Digital data bus (D2B), diagnosis, function check - AD82.00-P-3000A

MODEL 129 as of 1.6.98, 168 as of 1.9.98, 170, 202, 208, 210 as of 1.6.98, 215, 220 

	Digital data bus (D2B), diagnosis, previous knowledge		AD82.60-P-2000A
	Battery voltage 11-14 V Fuses in order
	Determine the D2B ring participants (Tele Aid, cellular telephone, CD player, sound amplifier (model 215, 220 only), voice control system) in the vehicle and activate one of the participants	Observe vehicle data card. The ring participants differ depending on the series and special equipment.
	Function check
Scope of test	Operation/requirement	Specified value	Possible cause/Remedy
Activate D2B ring (CD changer, code 819)	Radio/COMAND: ON	Digital data bus is activated	AD82.60-P-4000A
	Play CD	The volume, sound and displays must be faultless
or
Activate D2B ring (voice control system, code 813b)	Radio/COMAND: ON	Digital data bus is activated
	Operate voice control system button/switch	Beeper sounds
or
activate D2B ring (cellular telephone, codes 316, 317)	Cellular telephone: ON	Digital data bus is activated
or
model 215, 220 only, activate D2B ring (sound amplifier, code 810)	Radio/COMAND: ON	Digital data bus is activated The volume, sound and displays must be faultless