Digital data bus (D2B), diagnosis, troubleshooting - AD82.00-P-5000A

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

	Optical fiber, location	Model 129	GF82.00-P-4000-01D
		Model 168	GF82.00-P-4000-01E
		Model 170	GF82.00-P-4000-01C
		Models 202, 208.3	GF82.00-P-4000-01B
		Model 210	GF82.00-P-4000-01A
		Model 215, 220	GF82.00-P-4000-01F
	Digital data bus (D2B), diagnosis, previous knowledge		AD82.00-P-2000A
	Interrogate the actual configuration of control modules in the vehicle using Hand-Held Tester (HHT)
	Connect Hand-Held Tester (HHT), read out fault memory	Except model 215, 220	AD00.00-P-2000-03A
	Troubleshooting
Complaint	Cause	Notes	Remedy
D2B ring does not run up	Voltage supply of a D2B component is not ensured	Serves to check the voltage supply of the ring components Wake-up diagnosis can only be carried out when the D2B ring is interrupted	Carry wake-up diagnosis
D2B ring does not run up	D2B connectors are not plugged in correctly or are dirty		Clean connectors and lock in position
D2B ring does not run up and no concrete additional data on the position of the fault is stored in the D2B ring	Optical fiber defective		Check the optical fiber following the sequence of the flow of information, starting at the radio or COMAND AD82.00-P-2000-02A
D2B ring does not run up and no concrete additional data on the position of the fault is stored in the D2B ring	Transmitter unit at a control module defective Receiver unit at a control module defective		Check the optical fiber following the sequence of the flow of information, starting at the radio or COMAND AD82.00-P-2000-02A