I-Start System Power Relays - Volvo 9700 US/CAN 2016 Driver's Handbook Manual

136 Starting and driving

I-Start system power relays

The I-Start system have a two power relays
that are part of the system: .
•
Body relay (K400) which doing the
separation between consumer batteries and
body loads. This power relay its controlled
by MCM (Master Control Module).
•
Split relay (K300) which connecting
both chassis and body electronics. This
power relay its activated by the ignition
key position II to refer the ignition key
positions, see the following section in this
manual: "Ignition switch", page 46.
Due to K300 power relay control by the
ignition key position II, the batteries sets will
be put in parallel before starting, providing a
higher CCA (Cold Cranking Amps), helping
with the cranking.
Note: Both power relays have a decal in three
languages for a better identification.
K300 power relay decal.
K400 power relay decal.
W0111071
W0111072