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D R I V E R S H A N D B O O K
Interior Compartments
Several interior compartments provide convenient access to service-
related components. These are not storage compartments, and
should only be opened for service purposes. Of these compartments,
the one most applicable to the Driver is the electrical Power Distribu-
tion Unit (PDU), which contains the main fuse panel.
⚠
⚠
C AUTION!
C AUTION!
The PDU, entrance door header,
and wiring channels described in this section are
not storage compartments. Do not place loose
items in these compartments.
Power Distribution Unit (PDU).
The large black cover below the cen-
ter of the dash is the chassis electrical panel for the
VISION
, and is
an area of primary importance to service technicians troubleshoot-
ing electrical and device communications systems. The PDU is also
referred to as Zone A of the Multiplex electrical system because it
contains the Main Bus Controller module.
The PDU contains chassis fuses used in the
VISION
. A chart on the
inside of the cover identifies the individual fuses. The PDU cover is
easily removable without tools, secured by two thumbscrews, one
on each side of the cover near the top.
Power Distribution Unit
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