Diagnostic Trouble Codes - CDU - Cornerpost Display Unit

Control Unit	SPN	FMI	Priority	Description
CDU	629	12	Service Alert	Control unit CDU has reset itself due to watchdog timer.
CDU	639	12	Service Alert	CAN Bus 1 message is not arriving on time or missing.
CDU	639	14	Service Alert	No CAN Bus messages are arriving.
CDU	200722	03	Service Alert	Cornerpost switch matrix shorted high.