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Cab Load Disconnect Switch
WARNING
Turning the cab load disconnect switch (CLDS) to
the off position does not disconnect the connec-
tion between the battery and the starter. To work
on the vehicle safely, the negative leads must be
disconnected from the battery.
IMPORTANT: The ignition should be turned off
before turning the CLDS to on or off.
The CLDS is used to avoid excessive draw on the
battery when the vehicle is parked for an extended
period of time by disconnecting (or opening) the con-
nection between the battery and the most of the ve-
hicle electrical system.
The CLDS may be mounted:
•
inside the cab on the outboard side of the
driver’s seat;
•
at the battery box;
•
outboard on the left frame rail.
See
Fig. 3.6
for an EPA07 CLDS; see
Fig. 3.7
for an
EPA10 and newer switch.
If the CLDS is turned to the off position while the ve-
hicle is running, the emergency power system will
activate. The powertrain PDM will receive power from
the emergency power feed, but the batteries will not
be charging. See the
Emergency Power Supply
heading below for details.
Emergency Power Supply
The Cascadia electrical system has an emergency
power circuit that supplies battery power for exterior
lighting. This assists vehicle visibility in the event a
MEGA fuse is open circuit. The emergency power
circuit is live even when the CLDS is turned off.
The emergency power supply feature allows for the
vehicle to be driven off the highway and for the exte-
rior lighting to remain on in the event of a SAM Cab
or SAM Chassis failure. The emergency power sup-
ply will cause certain exterior lamps to flash (depend-
ing on if it is the SAM Cab or SAM Chassis that
failed), indicating that the vehicle is disabled.
06/15/2007
f545073
1
2
1.
MEGA Fuse Junction Block
2.
Main Ground Junction Block
Fig. 3.2, EPA07 MEGA Fuse Junction Block
02/27/2012
f545682a
1
3
2
4
1.
Powertrain PDM (PT-PDM)
2.
Inline Fuse, Auxiliary PDM
3.
SAM Chassis
4.
Powernet Distribution Box (PNDB)
Fig. 3.3, Engine Compartment Power Distribution
Components
Electrical System
3.3
Содержание cascadia
Страница 1: ...Driver s Manual CASCADIA Part Number STI 478 Publication Number STI 478 6 ...
Страница 106: ...9 Cab Features Windows 9 1 Mirrors 9 1 Cab Amenities 9 1 Sleeper Amenities 9 2 ...
Страница 110: ...10 Engine Starting Operation and Shutdown Engine Starting 10 1 Engine Operation 10 2 Engine Shutdown 10 4 ...
Страница 129: ...13 Brake Systems Air Brake System 13 1 Meritor WABCO Antilock Braking System 13 3 Engine Brake 13 5 ...
Страница 163: ...16 Drive Axles Differential Locks 16 1 Two Speed Drive Axles 16 2 ...
Страница 167: ...17 Steering System Power Steering System General Information 17 1 Power Steering Systems 17 1 ...
Страница 180: ...19 Trailer Couplings Air Suspension Dump Valve 19 1 Holland Trailer Coupling 19 1 ...
Страница 206: ...23 Headlight Aiming Preliminary Checks 23 1 Checking Headlight Aim 23 1 Adjusting Headlight Aim 23 1 ...
Страница 229: ...26 Specifications Fuses and Relays 26 1 Replacement Bulbs 26 3 Fluids and Lubricants 26 4 ...