1. Battery Control Center (Con’t)

2. Battery Control Center (Con’t)
F20
Blank
Changed to circuit breakers by Rev K
F1 25A
MAXI
Driver Pwr Seat
F15 3A
LP Det (Coach)
Pass Pwr Seat
F14 15A Luggage Bay Lights
F2 25A
MAXI
F16 10A
Radio Switch
F3 20A
Step Motor
F17 3A
AUX Start Dash Switch
F4 3A
Step Switch
F18 3A
Solar Panel
F13 15A
Fog Lights
F5 3A
LP Det (Chassis)
F19 5A*
Coach & Chassis Bat Disconnect Switch Coil Power
F6 3A
Ignition Signal
F21 15A Service Bay Lights
F23 10A* AUX Hot
* Changed to 10A by Rev H
F7 15A
Spare IGN
* Changed to 5A by Rev J
F8 15A
Spare
F9 20A
Power Mirror
F10 15A
Horn
F11 10A
Leveling Jacks
F12 15A
Dash Fan
F22 3A
AUX Start Relay Pwr

3. Battery Disconnect Switches

4. Battery Control Center (Con’t)
Battery Disconnect Switches
Each switch controls a magnetically latched relay with power applied to coil only momentarily to latch the switch
Unlatch by applying current in the other direction
If chassis or coach battery is disconnected , it is automatically connected if ignition is switched on
A lockout feature prevents disconnecting the chassis battery when the ignition switch is on

5. Battery Control Center (Con’t)
What does NOT work with Coach battery disconnected:
12v Lighting / 12v Power Outlets
Water Pump / Dash Radio / Bedroom Radio
Furnace / Refrigerator / Water Heater
Air Conditioners
Generator

6. Battery Control Center (Con’t)
What does NOT work when Chassis battery disconnected with ignition switch OFF:
Steps
Clearance lights
Fog lights
Slides
Leveling Jacks
Turning On the ignition switch automatically causes both battery disconnect relays to change to the connected position
The chassis battery cannot be disconnected using the disconnect switch with ignition ON
The coach battery can be disconnected using the disconnect switch.

7. Battery Control Center (Con’t)
What does NOT work when both Chassis battery and Coach battery are disconnected:
Propane detector
Propane automatic shutoff valve closes to prevent any propane use while the detector has no power

8. Battery Control Center (Con’t)
Charging and Auxiliary Starting Relay
Located on back wall in electrical bay
Charging
Automatically connects chassis and coach batteries in parallel to allow charging of both when:
Either battery voltage reaches 13.2
Relay automatically isolates batteries from each other when voltage drops to:
12.6 with ignition off
12.2 with ignition switch on.
Auxiliary Starting
Dash switch used to connect chassis and coach batteries in parallel while switch is held ON
Start engine with dead chassis battery
Start generator with dead coach battery

9. Freightliner 12 Volt Fuses and Relays
Freightliner Panel #1 Under Dash
Freightliner Panel #2 Under Dash
Neutral Sense Relay
Heater Relay
ACC 1 Relay
Service Brake Relay
Horn Relay
IGN Relay
Cab Bat Sply Amp
Cab Bat Sply Amp
Cab Bat Sply Amp
Heater Relay Sply 30 Amp
Horn Sply Am
Brake Pwr Sply 20 Amp
Maxi Fuses
WPR 25 Amp
ACC 1 10 Amp
ACC 2 10 Amp
IGN 1 10 Amp
IGN 2 10 Amp
Brake Lamp Relay
VDC Bay
Panel Lamp 10 Amp
Marker SW Pwr 15 Amp
Dome Lamp 10 Amp
Head Lamp 15 Amp
Exhaust Brake Relay
Air Drain Valve Amp
Marker Lamp 30 Amp
Tail Lamp 10 Amp
Air Dryer 15 Amp
Instrument Cluster Amp
IGN Amp
ABS Pwr 2 10 Amp
ABS Pwr 1 10 Amp
Exhaust Brake Pwr Amp
DRL IGN Pwr Amp
DRL MOD Pwr Amp
Turn Signal 10 Amp
Fuel Pump Relay
Cummins Engines Only
Ignition 2 Relay FL#
Marker Lamps Relay FL#
Cruise Disengage Relay
ABS ECU Relay FL#
DRL IGN Relay
Air Dryer/Drain Valve Relay
Ignition Sense Relay
ABS Light Relay
Left Headlamp Relay
Exhaust Brake Relay
Right Headlamp Relay
Park Brake Relay

10. Other 12 Volt Fuses and Relays
Bedroom Panel
Electric Service Bay
Under Dash
Cigarette Lighter Amp
Pass Seat Heater Amp
Thermostat 5 Amp1
Water Pump 15 Amp2
Left Turn Amp
Wipers Amp
Bath fan, lights aft florescent 15 Amp
LR driver side lights 20 Amp
Clearance Lights Amp
Backup Camera Amp
Driver Seat Heater Amp
Kitchen fan, florescent Amp
Electric4 Awning Amp
Condenser Fan Amp
Neutral Safety Common Amp
Appliances 20 Amp
Right Turn 20 Amp
15 Amp?
BR radio, lights Amp
Poarch, entry, fwd florescent 20 Amp
Heater Blower 30 Amp
Dash Radio Amp
Stop Hazard 20 Amp
ICC Power 15 Amp
Power Visors 7.5 Amp
Energy Mgt System Amp
Sat Ant, TV Booster Amp
LR passenger side lights Amp
LR 12V Outlet 15 Amp
Notes:
1. Also 2 Amp fuse in thermostat
2. Changed to 15 Amp for new water pump. Was 10 Amp
3. Also 3 Amp fuse on 50A Smart EMS circuit board
4. Also 10 Amp fuse in awning control box above passenger door

11. Power Gear Fuses and Relays
Leveling Jacks Controller – Located Under Dash Near Jack Controls
Left Rear Leg 3 Amp
Right Rear Leg 3 Amp
Dump Valve 3 Amp
Front Legs 3 Amp
Slide Out Controller – Located in Electric Service Bay
Relay Tyco VF4-15F13
15 Amp Auto Reset CB
20 Amp Slow Blow Fuse
20 Amp Auto Reset CB
25 Amp Slow Blow Fuse
Connector
Connector
Connector
Bedroom Slide Out
Pass Side Slide Out
Driver Side Slide Out

12. Conclusion Inverters and Batteries are a good things
Maintain and test your batteries
Keep a supply of spare fuses and bulbs
Get a copy of your wiring diagram
Have the basic tools to troubleshoot problems
Use the corporate knowledge of DOAI members for help