Section 05 ELECTRICAL SYSTEM
Subsection 02 (POWER DISTRIBUTION)
Fuse box Cover Installation
When installing a fuse box cover, ensure the seal
is properly seated. If the seal has been removed,
ensure to reinstall it as illustrated.
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TYPICAL
1. Wider lip here
Bus-bars
A bus-bar is a conductive aluminum bar with two
or more terminals that plug into the fuse box
contacts in the same way that a fuse does. It
receives current from one terminal and conducts
the current to all other terminals into which it
is connected. The terminals conduct current
through their circuit wires to the electrical com-
ponents.
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BUS BAR
These bus-bars are also used for low power signal
circuits (CAN bus), and for ground circuits with a
common grounding point.
Ground Distribution Bus-bar
The ground bus-bar collects the grounds from dif-
ferent components and connects them to the en-
gine grounds through terminal E5 in fuse box 2
(FB2-E5).
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FRONT OF ENGINE
1. Engine grounds
A cable connected to the engine behind the ex-
haust manifold, is connected at the other end to
the battery ground post to complete the ground
circuit.
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LH SIDE OF ENGINE
1. Battery ground cable
2. Exhaust manifold water inlet fitting
CAN Distribution Bus-bars
The CAN bus-bars in fuse box 1 connect the
LO and HI bars to different CAN enabled com-
ponents. This effectively links the components
together so they may communicate between
each other as required for proper system opera-
tion. Refer to
CONTROLLER AREA NETWORK
(CAN)
for more details.
POWER DISTRIBUTION
As can be seen in the simplified diagram, the
battery directly powers two bus-bars in fuse box
2 (FB2) through terminals A1 and A5, which in
turn redistribute power to other components.
That power is then available for the components
to utilize when they are activated.
Terminals A3 to A4 supply 12 Vdc power through
a 30 A fuse to the iS module for the iS motor.
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