Scania fault code 31
Code 31 is used by 4 different Scania systems. Choose the control unit shown in your diagnostic tool:
COO Coordinator
Communication with the GMS control unit
The communication between the coordinator and the GMS control unit has been interrupted.
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CUV Visibility system
Control unit
Internal fault in the control unit.
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ACS Articulation Control System
Left proportional valve, ACS, short circuit
Too high a signal in the circuit for the left proportional valve.
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AUS Audio System
GPS antenna, short circuit
Short circuit to ground.
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