DIACOM PC-Based Marine Diagnostic System - Windows 11, 10, 8, and 7
DIACOM® Marine version 3.5
The undisputed workhorse of the marine service industry. Used by thousands of marine dealerships worldwide Diacom Marine harnesses the power of your Windows based PC or tablet to form a sophisticated EFI diagnostic system. Diacom Marine allows a technician to quickly view engine performance data and zero in on malfunctions. Easily record and graph data from all accessible EFI system sensors and controls to capture elusive intermittent problems. Diacom Marine includes an extensive set of diagnostic features and has the broadest engine support in the marine industry. Compatible with Windows 11, 10, 8, and 7
The Diacom® PC based marine diagnostic system gives you the power and flexibility you need to troubleshoot today’s advanced EFI systems.
DIACOM® unlocks the computing power of your Windows-based notebook or netbook PC and provides state-of the-art features to pinpoint EFI system problems quickly and accurately.
In addition to supporting sterndrive and inboard marine engines, DIACOM® now supports Mercury outboards.
FEATURES...
- View EFI system data to monitor engine performance
- Read and reset system fault codes
- Exercise outputs and run EFI system tests
- Record live EFI data to capture elusive intermittent events
- Print hardcopy reports and export data to other PC programs
- ECM reflash capability for factory authorized marine dealers
- Plus many other troubleshooting and productivity features
This kit includes the following:
Diacom CD, USB cable, and the following network adapters:
- 94005 MEFI
- 94006 PCM-555
- 94029 CAN
LAPTOP SHOWN IS NOT INCLUDED
ENGINE SUPPORT LIST...
Mercury Outboards
• 2006 - Up Verado I-6: All models: Adapter #94006
• 2018 - Up Verado V8: All models: Adapter #94029 + #94032
• 2002 - Up 4-stroke EFI: 25hp, 30hp (Tohatsu EFI) Adapter #94039 40hp, 50hp, 60hp, (ECM-555) (2002-05) Adapter #94028 40hp, 50hp, 60hp, (ECM-555) (2006-09) Adapter #94006 40hp, 50hp, 60hp, (ECM-70) (2010-Up) Adapter #94029 + #94032 75hp, 90hp, 115hp (Yamaha EFI) Adapter #94038 75hp, 90hp, 115hp (ECM-555) (2007-13) Adapter #94006 75hp, 90hp, 115hp (ECM-70) (2014-Up) Adapter #94029 + #94032 150hp (non-Verado) (ECM-70) (2012-Up) Adapter #94029 + #94032 175-300hp V6 and V8 (PCM-112) (2018-Up) Adapter #94029 + #94032
• 1998 - Up 4-stroke carbureted: 25hp, 30hp, 40hp, 50hp, 60hp Adapter #94011 + #94037
• 2001 - Up Optimax: 2001 thru approx 2006 Adapter #94028 2007 - Up Adapter #94006
• 1998 - 2000 DFI: All models Adapter #94028
• 1994 - Up 2-stroke EFI: 1994 - Up 150hp, 175hp, 200hp, 225hp Adapter #94028 1994 - 1999 225hp(3.0L) Adapter #94011 • 1994 - 1999 2-stroke carbureted: 225hp/(3.0L) Adapter #94011
• 1995-Up Racing 2-stroke EFI: 150hp, 200hp, 225hp, 2.5L, 280hp, 300hp, Contact Us Optimax XS series
MerCruiser
• 1992 - Up EFI engines: 1992 thru 2000 (GM MEFI-1 thru MEFI-4) Adapter #94005 2001 - Up (PCM-555 / ECM-555) Adapter #94006 2008 - Up (PCM-09) (OBD-M diagnostics) Adapter #94023 or #94029 2008 - Up (PCM-09) (G3 factory diagnostics) Adapter #94029 + #94032
• 1996-up Carbureted engines with Thunderbolt V ignition: All models Adapter #94020
MerCruiser D-Tronic Diesels
• 1997 - 2007 2.8L 4-cylinder, 4.2L 6-cylinder Adapter #94014
• 1997 - 2005 7.3L V8 Adapter #94021
Mercury Racing (sterndrives)
• 1998 - Up EFI engines: 1998 - Up HP500 GM MEFI equipped Adapter #94005 2001-up PCM-555 equipped Adapter #94006 2010-up PCM-09 equipped Adapter #94029 + #94032
Volvo Penta
• 1992 - Up Gasoline EFI engines: 1992 - 2005 (GM MEFI-1 thru MEFI-4) Adapter #94005 2006 - 2007 (EGC) Adapter #94024 2008 - Up (EGC) Adapter #94023 or 94029
Crusader
• 1992 - Up EFI engines: 1992 - 2006 (GM MEFI equipped) Adapter #94005 2007 - 2009 (ECM-07 equipped) Adapter #94026 2008 - Up (ECM-08 equipped) Adapter #94023 or 94029
Flagship Marine
• 1992 - Up GM EFI engines: GM MEFI-1 thru MEFI-4 equipped Adapter #94005 GM MEFI-5, MEFI-6, MEFI-7 Adapter #94023 or #94029 Ilmor Marine Engines
• 2009 - Up V10 engines: MV-650, MV-725 Adapter #94023 or #94029
• 2010-Up V8 engines: All models Adapter #94023 or #94029
Indmar
• 1992 - Up EFI engines: 1992 - 2006 (GM MEFI-1 thru MEFI-4) Adapter #94005 2007-Up All models Adapter #94023 or #94029 Kodiak Marine
• 1992 - Up GM EFI engines: 1992 - 2008 (GM MEFI-1 thru MEFI-4) Adapter #94005 2008-Up (GM MEFI-5, MEFI-6, MEFI-7) Adapter #94023 or #94029 Malibu
• 2018 - Up EFI engines: All models Adapter #94023 or #94029
Marine Power
• 1992 - Up GM EFI engines: 1992 - 2008 (GM MEFI-1 thru MEFI-4) Adapter #94005 2008-Up (GM MEFI-5, MEFI-6, MEFI-7) Adapter #94023 or #94029
Panther Air Boats
• 2000 - Up GM EFI engines: Engines equipped with MEFI 1 thru 6 EFI systems GM MEFI-1 thru MEFI-4 equipped Adapter #94005 GM MEFI-5, MEFI-6, MEFI-7 Adapter #94023 or #94029
Pleasurecraft Marine
• 1992 - Up EFI engines: 1992 - 2006 (GM MEFI equipped) Adapter #94005 2007 - 2009 (ECM-07 equipped) Adapter #94026 2008 - Up (ECM-08 equipped) Adapter #94023 or 94029
Seven Marine
• 2012 - Up Outboard EFI engines: All models Adapter #94023 or #94029
