214733 458 Revision A
Fault Codes
Telltale
Short
Description
Full Fault
Description
Recommended
Fix/Check Message
SA SPN
FMI
178 521250
5
Electrical
System
Tail Lights, Cab Fwd
BK4 Relay coil is not
receiving power
Contact Dealer.
178 521250 6
Electrical
System
Tail Lights, Cab Fwd
BK4 Relay Normally open
contact is shorted
Replace relay.
178 521250
7
Electrical
System
Tail Lights, Cab Fwd
BK4 Relay Normally closed
contact is shorted
Replace relay.
178 521266
1
Electrical
System
Header swath lights
BK11 Relay coil open or not
present
Check chassis module for missing replay. Replace
relay.
178 521266 2
Electrical
System
Header swath lights
BK11 Relay Coil shorted or
failed relay driver
Replace relay.
178 521266 3
Electrical
System
Header swath lights
BK11 Relay Normally Open
contact is open
Replace relay.
178 521266
4
Electrical
System
Header swath lights
BK11 Relay Normally Closed
contact is open
Replace relay.
178 521266 5
Electrical
System
Header swath lights
BK11 Relay coil is not
receiving power
Contact Dealer.
178 521266 6
Electrical
System
Header swath lights
BK11 Relay Normally open
contact is shorted
Replace relay.
178 521266
7
Electrical
System
Header swath lights
BK11 Relay Normally closed
contact is shorted
Replace relay.
178 521274
1
Electrical
System
Windshield washer
BK12 Relay coil open or not
present
Check chassis module for missing replay. Replace
relay.
178 521274 2
Electrical
System
Windshield washer
BK12 Relay Coil shorted or
failed relay driver
Replace relay.
178 521274 3
Electrical
System
Windshield washer
BK12 Relay Normally Open
contact is open
Replace relay.
178 521274
4
Electrical
System
Windshield washer
BK12 Relay Normally Closed
contact is open
Replace relay.
178 521274
5
Electrical
System
Windshield washer
BK12 Relay coil is not
receiving power
Contact Dealer.
178 521274 6
Electrical
System
Windshield washer
BK12 Relay Normally open
contact is shorted
Replace relay.
REFERENCE