Scania fault code 679
Code 679 is used by 5 different Scania systems. Choose the control unit shown in your diagnostic tool:
TMS Transmission Management System
Wheel speed sensor for the front axle's left-hand or right-hand wheels, fault indication
The electronic control unit indicates a fault in the wheel speed sensor for left-hand or right-hand front wheels.
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CUV Visibility system
Acoustic vehicle alert, internal fault
Sound from acoustic vehicle alert does not follow the vehicle speed or is degraded.
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BCI
Short circuit, analogue input signal, expansion unit I (pin B8)
Short circuit to earth.
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CMS
Information fault, charging or engine start
Incorrect information relating to charging or engine start.
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APS Air Processing System
Pressure control
The air pressure increases when the control unit has switched off the compressor.
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