MID 128 / 144, SID 254 Controller 1
FMI 3 – Voltage above normal or shorted high
FMI 8 – Abnormal frequency, pulse width or period
FMI 12 – Faulty device or component
Fault code explanation: Communication fault.
Fault indication: CIU: Flash code
Flash code
Electrical fault: 9.9 (EMS)
Value fault: None (EMS)
Electrical fault: 9.8 (CIU)
Value fault: None (CIU)
Possible reason: If
faultcode MID 144, SID 254, FMI 11 appears the CIU throttle positive
and negative supply wire could be short circuited to eachother.
Faulty flash memory, CIU.
Fault in control unit, CIU.
Suitable action: 1 Check for short circuit in the supply cables to the CIU throttle potenti-
2 Reprogram the unit which set the faultcode.
30-2 Fault Tracing
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