Mid 128, Pid 110; Coolant Temperature - Volvo TAD650VE Workshop Manual

Diagnostic Trouble Codes
66

MID 128, PID 110

Coolant temperature

MID 128: Engine control unit
FMI 0:
FMI 4:
FMI 5:
FMI
0
4, 5
Fault indication
DCU:
CIU:
Flash code
Electrical fault: 3.3
Value fault:
Symptom
FMI 0:
FMI 4, 5: Engine is difficult to start
Group 30: Electrical system
The sensor value is valid but above
the normal working range.
The voltage is less than the normal
value or is short circuited to lower volt-
age.
The current is less than the normal val-
ue or is open circuited.
Fault code explanation
Coolant temperature too high
Faulty sensor / Faulty sensor circuit
Engine warning in DCU display
Flash code
6.1
Engine is derated if engine protection
parameter is activated