Airmar Smart Transducer not working

[farwellbooth]

Hello,

I have an Airmar part number 888828A21 that isn't reporting depth anymore. The screen just shows zero. The temperature is working. This is in a 2010 Sundeck 220. I've attached a couple pictures.

How far back to the wires go, clear to the helm? Or is there a plug nearby in the bilge? This will be difficult for me to rewire all the way back to the helm. Anyway to test or is it most likely bad? I've tried wiping and cleaning it but still doesn't work.

And I don't see any replacements available anywhere. I'd like to just buy the transducer obviously and not replace the entire through hull. Thank you

 

[dtfeld]

I’d call Gemeco...airmar distributor in the states 803 693 0777. The sensors are typically in a housing and can be pulled with boat in the water and a blanking plug installed. the smart sensors I think are wired into a harness. There might be an updated sensor.

However, what is this connected to that is displaying the depth?

 

[farwellbooth]

I’d call Gemeco...airmar distributor in the states 803 693 0777. The sensors are typically in a housing and can be pulled with boat in the water and a blanking plug installed. the smart sensors I think are wired into a harness. There might be an updated sensor.

However, what is this connected to that is displaying the depth?

Thanks for the contact. The depth is shown on the original SeaRay helm gauge and also an aftermarket Garmin plotter.

 

[Lazy Daze]

"Typically" you can just listen really close for a faint ticking sound coming from the ducer, indicating it's sending a signal. The blanking plug that David references is, from the factory, tied to the transducer - but I don't see it there. Look around for a black, plastic cylinder that would take the place of the transducer.

As mentioned, there's going to be a plug somewhere, that goes into a harness, which then plugs into the back of your Smartcraft gauge. The Garmin is an aftermarket thing - I'm not sure exactly how/where that's tied in. If you look at your electrical schematic (download it if you don't have your manual), it may give you an idea of where the plug is. I think it first plugs into the engine harness - and then there should be a junction box under the helm.

But even so, wiring up the dash isn't as complicated as it seems on a smaller boat - if the plug happens to be closer to the dash.

 

[farwellbooth]

"Typically" you can just listen really close for a faint ticking sound coming from the ducer, indicating it's sending a signal. The blanking plug that David references is, from the factory, tied to the transducer - but I don't see it there. Look around for a black, plastic cylinder that would take the place of the transducer.

As mentioned, there's going to be a plug somewhere, that goes into a harness, which then plugs into the back of your Smartcraft gauge. The Garmin is an aftermarket thing - I'm not sure exactly how/where that's tied in. If you look at your electrical schematic (download it if you don't have your manual), it may give you an idea of where the plug is. I think it first plugs into the engine harness - and then there should be a junction box under the helm.

But even so, wiring up the dash isn't as complicated as it seems on a smaller boat - if the plug happens to be closer to the dash.

I have the plug. The boat is also on my boat lift so I don't really need the plug.

The Garmin back bone plugs into a cable coming off the engine. Depth and temp data display on both the Smarycraft and Garmin.

I'll take closer look but hope I don't have to go to the gauge in the helm. I wired the Garmin including the back bone and it's painfully tight in there, 20 foot boat. They zip tie the wires to a bunch of other wires. Would rather not have to redo all of that to the helm.

And the transducer part isn't available anymore, local SeaRay is trying to figure something out.

 

[ColoSR]

Airmar lists your transducer on their website on the cross reference list, go to http://www.airmar.com/xref.html and put in 44-134-1-01. You can track that through to Gemco via the where to buy section. Its likely that they can order one for you if it isn't off the shelf.

 

[juggernaut1]

Looking at the sticker on the cable it is showing a 20 degree tilt transducer. You can't buy the part through Airmar because it has a proprietary plug on the cable that plugs into the harness that provides data to the Mercury smartcraft system.

I changed my transducer out last year (different boat but similar Airmar transducer family). The transducer is plugged into the harness on my starboard motor.

You should see a collar near the lower part of the transducer. Simply cut the wire ties on the collar (if you have any) and unscrew the collar and pull the transducer out of the housing Clean out the housing, apply the supplied grease to the o rings on the transducer and install. Instal the cable tracing the path of the original.

My below link contains the current part numbers for the 20 degree and 0 degree tilt transducers. They also come in a 12 degree tilt. As mentioned above your cable sticker is showing a 20 degree tilt transducer which suggests the transducer is mounted off the centre of the hull. In contrast, mine was located in the centre of the hull requiring the 0 degree tilt transducer.

Hope this helps.

http://www.clubsearay.com/index.php...craft-depth-temp-sensor-aka-transducer.90373/

 

[FastMarkA]

Run a Google Search for this transducer, and you'll see they fail regularly.

I just replaced mine this Spring (depth was working; temp was not).

Even the new replacement acts weird at times; it will show the depth at my berth as being 100'+ when I know it's 20'.

These are garbage, but fortunately they're not terribly expensive to replace, and it's an easy job.

 

[Bob Comstock]

I tried every search possible to locate the part that superceded 888828A21 and finally found the replacement part is 79-8M0122888 and available from Partsvu or mercruiserparts. Good luck everyone.