PREVOST X3-45 VIP 2015, Owner'S Manual

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Appendix B – Troubleshooting Guide for Multiplex Vehicles 2
Problem/Symptom Probable Causes Actions
not functioning (interior
lighting, driver's area
lighting, wiper speed 2
and intermittent).
Marker lights and
clearance lights are
turned ON when setting
ignition to the ON position.
The CAN network is not
working. It could be caused
by a short on the network, an
open circuit, a problem with
the MCM or the MCM being
disconnected from the
network.
F1.
2. Operate in limp-home mode by
starting the vehicle from the engine
compartment (REAR START). All
functions essential to drive are
available.
No temperature control in
the cabin area.
Cabin temperature display
indicates two dashes "--"
Problem with the temperature
sensor located in the
evaporator compartment air
intake or the sensor wiring. Manually control the temperature by
playing with the cabin (passenger) set
point. Set above 22°C (72°F) to heat and
below 22° C (72°F) to cool.
Defroster fan not
functioning
Windshield wipers not
functioning in speed 1 or
intermittent Module A47 is not powered
or is faulty 1. Check the Diagnostics menu of Driver
Information Display (DID). Select Fault
Diagnostics and Electrical System.
The message “No Response ModA47,
Active” indicates a power problem on
the module. (A CAN network problem
would show the same message but
doesn't produce these symptoms).
2. Check / reset circuit breaker CB3.
3. Check / replace fuse F5 and F16.
4. Probe gray connector on module to
see if it is powered.
Windshield wipers not
functioning in speed 1 or
intermittent No power on R23 Check / replace fuse F82
HVAC condenser fans not
functioning in speed 1 Circuit breaker CB7 tripped
and not reset Check / reset circuit breaker CB8
HVAC condenser fans not
functioning in speed 2 Circuit breaker CB7 tripped
and not reset Check / reset circuit breaker CB5
Windshield washer not
functioning
Defroster fan is
functioning but no heat or
cooling available in the
driver area.
Module A46 is not powered
or is faulty 1. Check the Diagnostics menu of Driver
Information Display (DID). Select Fault
Diagnostics and Electrical System.
The message “No Response ModA46,
Active” indicates a power problem on
the module. (A CAN network problem
would show the same message but
doesn't produce these symptoms).
2. Check / reset circuit breaker CB3.
3. Check / replace fuse F12 or F13.
4. Probe gray connector on module to
see if it is powered.