Scania fault code 578
Code 578 is used by 8 different Scania systems. Choose the control unit shown in your diagnostic tool:
VDT
Internal fault
Short circuit to ground.
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MBS
Furthest forward roof hatch control unit, fault in CAN communication
There is no CAN communication with the roof hatch control unit at the front or it has been interrupted.
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BCI
Configuration fault, Expansion unit E
Communication with expansion unit is missing or has been disconnected.
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ALM
Bodybuilder connection indicator for activated alarm, short circuit
The bodybuilder connection indicator for activated alarm is short-circuited to voltage supply.
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ACS Articulation Control System
ACS control unit, misidentification
The connection to the ID pins is faulty.
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EST
Solenoid valve for mechanical unlocking of the degradation valve
Overload on the output to the solenoid valve for mechanical unlocking of the degradation valve
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ESTA
Solenoid valve for mechanical unlocking of the degradation valve
Overload on the output to the solenoid valve for mechanical unlocking of the degradation valve
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ACSX
ACSX control unit, misidentification
The connection to the ID pins is faulty.
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