5 Star Tuning - Voltage to Low? Error "110BE"

[lanthony2020]

Hello, I have a nice 2003 Safari Trek 3011 on an F53, V10. I have been trying to load a 5 Star Tune via SCT Scanner/Tuner and getting "110BE" error code. SCT and 5 Star have troubleshot this to no avail. We together tried all there tricks and new tunes and reformatted scanner, etc..

The problems: This code most likely appears because the SCT scanner will not unlock PCM without 12 Volts "usable". I have a new AC/Delco 65/750 AGM and showing 12.7 on house V meter (chassis).

By the time I turn on the Key and have the SCT running, voltage drops below 12v and it fails. I have pulled fuses, shut down the "Box", and finally pulled the Hydromax fuse last night. Now at 11.9v. Having a charger on seems to not help once ignition is turned on.

What other fuses could I remove that might help here? Anyone have any experience with SCT and F53 that had this problem?

Thanks,

LAN

[dickandlois]

LAN,

I have been reading and rereading your post and I wonder if by chance you have a connection or connections with a high resistance-- if everything else is working normally.

On a coach that is around 12 years old, there could be a bad ground connection - the first item(s) I would check are the connections to the frame. Sounds like you have recently replaced the batteries and serviced the battery connections) then look at all the ground straps often running between the frame and engine, the ground straps often used to create the multiple common ground points for all the circuits.

Also, you mention the voltage drop - have you had the current load checked on the batteries as you start getting set up to up date the system, just how much of a load do you have?

Do you have the coach plugged into shore power with the charger running when going through the setup to update the SCT?

Appears to me that you have a voltage drop caused more from resistance then load all things being equal !

Rich.

While reading one of the SCT manuals - this information was interesting:

Can I tune more than one vehicle with this programmer?
- One vehicle tuned at a time. You may return to stock and tune another vehicle up to 5 times. My question - does one need to purchase more re-tune time? or pay to have files cleaned and reset in the system?

[lanthony2020]

Thank you for sharing your experience and ideas. Worth having the grounds serviced. Found that on a "Good Sam" post today. My research shows a ground at the back of the gas tank for the coach builder. I assume there is one more from engine to frame. I am not aware of any others?

I notice a buzz with the key on. Appears it is the Daytime Running LIghts relay? Could this be related? Seem that I came across a thread that mentioned this as a possible short? Possible ground? Any thoughts here? When I turn the lights on, it goes away?

Thanks,

LN

[dickandlois]

I notice a buzz with the key on. Appears it is the Daytime Running LIghts relay? Could this be related? Seem that I came across a thread that mentioned this as a possible short? Possible ground? Any thoughts here? When I turn the lights on, it goes away?

LN, The buzzing relay - could very well be due to a poor ground - it is interesting that the buzz goes away when the lights are turned on!

My first thought - regarding the relay you mentioned, is it could be the accessory circuit relay? That could be the source of the poor or low voltage you are experiencing at the ACT!

You might look closely at the relay and see if it matches any of the others used on the coach and switch 2 of them around. If the buzzing stops - See if your voltage reading at the ACT reads 12 volts or better!

Should you get a better reading then the relay might be the culprit! However, if the relay still buzzes - then try to find the ground connection side of the relay and trace it back to it's ground point, also check all the connectors are tight and clean.

Tracing the ground back through all the wire bundles is a pain for sure, but it might be time well spent.

Any feedback from you would be helpful.

Rich.

[lanthony2020]

Thanks Rich. Unrelated AC out and tank monitor on panel??? Went through all the fuses in the "motorhome" box panel in Driver's side bay #1. Just discovered this. Don't like to admit this. Everything looked good. I pulled every fuse and resinserted. Buzzing stopped and AC/tank monitor all working fine again???

I am taking the MH into the dealership tomorrow for a transmission service and "Ground" maintenance. They thought I was crazy, "Ground Maintenance". The Ford Service Manager agreed to check/clean the Ford grounds. While there, I am having Ford plug into the PCM and check if any updates are needed or if any tunes happen to be in there. Having problems installing my 5 Star tune. Have the whole Banks System (-) Ottomind, installed?

We might know more tomorrow. I am disabled after three surgeries and one or two more coming up, right now or I would be all over this and enjoying every minute of it. As it is, trying to research so I can pass along to mechanics or friends that are helping.

Thanks,

LN