1485 Jacobs Rd.
Deland, FL 32724
386.738.7307
P/N 53-00606-100 Rev. D 032619
www.intellitec.com
Intellitec
SERVICE MANUAL
BATTERY CONTROL CENTER -
MINI DIESEL
TROUBLE SHOOTING - Battery Disconnect
A. Both relays fail to operate.
B.
One relay fails to operate.
C.
Main battery relay fails to operate.
D.
Coach functions operate when coach is plugged in, but not from the battery.
1. Batteries may be dead. Check for voltage at the top end of F19 which is the feed from the higher of
either the auxiliary or main battery. (F19 is located at the top left center of the printed circuit board).
The voltage on F19 should be at least 11 volts. If the voltage is less, charge either battery. If the
voltage is more than 11 volts, continue.
2. F19 may be blown. Check for voltage at the top of F19 using a test light. This voltage should be
the same as at the bottom end. Replace fuse F19, if the voltage is not the same.
3. Ground lead to switches may be open. Check for ground and 12 volts on the "I" and "S" test points
on the printed circuit board of the Disconnect Relay, while an assistant presses the Battery
Disconnect switch in the coach.
1. Wiring or switch may be faulty. To check the operation, have an assistant operate the Battery
Disconnect switch inside the coach. Check for voltage on the "I" and ground on the "S" terminal
at the test points on the printed circuit board.
2. Disconnect Relay may be faulty. If at least 11 volts is available on the "I" or "S" terminal
and the relay fails to operate, replace the relay.
1. Ignition may be on. Check to be certain that the switched-ignition is 0 volts.
2. Interlock relay may be faulty. Check for 12 volt power feeding switch at plug J2 pin 8.
3. There may not be 12 volt power to the switch. If there is not 12 volts check fuse F19.
1. Circuit breakers feeding converter may be open. Reset circuit breakers in box.
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