PREVOST X3-45 COACH 2018 Operator's Manual page 212

Appendix B – Troubleshooting Guide for Multiplex Vehicles
6
Problem/Symptom
No backlighting in the
instrument cluster
The radiator/CAC fans do
not function and the
engine is overheating
Probable Causes
"soft-fuse" is reset
Circuit breaker CB10
tripped or fuse F10/F29
blown
PA1627 X3-45 Operator's Manual
Actions
is Check circuit breaker CB2, CB10
Check / replace fuse F10, F29
Check / replace relay R22, R23
You can manually engage the
radiator/CAC fans half speed (50%) or full
speed (100%).
1. On the Driver Information Display,
select DIAGNOSTICS menu. Select
VEHICLE TESTS submenu and then
ACTIVATE RADIATOR FAN SPEED
50% or ACTIVATE RADIATOR FAN
SPEED 100%.
2. The DID status line will show TEST to
confirm the forced activation of the
radiator fans. To cancel, turn the
ignition switch to the OFF position or
press ESCAPE button, select STOP
TEST submenu and then press
ENTER button twice. TEST will
disappear from the DID status line.