Clear the fault by isolating the vehicle power supply at batteries for at least 1 second and then reactivate the power supply to the vehicle, allowing time for GSP Lock to be achieved.
Check no engine lights on vehicle / speedometer work.
Check CAN line Voltages to MSB as per diagnostic guide.
Check DIP switch 3 set to ON as per diagnostic guide.
Check CAN Display connector not connected to screen harness. Refer to schematic; check that VEH CAN not ticked in screen setting menu.
For full list of diagnostic steps refer to MSARB Diagnostic Troubleshooting Guide – for Speed Signal.
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