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215922
433
Revision A
Fault
Codes
Telltale
Short
Description
Full
Fault
Description
Recommended
Fix/Check
Message
SA
SPN
FMI
178
521186
7
Electrical
Sys
te
m
Brake
Lights,
Cab
Fwd
BK1
Relay
Normally
closed
contact
is
short
ed
Replace
relay
178
521194
1
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
coil
open
or
not
present
Check
chassis
module
for
missing
relay
.
Replace
relay
.
178
521194
2
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
Coil
short
ed
or
failed
relay
driver
Replace
relay
178
521194
3
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
Normally
Open
contact
is
open
Replace
relay
178
521194
4
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
Normally
Closed
contact
is
open
Replace
relay
178
521194
5
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
coil
is
not
receiving
power
Contact
Dealer
178
521194
6
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
Normally
open
contact
is
short
ed
Replace
relay
178
521194
7
Electrical
Sys
te
m
High
Beam,
Engine
Fwd
BK2
Relay
Normally
closed
contact
is
short
ed
Replace
relay
178
521202
1
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
coil
open
or
not
present
Check
chassis
module
for
missing
relay
.
Replace
relay
.
178
521202
2
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
Coil
short
ed
or
failed
relay
driver
Replace
relay
178
521202
3
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
Normally
Open
contact
is
open
Replace
relay
178
521202
4
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
Normally
Closed
contact
is
open
Replace
relay
178
521202
5
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
coil
is
not
receiving
power
Contact
Dealer
178
521202
6
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
Normally
open
contact
is
short
ed
Replace
relay
178
521202
7
Electrical
Sys
te
m
Wiper
,
Cab
Fwd
BK7
Relay
Normally
closed
contact
is
short
ed
Replace
relay
178
521210
1
Electrical
Sys
te
m
Low
Beam
Lights,
EF
BK5
Relay
coil
open
or
not
present
Check
chassis
module
for
missing
relay
.
Replace
relay
.
178
521210
2
Electrical
Sys
te
m
Low
Beam
Lights,
EF
BK5
Relay
Coil
short
ed
or
failed
relay
driver
Replace
relay