PREVOST H3-45 - Ignition Switch

6-2 Starting and Stopping Procedures
PA-1628Operator's ManualH3-45 COACH
IGNITION SWITCH
IGNITION SWITCH KEY POSITIONS
Coaches may be equipped with an ignition lever
instead of an ignition key.
IGNITION SWITCH LEVER POSITIONS
The ignition switch is located on the lower left side of
the dashboard. The keyed ignition switch has four
positions. The ignition lever has three positions or
four (ACC.) depending on the vehicle configuration:
OFF - In the off position, ignition cannot take place.
The key can be removed when in this position.
The electrical circuits are not activated when the
switch is in this position. Only the accessories
connected directly to the batteries can be activated.
These are:
l The preheater, the preheater timer and the
water pump
l The battery master switch
l The entrance door
l The baggage compartments central locking
system
l The battery equalizer
l The engine and transmission control unit
l The fire detection and suppression system
Maintain the switch in this position when parked
overnight or for an extended period.
CAUTION
When the vehicle is parked overnight or for an
extended period of time, the battery master switch
should be set to the OFF position.
NOTE
The battery master switch is ON when the hazard
flashers are activated, even if the key is in the OFF
position.
ACCESSORIES - To operate the accessories only,
turn the ignition key or lever counterclockwise to the
ACC position. The key cannot be removed in this
position.
The electrical circuits are activated when the switch
is in this position or when the hazard flashers are
activated.
The features enabled when the key is in the ACC
position are all those linked directly to the battery
plus the exterior temperature display, the radio or
entertainment system, exterior and interior lighting.
ON - Set the ignition to on by turning the key or lever
clockwise to the first position. The key cannot be
removed in this position.
The following additional electrical circuits are
activated when the switch is in the ON position:
transmission, engine and accessories, ABS system,
wipers, dashboard cluster gauges and buzzers, air
horn and air dryer heater. Do not leave the key in this
position unless the engine is running.
NOTE
To prevent discharge of the batteries when the
engine in not running, some functions are
automatically switched off if the battery voltage
drops below 24.0 volts for more than 30 seconds.
A pictogram and a message will appear in the DID
while this protection mode is active. Set the
ignition key to the OFF position and then turn the
ignition key to the ON position to reactivate the
functions for a period of 30 seconds before they
switch off again. If a prolonged use of the functions
with the engine not running is necessary, connect
the battery to a charger.