Arms (Automatic Reset Main Switch) - Volvo 9700 US/CAN 2016 Driver's Handbook Manual

ARMS (Automatic Reset Main Switch)

The I-Start system in order to secure energy
for cranking, the ARMS (Automatic Reset
of Main Switch) relay was introduced. The
ARMS relay is responsible for shutting
down +30 power source to prevent starter
batteries from getting drained when 23,5
V are detected for more than 120 seconds.
The control is made by BBM (Body Builder
Module) through ARMS (Automatic Reset
of Main Switch) relay, located in the fuse
box inside to the right hand side batteries
compartment.
This function will only act if the ignition key
is on position I + a click, to refer the ignition
key positions, see the following section in
this manual: "Ignition switch", page 46.
ARMS failure detection
When a fault is detected on the ARMS
(Automatic Reset of Main Switch) relay
output the BBM (Body Builder Module) will
generate a fault code in case of an ARMS
(Automatic Reset Main Switch) relay open
circuit and an icon and/or lamp and text
shall be displayed in the driver´s information
display.
Note: For more information related to I-Start
fault codes and symbols displayed in the
driver´s information display related to this
system; see separate operating instructions:
"I-Start".
Starting and driving 135
ARMS relay inside to the chassis fuse
box, located in the right side batteries
compartment (starter side batteries).
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