Merc audio warning system not working and engine won't crank

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

For what its worth I just checked radio and it wont turn on

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

Disconnect the main harness plug (Round 10 pin harness)
With power on, check the 2 large terminals on the engine side of the harness. Put your black lead on one of them, and the red lead on the other, and see what you get.

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

I disconnected it (mine only has 9 active pins in it) and I had nothing on any pin. I checked each pin to all the other pins and got 0 volts.

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

You were checking the ENGINE side of the harness and not the harness that goes to the helm weren't you? The power all comes from the engine, not the helm.

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Yep...bottom side, short side right off of the engine. Other side looped and ran into and joined another wire bundle at transom.

checked them individually to ground and all 9 have 13vdc

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

Now, with your meter, put the black lead of your meter on the neg terminal of your battery. Then put the red test lead on the #6 terminal of the engine harness from the picture above.

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Don S I'm done for the night. I am going to try to live and fight another day on this. After eating dinner it occurs to me that the radio not working must be related since you have to have the ignition switch on to turn it on. What do you think?

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

Could be on the radio question, it really shouldn't be on the ignition circuit at all. It should be on the accessory circuit with the bilge pump, blower, lights, etc. The only thing on the engine circuit should be the engine.
If you don't have power to the engine plug, you don't have power to the instruments or your radio.
I just uploaded this wiring diagram for your engine. It may help
http://www.4shared.com/document/vLDe3zXz/Wiring_Diagram_30L.html
Also go up to the Adults only sticky and download oem service manual #26

Those two should help you understand where the power comes and goes. Tomorrow, I have to go to work................... as a Boat Mechanic no less

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Now, with your meter, put the black lead of your meter on the neg terminal of your battery. Then put the red test lead on the #6 terminal of the engine harness from the picture above.

Went out and did this...can you tell I want this figured out? LOL Just to be sure I checked the right one, I checked them all from the pin to the neg term on battery and I have 13.9 volts on every one of them.

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Could be on the radio question, it really shouldn't be on the ignition circuit at all. It should be on the accessory circuit with the bilge pump, blower, lights, etc. The only thing on the engine circuit should be the engine.
If you don't have power to the engine plug, you don't have power to the instruments or your radio.
I just uploaded this wiring diagram for your engine. It may help
http://www.4shared.com/document/vLDe3zXz/Wiring_Diagram_30L.html
Also go up to the Adults only sticky and download oem service manual #26

Those two should help you understand where the power comes and goes. Tomorrow, I have to go to work................... as a Boat Mechanic no less

I'll take a look at these but bilge, blower, lights, trim, and gauges all work. I hope someday I can repay you for all of your time today. You've gone the extra mile to help Don S!

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

I'm about to go to the Bayliner site and download the owners manual and see how they wired your boat. Is this a Trophy, or a Cierra?

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Its a 2007 Bayliner 185BR

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

Found it, You do have a 15A fuse in the fuse panel in the helm area. It goes to the ignition switch.
Page 68 of 76 (adobe numbers)
http://www.baylinerparts.com/Manuals/1820285.pdf

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Could be on the radio question, it really shouldn't be on the ignition circuit at all. It should be on the accessory circuit with the bilge pump, blower, lights, etc. The only thing on the engine circuit should be the engine.
If you don't have power to the engine plug, you don't have power to the instruments or your radio.
I just uploaded this wiring diagram for your engine. It may help
http://www.4shared.com/document/vLDe3zXz/Wiring_Diagram_30L.html
Also go up to the Adults only sticky and download oem service manual #26

Those two should help you understand where the power comes and goes. Tomorrow, I have to go to work................... as a Boat Mechanic no less

I just looked in radio owners manual for my boat and step one in troubleshooting guide for radio not turning on is: ignition switch not turned on

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

I just looked in radio owners manual for my boat and step one in troubleshooting guide for radio not turning on is: ignition switch not turned on

That is for the stereo, but it's not wired to the ignition switch on your boat. It is on a seperate 10A fuse just below the ignition fuse in the Bayliner owners manual I linked you to. DO NOT go by the stereo owners manual. The instructions are for cars.

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

Found it, You do have a 15A fuse in the fuse panel in the helm area. It goes to the ignition switch.
Page 68 of 76 (adobe numbers)
http://www.baylinerparts.com/Manuals/1820285.pdf

Just checked fuse panel at helm in front of dash and there is no 15A fuse installed. All 10's, 7.5's, and 5's

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

That is for the stereo, but it's not wired to the ignition switch on your boat. It is on a seperate 10A fuse just below the ignition fuse in the Bayliner owners manual I linked you to. DO NOT go by the stereo owners manual. The instructions are for cars.

Ok.

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

It may have the wrong size fuse in it, you should find a R-PU (Red w/purple stripe) wire going to the fuse panel and from the ign. fuse to the ignition switch.

 

[ah64aviator]

Re: Merc audio warning system not working and engine won't crank

It may have the wrong size fuse in it, you should find a R-PU (Red w/purple stripe) wire going to the fuse panel and from the ign. fuse to the ignition switch.

Yeah good idea to identify which part of the fuse block it is. I was looking for a diagram that correlates the schematic to the actual fuse locations in the boat but your idea is much simpler. Checking now...

 

[Don S]

Re: Merc audio warning system not working and engine won't crank

Are you downloading and looking at these links I am posting for you?