuit breaker or fuse specifically labeled for the toilet/head... I did though test all I see including accessory circuits etc...
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

12.7 on both terminals of the breaker? Those type breakers are notorious for going bad. If you have voltage then you will have to trace the wire down and find where you are loosing voltage from the breaker to the switch at the head.

There is a plug for the harness wiring going to the head. I don't have a manual on your model boat so I can't tell you where the plug is. The wire color should be a brown wire with a yellow stripe. We also need to check the ground going to the head. The ground will be a yellow wire. Have you tested the wires at the head for voltage with a voltmeter. If the head motor is bad you can have voltage and it won't work so we need to verify that you have no voltage for sure on the brown/yellow + and the yellow - wires.

Ask Your Own Boat Question
Customer reply replied 2 years ago
There were only wires coming up through the fiberglass floor of boat and going directly into the motor.. I took shell of motor off and their was no power to those wires either. As for the breakers every breaker has power and none are actually labeled for the head but I assume the shower pump could be the same one or an accessory breaker but again all have power. I had narrowed things down to tracing a break in a bad wire myself and attempting a continuity test but the wires are buried and fished in a way that I could not get the back in or run new ones...
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

Ok you are on the right track it is just a matter of finding the break in the wiring. You are most likely going to find a corroded connection. I have done about all I can do without being there to find the problem. Electrical issues are impossible to find over the internet. These are just something you have to look for.

Without a wiring diagram there isn't much more I can tell you on this issue.

Check all the harness plugs for the accessory wires it could be just a corroded connection or possibly a burnt connection. The head pulls allot of amperage and I have seen them burn connections from resistance.

Ask Your Own Boat Question
Customer reply replied 2 years ago
Oh I also took a 12 volt jump box and put power into the wires that went to the switch to see if I could get the motor to turn and got nothing from that either.
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

That tells me the head motor is bad. Have you tested the wires at the head motor with a volt meter?

Ask Your Own Boat Question
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

Connect the voltmeter between the yellow ground and the brown/yellow positive do you read voltage with head switch activated?

Ask Your Own Boat Question
Customer reply replied 2 years ago
no power... Also I did check all connections this boat was stored inside heated area its whole life it has 130 hours on it approximately everything is like brand new... That is where the confusion lies also. I had narrowed it down to a break in a wire as the only candidate I could think of but when also running direct power to switch wires did not do anything I eliminated that as a likely candidate as I was told there would not be power to that switch at all times due to possible clogs in pressure pipes etc... hence me seeking your help
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

What is the model of this head?

Ask Your Own Boat Question
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

Clogs won't keep power from going to the head. The switch runs the motor which pumps waste out and water in. Therte is no pressure on discharge side of the head.

Ask Your Own Boat Question
Customer reply replied 2 years ago
The absolute only thing its says on it invisible sight is Jabsco and the motor is a 12 volt... That is what I would have thought too but when I googled about the power it did say there is a sensor cutoff if a clog is detected on some heads.
Customer reply replied 2 years ago
I am not saying this google information is correct... Web MD always says I am dying when I put in my symptoms lol
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

Never heard of a switch to shut off when clogged.

Can you post a picture of the head?

Does this look like your head? http://www.pumpvendor.com/media/jabsco/Jabsco_37045_series.jpg

Ask Your Own Boat Question
Customer reply replied 2 years ago
Similar of course but no not the same my motor is black and in the back has no white plastic cover over it. Shape of toilet a little different but similar
Marine Mechanic: Tan, MerCruiser Certified Technician replied 2 years ago

Ok I need to determine what model head you have. But we are still having a voltage loss issue. So we have to follow the wires. I can't do much more to help at this point. I will opt out maybe another expert can help.

