OBDI or OBDII

[richard]

Don't know what kind error scanner I should use, the boat is 2001 Super Air Nautique, the connector as shown in photo

[DanielC]

OBD1 and OBD2 are automotive standards. They do not apply to boats. the plug may fit into a Ford STAR tester, if you have access to one, but the Ford STAR testor requires you to enter vehicle information, like 1994 Ford Ranger pickup, with 3.0 Liter engine, to work.

In your picture, grounding the connection upper left, in the plug commands the fuel pumps to come on, with the key on, engine off.

There is a way to connect a test light, and also make another connection in the single wire plug next to the test connection you have a pictures, and the plug above, and with the key on, engine off, it will flash any trouble codes on the test light.

I will look that up later, for you.

[richard]

Thanks DanieIC,I will love to hear how it works with a light, also can the popular OBDII diagnostic scanner work with GT-40 ?

[DanielC]

Second question first.
The OBD2 comnnector is on autombiles only. you will not find it on a boat.

Take the connector, in your first picture, and hold it narrow side up, or the side with only two connections up. From left to right, the top connections are 1, and 2. Four connections across the bottom, 3, 4, 5, 6.

Connection 6 grounded, with the key on, causes the fuel pump to run, anytime the key is on.

With the key off, connect pin 2, on the "doghouse" connector to the extra lead, right by it, in the same pigtail, off the wiring harness.
Connect the the ground lead on a 12 volt test light to battery positive. The big red cable on the starter is one place to connect to.
Put the probe of the test light into pin 4 of the doghouse connector.

When you turn the key on, the fuel pumps will run, for about a second. They then run a shorter period of time, and the test light has a very brief dim flash.
The test light will then flash any codes. It will flash this code three times.
Code 1, 1 is normal, system pass, in Ford talk.