Battery Control Center Cont

1
Battery Control Center (Cont)
2
Battery Control Center (Cont)
F20
Blank
Changed to circuit breakers by Rev K
MAXI
F1 25A
Driver Pwr Seat
F15 3A
LP Det (Coach)
Pass Pwr Seat
MAXI
F2 25A
F14 15A Luggage Bay Lights
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 (Cont)

• 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 (Cont)

• 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 (Cont)

• 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 (Cont)

• 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 (Cont)

• 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
VDC Bay
Freightliner Panel 1 Under Dash
Panel Lamp 10 Amp
Marker SW Pwr 15 Amp
Dome Lamp 10 Amp
Head Lamp 15 Amp
Exhaust Brake Relay
Air Drain Valve 15 Amp
Marker Lamp 30 Amp
Tail Lamp 10 Amp
Air Dryer 15 Amp
Instrument Cluster 10 Amp
IGN 3 30 Amp
ABS Pwr 2 10 Amp
ABS Pwr 1 10 Amp
Exhaust Brake Pwr 10 Amp
DRL IGN Pwr 10 Amp
DRL MOD Pwr 10 Amp
Turn Signal 10 Amp
Fuel Pump Relay
Cummins Engines Only
Ignition 2 Relay FL 23-11276-011
Marker Lamps Relay FL 23-11276-011
Cruise Disengage Relay
ABS ECU Relay FL 06-39301-000
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
Pass Seat Heater 7.5 Amp
Cigarette Lighter 10 Amp
Water Pump 15 Amp2
Left Turn 20 Amp
Thermostat 5 Amp1
Wipers 30 Amp
Bath fan, lights aft florescent 15 Amp
LR driver side lights 20 Amp
Driver Seat Heater 7.5 Amp
Backup Camera 3 Amp
Clearance Lights 20 Amp
Neutral Safety Common 10 Amp
Condenser Fan 20 Amp
Kitchen fan, florescent. 20 Amp
Electric4 Awning 15 Amp
Appliances 20 Amp
Right Turn 20 Amp
15 Amp?
Heater Blower 30 Amp
BR radio, lights. 20 Amp
Poarch, entry, fwd florescent 20 Amp
Dash Radio 7.5 Amp
Stop Hazard 20 Amp
ICC Power 15 Amp
Power Visors 7.5 Amp
Energy Mgt System3 5 Amp
Sat Ant, TV Booster 15 Amp
LR passenger side lights 15 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
Connector
Connector
Connector
Bedroom Slide Out
Driver Side Slide Out
Pass 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