PREVOST H3-45 VIP Owner's Manual page 237

Problem / Symptom
Defroster fan is
functioning but no heat or
cooling available in the
driver area.
Low beam headlamps and
front flasher on left side
not functioning
Electric horn not
functioning
Low beam headlamps and
flasher on right side not
functioning
Probable Causes
Module AE47 is not powered
or is faulty
Module AE46 is not powered
or is faulty
Module AE48 is not powered
or is faulty
PA-1619 Owner's Manual H3-45 VIP
Multiplex Troubleshooting B-5
Actions
1. Check the DIAGNOSTICS menu of
Driver Information
Select VIEW ACTIVE FAULTS and
ELECTRICAL. The
Response ModA47, Active" indicates a
power problem on the module. (A DL0
(BBUS MUX) network problem would
show the same message but doesn't
produce these symptoms).
2. Check / reset circuit breaker CB1
3. Check / replace fuse F45
4. Probe gray connector on module to see
if it is powered.
1. Check the DIAGNOSTICS menu of
Driver Information
Select VIEW ACTIVE FAULTS and
ELECTRICAL. The
Response ModA46, Active" indicates a
power problem on the module. (A DL0
(BBUS MUX) network problem would
show the same message but doesn't
produce these symptoms).
2. Check / reset circuit breaker CB10
3. Check / replace fuse F19
4. Probe gray connector on module to see
if it is powered.
1. Check the DIAGNOSTICS menu of
Driver Information
Select VIEW ACTIVE FAULTS and
ELECTRICAL. The
Response ModA48, Active" indicates a
power problem on the module. (A DL0
(BBUS MUX) 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.
Display (DID).
message "No
Display (DID).
message "No
Display (DID).
message "No