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Unread 05-12-2010, 05:46 AM   #1
nod
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Default re-setting the obc

I was having a problem with my 2005 CC DS. It is a Regen cart. In the process of finding the mcor was bad, a new obc was put in the cart. When that didn't solve the problem the old obc was put back on. The cart is running now. When I charge the batteries the state of charge meter shows in the high red. Also I can see where water boiled out of the batteries (some, not a lot). The cart never did this before. Charger is working perfectly and shuts off at some point during the night. No problems charging my 1997 CC. I was looking at the sticky for re-setting the obc. This guy was telling me with a "Q" cart you remove the positive cable not the negative cable????? Any help with why the cart is over charging and what cable to remove for re-setting would be appreciated.

thanx, nod
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Unread 05-12-2010, 05:56 AM   #2
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Location: FT Lauderdale FL.
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Default Re: re-setting the obc

[QUOTE=scubabud;393358]That orange light is suggesting that your batteries are getting low when you are running your cart even if they aren't. Mine starts to flash around 48.4 volts or 50% of pack once settled. It still sounds like your OBC isn't reading things right so I'd try and reset it based on the stickies at the top of the thread once again. They can go bad as well but if you have a good battery pack showing 50.93+ when fully charged and it can last you a long time it must be the way the OBC is seeing things.

Resetting the OBC, (taken from AllTrax)
To reset the OBC the following must be done in this
order:
Key Switch to Off

Forward/Reverse to Neutral

Tow/Run Switch to Tow

Disconnect the Battery NEGATIVE (–) wire
from the Battery Minus terminal on the battery
pack.

Put the Tow/Run to Run

Forward/Reverse Switch to Reverse

Key Switch to On

Lock the throttle pedal down
The reverse buzzer will sound and go off in about 30
seconds. Leave the cart like that for 5 min to cause the
OBC to reset.
To reconnect the OBC back into the system:

Key Switch to Off

Forward/Reverse Switch to Neutral

Tow/Run switch to Tow

Reconnect the Batt – wire to the battery minus
terminal on the battery pack.
Once the OBC has been reset, the cart can be
troubleshot. There is always a chance the OBC has
completely failed and the reset process will not fix the
problem.

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Unread 05-12-2010, 07:45 AM   #3
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Default Re: re-setting the obc

This is the Procedure from my Precedent Manual:

TEST PROCEDURE 17 – REBOOTING THE ONBOARD COMPUTER
See General Warnings, Section 1, Page 1-1.
It is possible the onboard computer (OBC) can become “locked up”, causing the OBC solenoid lockout circuit
to malfunction. If this condition is suspected, restart the computer as follows:
1. Disconnect the battery cables as instructed. (I remove the Neg first, then the Pos.) See WARNING “To avoid unintentionally starting...” in General Warnings, Section 1, Page 1-1. See following NOTE.
NOTE: Wait at least 90 seconds for the capacitors in the speed controller to discharge. The capacitors in the speed controller must be fully discharged in order to reboot the OBC.
2. Place the Tow/Run switch in the TOW position and connect the battery cables, positive (+) cable first.
Tighten battery terminals to 110 in-lb (12.4 N·m) and coat terminals with Battery Terminal Protector Spray (CCI P/N 1014305) to minimize corrosion.
3. Place Tow/Run switch in the RUN position.
4. Test drive the vehicle. If the vehicle functions normally the problem is corrected. If the problem still exists, refer to Wiring Diagrams on page 11-2.
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Unread 05-12-2010, 08:59 AM   #4
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Default Re: re-setting the obc

To determine IF the charger is 'over charging' we would need to know the pack voltage at the end of the charging cycle. Perhaps the batteries are over full and the old obc was not bringing the pack up high enough for them to overflow?
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Unread 05-12-2010, 07:59 PM   #5
nod
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Default Re: re-setting the obc

The batteries are new (2 months). The cart has the original obc in it. The new obc didn't fix the problem so the old one was reinstalled. I will check the pack this weekend. Give some more run time before I charge the cart. The water level in the batteries is how they came. I check them quite a bit and haven't to add water yet.

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