Excalibur 330 ECM Diagnostic Port

[Rusty Axle]

Hey gang, I need some help identifying the ECM diagnostic port on my 2006 Nautique 226 with Excalibur 330 engine.

I ordered a Rinda Techmate Pro so that I would be able to read any codes the engine ECM might set. Here’s pics of the unit and plug:




After staring at the wiring harness for a while, the only plug that looks like it could be a diagnostic port is the narrow 6-pin one next to the red circuit breaker button that has “405051-A” on the cap.





When I remove the cap I see that it has what appear to be 3 yellow fuses with no values showing. Possibly these are jumpers and not fuses? If this is the diagnostic port, then I have the wrong Rinda unit, based on plug shape.




Here’s more pics of the engine and wiring harness. It’s a V drive, so when I use “front” and “rear”, I’m using hull orientation and not engine orientation.


Starboard front:





Starboard Rear:





Port Front:






Port Rear:





Here's a pic of the front:





My Techmate Pro is an expensive paperweight at the moment, so any help resolving this would be greatly appreciated.

[JayG80]

My 2007 Excalibur 330 is drive by wire with econtrols ecm. The diagnostic port is near the thermostat. Top of engine on the oil fill cap side.. Mine has 2 ports coming out of a wire loom with a sticker that says Engine diagnostics.

[JayG80]

Here is the port with adapter 94026 Diacom attached

[JayG80]

Picture #2 - Without adapter plugged in. My ECM and wiring may be different. I use the box shaped port (upper one with the gray cover) for reading the DiaCom information and had to buy a 2nd adapter to the flat port (lower flat 6 pin, black cover with green pins) when I downloaded a new ECM calibration file after replacing throttle potentiometer.

[jpwhit]

I’m not as familiar with Techmate as full Diacom, but I assume this is the same. Did you order the correct adapter to match up to your boat? I always order the Diacom setup with the full adapter set because it’s only universally useful with all the adapters.

[JayG80]

I’m not as familiar with Techmate as full Diacom, but I assume this is the same. Did you order the correct adapter to match up to your boat? I always order the Diacom setup with the full adapter set because it’s only universally useful with all the adapters.

my 2007 uses 94026, looks like 2006 uses 94005

[Rusty Axle]

Thanks guys for the helpful responses.

The good news is that my Rinda unit has the 94005 connector. Now if I can just find the port....

Here's a pic of the same area on my engine. There are two ribbed plastic-shrouded wires running beneath the black-booted thermostat connector, which is just under the black rubber water hose. One with a blue stripe and one all black. They appear to continue to the underside of the engine. I gently tried to pull them to see if a connector might come up however they appear to be secure. There is nothing underneath the spark arrestor.




Later today I'll take the panels out of the starboard compartment and see if the ECM port is in a less accessible area near the pulleys/belts.

[JayG80]

https://www.planetnautique.com/vb5/f...330-vortec-5-7

This guy posted about the location on his 2003 and says "It's called a data link connector it's on the starboard side of the top of motor near the back and it is plugged into another connector. Just unplug a few until you see this one pictured below."