javalina tank display

July 30, 2018, 04:15:52 pm

I have a javelina brochure that explains how to calibrate my tank monitor display. It says to "short pin 15 to ground" when tanks are empty and do the same thing after I fill the tanks. Does short pin to ground mean to connect a wire to ground and then connect the wire to the pin? Also where is the computer unit located? My fresh tank shows empty when it is still about a third full and my black tank shows almost half full when it is empty. Has anyone else calibrated their javelina monitor system?

Re: javalina tank display

Reply #1 – July 30, 2018, 06:45:28 pm

Welcome, glad you have a question. This is the place for answers and help.

Let's see, what coach are you talking about? Model and year.

On my model, see signature below.. it is in the pop up dash cover. Some times this unit goes bad. Mine does the same thing... the sensors sometimes get stuff on them and I wash out my grey/black tanks..

Fresh seems like that procedure worked...
More folks will chime in soon.

Re: javalina tank display

Reply #2 – July 30, 2018, 07:01:31 pm

FOUND IT, BY SEARCH FUNCTION

Reply #6 – 9 years ago
Yahoo Message Number: 33108
Here is an excerpt from the Javelina AUDIT 2U9 Tank Monitor
System Operations Manual:

CALIBRATION (Model 2U9)
The auto calibration feature of this computer automatically and easily compensates for variances in tank thickness, and harness resistance. This feature, once activated, stores the calibration data in non-volatile memory on board the computer. The calibration data is accessed each time the computer is turned "on". Once the calibration data is stored the auto cal feature need not be used again unless a tank sensor or tank is replaced. The auto cal feature only affects the " Fresh", "Grey" & "Black" holding tank levels.The auto cal has no effect on the Volt, LPG or compass readings.

To activate the Auto Cal feature proceed as follows:
1. Empty the Fresh, Grey & Black water holding tanks.
2. Turn the Computer "on" and select the holding tank screen.
3. Locate connector pin #15 located on the 24 pin Deutsch
connector on the end of the computer. Once the tanks are emptied, momentarily short Pin #15 to ground. In the center of the screen you will notice a "wait" and then a "done" message. When the word "done" appears it means the computer has stored those readings as empty readings.
4. When "done" appears, fill the tanks to their fullest desired
levels. Once the tanks have been filled to the desired levels and allowed to settle (approx. 1 minute) short Pin #15 to ground. Again, notice a brief "wait" message followed by a "done" message. This means that the computer has taken the tank readings and stored them as "FULL" levels.
5. Turn "off" the computer via the front panel switch, wait 3
seconds and turn the computer "on". The "done" message is gone and the computer is calibrated. The computer may be calibrated as many times as necessary.

Remember, once the final "done" is displayed the computer must be turned "off" and then back "on" for the reading to be loaded!

Foretravel Owners' Forum For owners and Fans of Foretravel Motorcoaches September 15, 2025 ...