PREVOST X3-45 Multiplex, Руководство по обслуживанию

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Section 06: ELECTRICAL
PA1562
23
4.3.2 Spare Can
A spare CAN network is installed between the
front and the rear of the vehicle. It has
connectors installed at each end to facilitate
swapping from the regular CAN network to the
spare CAN network. Refer to the vehicle wiring
diagram and the section 4.6 for more
information.
4.4 TEST MODE FOR SWITCHES AND
SENSORS
The switch/sensor test mode provides useful
information to diagnose problems
complimentary to the electrical system
diagnosis.
To enter this mode, activate the dashboard
"Telltale Light Test" switch 3 times within 4
seconds. To exit the switch/sensor test mode,
reactivate the test switch 1 time or turn OFF the
ignition.
4.4.1 Information Available And Impact On
The Functions In Switch/Sensor Test Mode
Telltale panel audible alarm emits a beep each
time an OFF/ON transition is detected on a
multiplex input. This allows quick verifying if the
switches and sensors are detected or seen by
the multiplex modules. When the vehicle is
parked, the back-up alarm also emits a sound
that allows verification of the sensors at the rear
of the vehicle.
Certain inputs are doubled (ex. turn signal
switch on multi-function lever, door operating
buttons) and also other inputs activate at the
same time (ex. kneeling switch and Kneeling
proximity sensor switch). For these inputs, 2
beeps are emitted. If only one beep is heard,
one of the inputs is defective.
SWITCHES AND SENSORS SUPPORTED
BY THE SWITCH/SENSOR TEST MODE
HVAC control unit driver’s section ON/OFF
A/C door ajar open sensor
HVAC control unit driver recirculate switch
HVAC overhead compartment fan switch
HVAC control unit passenger’s section
ON/OFF
Engine ether start switch
Radiator fan clutch switch
Engine front start enable switch
Engine rear start enable switch
Engine ignition front switch
Engine ignition rear switch
Entrance door inside closing switch
Entrance door outside opening /closing switch
Entrance door electric window down switch
Entrance door electric window up switch
Electric horn button
Kneeling down switch
Kneeling up switch
Lavatory emergency switch
Interior lighting switch, 2 positions
Driver’s area lighting switch
Reading lights switch
Multi-function lever LH turn signal
Multi-function lever RH turn signal
Fog lights switch
Hazard warning flashers switch
Multi-function lever courtesy blinkers switch
Headlights switch, 2 positions
Multi-function lever headlights beam toggle
switch
Baggage compartment door lock/unlock switch
Tag axle signal
Wheelchair lift activation switch
Windshield lower wiper
Multi-function lever windshield wipers intermit.
Multi-function lever windshield wipers speed
1,2
Windshield wipers backup switch
Windshield washer switch
The following inputs, either certain options or
sensors which are difficult to activate, are not
supported by the switch/sensor test:
o
Low-Buoy switch,
o
Starter Sensor,
o
ABS Warning input,
o
WCL switch,
o
Driver's Power Window Switch (up & down),
o
Fog Lights Switch,
o
Alternator Sensors 1 & 2,
o
Retarder Active Signal,
o
Radiator fan speed 1 & 2 signals.
When in switch/sensor test mode, the A/C
compressor HI and LO pressure values are
displayed one after the other instead of the
outside temperature in the telltale panel LCD
display. This feature can be used when the
vehicle is traveling to check the A/C compressor
pressure values, but no
beep can be heard.