215922
436
Revision A
Fault
Codes
Telltale
Short
Description
Full
Fault
Description
Recommended
Fix/Check
Message
SA
SPN
FMI
178
521250
2
Electrical
Sys
te
m
Tail
Lights,
Cab
Fwd
BK4
Relay
Coil
short
ed
or
failed
relay
driver
Replace
relay
178
521250
3
Electrical
Sys
te
m
Tail
Lights,
Cab
Fwd
BK4
Relay
Normally
Open
contact
is
open
Replace
relay
178
521250
4
Electrical
Sys
te
m
Tail
Lights,
Cab
Fwd
BK4
Relay
Normally
Closed
contact
is
open
Replace
relay
178
521250
5
Electrical
Sys
te
m
Tail
Lights,
Cab
Fwd
BK4
Relay
coil
is
not
receiving
power
Contact
Dealer
178
521250
6
Electrical
Sys
te
m
Tail
Lights,
Cab
Fwd
BK4
Relay
Normally
open
contact
is
short
ed
Replace
relay
178
521250
7
Electrical
Sys
te
m
Tail
Lights,
Cab
Fwd
BK4
Relay
Normally
closed
contact
is
short
ed
Replace
relay
178
521266
1
Electrical
Sys
te
m
SPARE
BK11
Relay
coil
open
or
not
present
Check
chassis
module
for
missing
relay
.
Replace
relay
.
178
521266
2
Electrical
Sys
te
m
SPARE
BK11
Relay
Coil
short
ed
or
failed
relay
driver
Replace
relay
178
521266
3
Electrical
Sys
te
m
SPARE
BK11
Relay
Normally
Open
contact
is
open
Replace
relay
178
521266
4
Electrical
Sys
te
m
SPARE
BK11
Relay
Normally
Closed
contact
is
open
Replace
relay
178
521266
5
Electrical
Sys
te
m
SPARE
BK11
Relay
coil
is
not
receiving
power
Contact
Dealer
178
521266
6
Electrical
Sys
te
m
SPARE
BK11
Relay
Normally
open
contact
is
short
ed
Replace
relay
178
521266
7
Electrical
Sys
te
m
SPARE
BK11
Relay
Normally
closed
contact
is
short
ed
Replace
relay
178
521274
1
Electrical
Sys
te
m
Wiper
washer
BK12
Relay
coil
open
or
not
present
Check
chassis
module
for
missing
relay
.
Replace
relay
.
178
521274
2
Electrical
Sys
te
m
Wiper
washer
BK12
Relay
Coil
short
ed
or
failed
relay
driver
Replace
relay
178
521274
3
Electrical
Sys
te
m
Wiper
washer
BK12
Relay
Normally
Open
contact
is
open
Replace
relay
178
521274
4
Electrical
Sys
te
m
Wiper
washer
BK12
Relay
Normally
Closed
contact
is
open
Replace
relay