PREVOST X3-45 VIP 2017 Owner's Manual page 194

Appendix B – Troubleshooting Guide for Multiplex Vehicles
4
Problem/Symptom
Low beam headlights and
flasher on right side not
functioning
Rear flashers not
functioning
Stoplights and center
stoplights not functioning
Engine is overheating and
radiator fans do
engage
Probable Causes
Module AE48 is not powered
or is faulty
Module AE51 is not powered
or is faulty
Module AE52 or AE49 is not
not powered or is faulty
Actions
1. Check the SYSTEM DIAGNOSTIC
menu of Driver Information Display
(DID). Select FAULT DIAGNOSTIC
and ELECTRICAL
message "No Response
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 CB10
3. Check / replace fuse F21
4. Probe gray connector on module to
see if it is powered.
1. Check the SYSTEM DIAGNOSTIC
menu of Driver Information Display
(DID). Select FAULT DIAGNOSTIC
and ELECTRICAL
message "No Response
Active" indicates a power problem on
the module. (A CAN network problem
would show the same message but
doesn't produce this symptom).
2. Check / reset circuit breaker CB8
3. Check / replace fuse F107
4. Probe gray connector on module to
see if it is powered.
1. Check the SYSTEM DIAGNOSTIC
menu of Driver Information Display
(DID). Select FAULT DIAGNOSTIC
and ELECTRICAL
message "No Response
ModA49, Active" indicates a power
problem on the module. (A CAN
network problem would show the
same message but doesn't produce
this symptom).
2. Check circuit breaker CB5
3. Check / replace fuse F133, F134
4. CB201-CB208
SYSTEM. The
ModA48,
SYSTEM. The
ModA51,
SYSTEM. The
ModA52/