Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 597
FMI: 19
Description: Brake switch not detected on J1939
Troubleshooting:
The Brake Switch provides the Electronic Control Module (ECM) with the brake position.
Probable causes:
1) Body Control Module (BCM) Controller Area Network (CAN) message not being reported
2) Brake switch or circuit fault
3) See BCM for troubleshooting switch
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 609
FMI: 3
Description: DCU Switched voltage too HIGH
Troubleshooting:
The Doser Control Unit (DCU) controls the Downstream Injection (DSI) System during a
regeneration.
Probable causes:
1) Jump start using more than system voltage
2) Batteries wired incorrectly
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 609
FMI: 4
Description: DCU Switched voltage too LOW
Troubleshooting:
The Doser Control Unit (DCU) controls the Downstream Injection (DSI) System during a
regeneration.
Probable causes:
1) Low discharge batteries
2) Charging system failure
3) High resistance in DCU powering circuits
Make: International
Engine: MaxxForce DT (2010 & Newer)
PID: N/A
SPN: 609
FMI: 12
Description: DCU Internal chip Error
Troubleshooting:
The Doser Control Unit (DCU) controls the Downstream Injection (DSI) System during a
regeneration.
Probable causes:
1) Internal DCU fault, replace module