Starting - Volvo 9700 Manual

Starter switch
The starter switch has four positions:
0. Stop position
The ignition is turned off.
I. Intermediate position
Some electrical components can be
used. The steering lock is deactivated.
II. Ignition position
The ignition is turned on. Preheating
active.
III. Start position
The engine is started. This is a spring-
return position.
In addition to the intermediate position,
an additional function is activated just
between position I and II. This function
acts as the traditional main switch and
activates/deactivates ARMS.
NOTE
The key can only be removed from the
starter switch in the stop position.
Steering wheel lock is activated when
the key is removed from the starter
switch, and deactivated when turning the
key to the intermediate position (position
I).
ARMS (Automatic Reset of Main
Switch)
Automatic Reset of Main Switch (ARMS)
is a function that monitors the battery
voltage in the consumer batteries.
ARMS limits discharge of consumers
batteries in case some electrical
components are activated while the
engine is not running, and automatically
turns off the power when the battery
reaches +30.
ARMS is activated and turns off the
power supply when the following
conditions are met:
• Handbrake is applied
• Ignition has been turned off for 120
seconds
• Battery voltage drops below 23.5 V

Starting

Starting the engine
To activate the 24V electric system,
depress the main switch. The system
performs a self-check.
Ensure that the parking brake is applied
and selected gear in position N, neutral.
Turn the starter switch to ignition
position.
Intake air heater
If air intake heating is required, it starts
automatically and a control lamp
illuminates in the instrument cluster.
It can take up to 50 s, depending on the
temperature of the coolant.
Function test
When the ignition is switched on, a
control system in the bus makes a
function test of indicators and control
lamps in the instrument cluster.
Starting
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