Component description for Electronic Stability Program control unit - GF42.45-P-5119CAM

MODEL 207.3/4 as of model year 2014

Shown on model 207.3 without CODE 233 (DISTRONIC PLUS)

Fig 1: Identifying Electronic Stability Program Control Unit Components - Shown On Model 207.3

Courtesy of MERCEDES-BENZ USA

Location

The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or Premium Electronic Stability Program control unit (N30/7) with CODE 233 (DISTRONIC PLUS) is located in the left front of the engine compartment on the traction system hydraulic unit.

Task

The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit with CODE 233 (DISTRONIC PLUS) includes the controls for the following systems:

Adaptive Brake (ABR)
Electronic brake force distribution (EBD [EBV])
Emission test, roller dynamometer mode
Anti-lock braking system (ABS)
Acceleration skid control (ASR), electronic traction system (ETS)
Brake Assist (BAS)
BAS PLUS with CODE 233 (DISTRONIC PLUS)
ESP® trailer stabilization with CODE 550 (Trailer hitch)
Hill-Start Assist
Dry braking
Precharging, depending on accelerator pedal actuation
Precharging, depending on lateral acceleration
HOLD function
PRE-SAFE® system
Standstill coordinator (SSK)
Steer Assist
Tire pressure loss warning (RDW) except CODE 475 (Tire pressure monitor (premium))
Variable speed limiter except CODE 233 (DISTRONIC PLUS), except CODE 494 (USA version) and except CODE 460 (Canada version)
CRUISE CONTROL except CODE 233 (DISTRONIC PLUS)

On vehicles with CODE 23P (Driving assistance package Plus), the variable speed limiter and the CC are integrated in the radar sensors control unit (N62/1).

The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit with CODE 233 (DISTRONIC PLUS) has the following tasks:

Reading in of sensors and signals
Evaluation of input factors
Actuation of components

Reading in of sensors and signals

The input factors are read in via the following connections:

Direct line
Chassis CAN 1 (CAN E1)
Vehicle dynamics CAN (CAN H)

Direct line

The following signals are read in via direct lines:

circuit 30
Circuit 31
Brake vacuum sensor (B64/1) with CODE B03 (ECO start/stop function)
Brake lights switch (S9/1)
Left front axle rpm sensor (L6/1)
Right front axle rpm sensor (L6/2)
Left rear axle rpm sensor (L6/3)
Right rear axle rpm sensor (L6/4)

Chassis CAN 1

The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit with CODE 233 (DISTRONIC PLUS) is a subscriber to the chassis CAN 1. It communicates with the following control unit:

Instrument cluster (A1) via chassis CAN 1 and interior CAN (CAN B) with front SAM control unit with fuse and relay module interface (N10/1)
Steering column tube module control unit (N80)
CDI control unit (N3/9) (with diesel engine) or ME-SFI [ME] control unit (N3/10) (with gasoline engine)
Supplemental restraint system control unit (N2/10)
Radar sensors control unit via chassis CAN 1 and chassis FlexRay (Flex E) with the chassis gateway control unit interface (N93/7)
Left front door control unit (N69/1) via chassis CAN 1 and interior CAN with the front SAM control unit with fuse and relay module interface
Right front door control unit (N69/2) via chassis CAN 1 and interior CAN with the front SAM control unit with fuse and relay module interface
Trailer recognition control unit (N28/1) via chassis CAN 1 and interior CAN with the front SAM control unit with fuse and relay module interface
Rear SAM control unit with fuse and relay module (N10/2) via chassis CAN 1 and interior CAN with the front SAM control unit with fuse and relay module interface
Parking system control unit (N62) via chassis CAN 1 and chassis CAN 2 (CAN E2) with the chassis gateway control unit interface
Electrical power steering control unit (N68) via chassis CAN 1 and chassis CAN 2 with the chassis gateway control unit interface

Vehicle dynamics CAN

Signals are read in via the vehicle dynamics CAN from the following components:

Yaw rate sensor for lateral and longitudinal acceleration (B24/15)

Evaluation of input factors

The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.

Actuation of components

Components are actuated with the following line:

Direct line

Direct line

The following components are actuated via direct lines:

Rear SAM control unit with fuse and relay module (brake light actuation)
Yaw rate sensor for lateral and longitudinal acceleration (power supply)

Wiring diagram for Adaptive Brake (ABR)

N30/4, N30/7

PE42.47-P-2000-97EAC