Ask Your Own Boat Question
Customer reply replied 2 years ago
Okay thanks...
Ask Tan Your Own Question
Tan
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 11,108
11,108 Satisfied Customers
Experience: 40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Tan is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

Rigger, Diagnostician

695 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

15,782 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,108 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,728 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

< Previous | Next >

Related Boat Questions
I need to either buy a new Volvo Penta 250 4cyl Motor or
hello, I need to either buy a new Volvo Penta 250 4cyl Motor or find a website to buy all the parts to rebuild it as its heavily oxidized … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
What should the compression be on a Yamaha 250 HPDI. Hard to
What should the compression be on a Yamaha 250 HPDI … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Can i put my hook 7 model on demo on my table & hook to
can i put my hook 7 model on demo on my table & hook to battery --power cabe only … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I'd like to know how to find how exacting what my Marine
I'd like to know how to find how exacting what my Marine Trawler has for and engine. I know it's a Ford Lehman diesel but I have conflicting papaerwork, one says is 130hp and another states 120 hp - h… read more
Boat Doc
Boat Doc
146 satisfied customers
Water in oil sump in Honda 4-stroke 75 hp motor. I went to
I went to change the oil and the sump was full of 'yellow' oil which tells me water in getting in somehow?? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
4.3l Merc cruiser always seems to choke even when hot and
4.3l Merc cruiser always seems to choke even when hot and runs rich. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I OWN A1989 27 LUHRS ALURA. I NEED TO KNOW WHAT THE
I OWN A1989 27 LUHRS ALURA . I NEED TO KNOW WHAT THE REDUCTION RATIO IS ON O.E.M TRANSMISSION AND ORIGIONAL SIZE AND PITCH FOR THE PROP..SINGLE SCREW LH WHEEL..CAN YOU HELP ME? … read more
Boat Doc
Boat Doc
146 satisfied customers
Planning a tiller to wheel upgrade, and in need of the specs
planning a tiller to wheel upgrade, and in need of the specs for my 82 31' Dufour 3800......specifically the rudder post diameter so I can find the right sized quadrant. I have a 2 3/8 inch one online… read more
Boat Doc
Boat Doc
146 satisfied customers
I own a Kawasaki 11 STX. 2 stroke, For the past 2 - 3 years
I own a Kawasaki 11 STX. 2 stroke, For the past 2 - 3 years we battle to start the engine when cold. Just about runs the Bat. flat. After she has warmed up no problem, leave her for a hour or three sa… read more
Boat Doc
Boat Doc
146 satisfied customers
I am considering buying a 2008 used pontoon with a Yamaha
I am considering buying a 2008 used pontoon with a Yamaha 115 hp. My question is it has 500 hours. Is that considered a lot of hours on that motor? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
I have a Volvo Penta 5.0 in my Azure 220. I turn the key to
I turn the key to the run position and it beeps twic like normal. When I go to crank, the starter seems to turn over but does not engage. Is it because the battery is low and does have enough cranking amps? … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
No spark from dist to plugs, Got spark from coil to dist but
Got spark from coil to dist but not further down the line … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
Ram My 2007 Mercruiser Bravo V8 runs for approximately 45
Hi Ram My 2007 Mercruiser Bravo V8 runs for approximately 45 minutes then stops I've replaced the fuel filter along with the fuel pump the distributor and the distributor cap however this problem stil… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
My outboard motor serial number is 0B210596. What is the
My outboard motor serial number is ***** What is the year model of this engine. … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I just bought a merc outboard.told it was a 9 1/2 h.p I
I just bought a merc outboard.told it was a 9 1/2 h.p I would like to know h.p size and year serial #is(###) ###-#### Also I can only find drain plug on lower unit where is upper plug to tell how much… read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
I have a Jabsco VFlo 5.0 pump that runs slowly all the time.
I have a Jabsco VFlo 5.0 pump that runs slowly all the time. … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade Scho
15,782 satisfied customers
It is a Suzuki DF200 (2011) that stars and runs quite well
Hi! It is a Suzuki DF200 (2011) that stars and runs quite well but then the ignition cuts out completely after a while. (between five and twenty minutes). There were no fault indications on the gauges… read more
Boat Doc
Boat Doc
146 satisfied customers
I hope this is the right platform for this question. I have
Hi, I hope this is the right platform for this question. I have a 1989 mercruiser alpha one 1750 VBR Cobina Spirit. It has been warehoused for about 10 years. It working fine when wearhoused, and now … read more
Clamp-onTech
Clamp-onTech
405 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x