CAN databus function - GF54.00-P-0005HA

MODEL 202.128 as of 1.4.96, 202.188 with ENGINE 605.960

MODEL 210.010 as of 1.6.96, 210.210 /610 with ENGINE 605.912

MODEL 210.020 as of 1.6.96 with ENGINE 606.912 with CODE (491) U.S. version

MODELS 210.025/225 with ENGINE 606.962

MODEL 140.135 with ENGINE 606.961

MODEL 202.121 as of 1.8.96, 202.182 with ENGINE 604.910

MODELS 202.122/180 with ENGINE 604.915

MODEL 210.004 as of 1.6.96 with ENGINE 604.912

MODEL 210.003 with ENGINE 604.917

MODELS 210.015/215 with ENGINE 605.962

Models 202, 210 up to 02/97; model 140

Fig 1: Identifying CAN Databus Function - Models 202, 210 Up To 02/97; Model 140

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Models 202, 210 as of 03/97

Fig 2: Identifying CAN Databus Function - Models 202, 210 As Of 03/97

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

Data transfer between individual control modules
Readying sensor signals for several systems
Reducing the number of electric cables
Improving electromagnetic compatibility

Structure

The CAN databus consists of a specially twisted two-core cable which is responsible for digital data transfer. The users (control modules) are connected to these cables. The bus termination (120 ohm resistor), which is connected between the cables, is also positioned at the last control module in each case. Measuring the resistance (ignition switched off!) between the two cables would result in a reading of 60 ohm - twice 120 ohm in parallel.

Operation

The data are transmitted digitally over the CAN databus at various intervals. The individual data blocks are defined in a protocol and it is specified which data are received or transmitted by a control module. Each connected control module is able to transmit or receive data.

The total of the data blocks, the short pause between two transmission intervals and further properties of the CAN databus, are constantly checked. Any faults detected are stored.

IFI control module, location/task/function		GF07.12-P-3102HA
DFI control module, location/task/function		GF07.13-P-3102HA
ETC control module, location/task	Transmission 722.6	GF27.19-P-4012G
Electronic ignition switch control module Location/Function/Design/function		GF80.57-P-4102A
AAC [KLA] pushbutton control module function	Model 210	GF83.40-P-2000A
	MODEL 202 up to 31.8.95	GF83.40-P-2000B
	MODEL 202 as of 1.9.95	GF83.40-P-2000E
	MODEL 140 as of 1.9.95	GF83.40-P-0999S
Location / task / design / function of ASR V control module		GF42.40-P-4500A
ETS control module position / task / design / function		GF42.35-P-4500A
ESP control module, location / task / design / function		GF42.45-P-4500B