Problem / Symptom Probable Causes Actions
Entrance door does not
open nor close using the
control buttons
Defroster fan not
functioning
Windshield wipers not
functioning in speed 1 or
intermittent
Module AE47 is not powered
or is faulty
1. Check the DIAGNOSTICS menu of Driver
Information Display (DID). Select VIEW
ACTIVE FAULTS and ELECTRICAL. The
message “No 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.
5. Use the air release valves near the entrance
door and in the front service compartment to
lock / unlock the door
Windshield wipers not
functioning in speed 1 or
intermittent
No power on R27 Check CB48 (VECF)
HVAC condenser fans
not functioning in speed 1
Circuit breaker CB7 tripped Check / reset circuit breaker CB7
HVAC condenser fans
not functioning in speed 2
Circuit breaker CB7 tripped Check / reset circuit breaker CB7
Check / replace fuse F135
Windshield washer not
functioning
Windshield upper section
de- icing system not
functioning
Module AE44 is not powered
or is faulty
1. Check the DIAGNOSTICS menu of Driver
Information Display (DID). Select VIEW
ACTIVE FAULTS and ELECTRICAL. The
message “No Response ModA44, 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 F44
4. Probe gray connector on module to see if it is
powered.
PA-1652 Operator's Manual H3-45 Coach
B-4 Multiplex Troubleshooting
To Next Page
Loading...
Need help?
General
