MID 128, PPID 98 Engine sync
acknowledge
FMI 9 – Abnormal update rate
Fault code explanation: Communication fault.
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: None.
Value fault: None.
Preconditions: NOTICE! If the control panel ONLY communicates on the J1939 communi-
cation
and
NOT the redundancy of J1587 for start, stop and throttle this fault
code is active in the VODIA and that is normal.
Conditions for fault code: “Time-out” on the J1587 bus.
Possible reason: • Fault in the communication with the DCU/CIU.
• No DCU/CIU found.
• Open circuit in the power supply cable between the engine control unit
and the DCU/CIU.
• Faulty DCU/CIU.
Suitable action: 1 Check the communication cables to the DCU/CIU.
2 Check the power supply cable between the engine control unit and the
DCU/CIU.
3 Check that the DCU/CIU is programmed for the correct engine type.
30-2 Fault Tracing
112 47701632 10-2013 © AB VOLVO PENTA