SECTION 06: ELECTRICAL
32
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version) – Sec 06 revised June 2017
Problem/symptom
Probable causes
Actions
Windshield washer not
functioning
Windshield upper section
de-icing system not
functioning
Defroster fan is
functioning but no heat or
cooling available in the
driver area.
Module a46 is not powered
or is faulty
1. Check the
diagnostics
menu of
driver information display (DID).
Select
fault diagnostics
and
electrical system
. The message “no
response moda46, 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 cb1
3. Check / replace fuse f12 or f13
4. Probe gray connector on module to
see if it is powered.
Low beam headlights and
front flasher on left side
not functioning
Electric horn not
functioning
Module a45 is not powered
or is faulty
1. Check the
diagnostics
menu of
driver information display (DID).
Select
fault diagnostics
and
electrical system
. The message “no
response moda45, 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 cb2
3. Check / replace fuse f33 and f34
4. Check / replace relay r19
5. Probe gray connector on module to
see if it is powered.
Low beam headlights and
flasher on right side not
functioning
Module a48 is not powered
or is faulty
1. Check the
diagnostics
menu of
driver information display (DID).
Select
fault diagnostics
and
electrical system
. The message “no
response moda48, 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 cb2
3. Check / replace fuse f33 and f34
4. Check / replace relay r19
5. Probe gray connector on module to
see if it is powered.
