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April 2019
– Issue 4
Page
39
of
48
7A.1 – Engine / transmission (continued)
Fault
Possible causes
Trouble shooting
Orange dash light
‘on’ and buzzer
sounding
Orange engine light ‘on’ – Attention is required –
Possibly low coolant in the header tank. Check all
engine fluid levels. Contact your BCI Dealer for
guidance should you require assistance.
Check coolant level in header tank, if it is full and
all other engine fluid levels are ok and you want
the buzzer to stop sounding – locate the sender
unit wires from the sender at the bottom of the
header tank and disconnect them at the plug.
Note:
Be sure to have the sender unit replaced
as soon as you complete the trip.
Red engine dash
light ‘on’
Urgent attention required
Stop the bus urgently, as soon as it is safe to do
so and turn off the engine.
Call a BCI or Cummins Dealer for assistance
Engine loss of
power
Possible binding of brakes
Stop driving and position the vehicle on a slope
and release the foot brake to see if the bus rolls
freely and brakes are not dragging. If brakes are
dragging, stop and call a BCI Dealer for guidance
on how to proceed.
Engine lamp illuminated
Engine has possibly de-rated as a self -
protection measure – Call a BCI or Cummins
Dealer for assistance
Bus will not
accelerate
Entry door not properly closed
Ensure the entry door is fully closed
Bus not building up
air pressure
Delivery pipe from air compressor to air tank has
failed
Replace delivery pipe
Major air leak
Check for major air leaks and rectify
Engine not using
adblue
Adblue injector blocked
Remove adblue injector and remove clean
crystalized adblue blockage with warm water
Owner’s Manual