GM RamJet Crate Engines
• 2000 - Up EFI engines: RamJet 350, RamJet 502 Adapter #94005 TurnKey Engines
• 2001 - Up MEFI Engines Engines equipped with MEFI 1 thru 6 EFI systems GM MEFI-1 thru MEFI-4 equipped Adapter #94005 GM MEFI-5 Adapter #94023 or #94029
What's New in Version 3.0
? MerCruiser G3 engine diagnostics: Version 3.0 supports G3 CAN based engine diagnostics on 2008 and newer MerCruiser engines equipped with PCM-09 control modules. This support requires Diacom USB cable #94073 with a minimum cable software revision of 31. G3 CAN based engine diagnostics require both adapters 94029 and 94032.
? Mercury Racing G3 engine diagnostics: Version 3.0 supports G3 CAN based engine diagnostics on 2010 and newer Mercury Racing engines equipped with PCM-09 control modules. This support requires Diacom USB cable #94073 with a minimum cable software revision of 31. G3 CAN based engine diagnostics require both adapters 94029 and 94032.
? Mercury Outboard G3 engine diagnostics: Version 3.0 supports G3 CAN based engine diagnostics on 2010 and newer Mercury outboard engines equipped with ECM-70 control modules. These engines currently include 2010-Up 40-60HP, 2012-Up 150HP non-supercharged and 2014-Up 75-115HP four stroke engine models. This support requires Diacom USB cable #94073 with a minimum cable software revision of 31. G3 CAN based engine diagnostics require both adapters 94029 and 94032.
No Returns on this item

Parts orders placed before 2:30 pm EST will normally be shipped the same day (if the item is in stock). If you need your parts asap, FedEx Overnight, second-day air, etc., are also available (Deadline is 2:30 pm Eastern standard time). Engine orders will be processed and shipped within 24-48 hours after payment-in-full is received. For special engine orders, shipping time is based on current stock and build time.
Please Remember - No Walk-Retail is Available See Pickup In-Store Procedure
All part orders must be placed online. You may select “In-store pickup at our company” if you prefer to pick up your order. We will text and call when ready for pickup.
Items under 75 pounds are sent via FedEx in Continental USA. Items sent overseas are sent via FedEx international, or air freight (depending on item weight). FedEx cannot ship to P.O. boxes.
All Packages over $175.00 will require FedEx obtains a signature from someone at the delivery address; from a neighbor, building manager, or someone at a neighboring address; or the recipient can also leave a FedEx Door Tag authorizing the release of the package without anyone present, or you can sign up for FedEx Delivery Manager.
We ship parts and engines worldwide! **MERCURY BRAND ITEMS CAN ONLY BE SOLD AND SHIPPED TO ADDRESSES WITHIN THE UNITED STATES.
Canadian Shipments
Rates for Standard service to and from Canada do not include charges for customs clearance. For shipments from Mexico, routine customs clearance is included. Customs brokerage charges, duties, and taxes will be billed to the importer unless otherwise indicated by the shipper. Some shipments to and from certain locations may require additional time in transit.
Engine Shipping
For a shipping quote, please email sales@michiganmotorz.com or call (248) 524-9600 with your shipping address and contact information. We use different freight carriers to secure the lowest price AND safest delivery. Some of the freight carriers we use are R&L Freight, Con-Way Freight, Estes Express, Pilot Air, USF Holland, Forward Air, Old Dominion, Overnight Express, Watkins, and Dayton Freight. Engines can be picked up at local shipping terminals or dropped off at your location. **Engines are packed in specially designed crates made for that engine**
All oil & lubricating fluids are drained before they are sent out (this is required by our freight carriers). All engines & parts are packed by our shipping department. Engines are then inspected by our shipping manager before they are loaded onto a freight carrier.
**Certain restrictions apply
Returns
For items received as described, a refund of the final invoice price (minus shipping and handling charges and a 15% restocking fee) will be issued. Buyer is responsible for return shipping costs and for sufficiently packing and insuring returned items unless otherwise agreed upon. Refunds will not be issued for damaged merchandise. All returns must be made within 15 days of delivery to you. No refunds for electronic parts if the box is opened. All returns must have an RMA # and invoice #. 15% restocking fee on the return of any complete engine. Please call or email for an RMA #.
Returns must be shipped to: Michigan Motorz, LLC 32333 Mally Drive Madison Heights, MI 48071 (248) 524-9600
If parts arrive damaged in shipment, it is the customer's responsibility to notify the carrier immediately and reject the damaged package. Contact Michigan Motorz regarding the potential damage. A claim will be filed and we will send out the identical part. If parts are damaged in shipment and the customer does not notice damage, please call Michigan Motorz, LLC.

