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

WARNING: This page is about a different car, the 2011 Mercedes-Benz C300, 2010 Mercedes-Benz C300, 2009 Mercedes-Benz C300, and 2008 Mercedes-Benz C300. However, it is still accessible from the selected car via links, so may be relevant.

MODEL 204.0/2 as of model year 2009/YoM 08

MODEL 204.0/2 as of model year 2012/YoM 11 model refinement package

MODEL 204.3

MODEL 204.9

Implementation dates and validities for Electronic Stability Program control unit (N30/4) (ESP) (Basis variant, without code (233) DISTRONIC PLUS) or Electronic Stability Program control unit (Premium variant, with code (233) DISTRONIC PLUS)

Model 204.0/2 as of 1.3.2011

Model 204.3 as of 1.6.2011

Up to 28.2.2011 only the Basis variant ESP control unit will be installed.

Fig 1: Locating Electronic Stability Program Control Unit

Courtesy of MERCEDES-BENZ USA

Location

The Electronic Stability Program control unit is in the front left of the engine compartment.

Task

The Electronic Stability Program control unit has the following tasks:

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

Control of systems

The Electronic Stability Program control unit controls the following systems:

Adaptive Brake (ABR)
Limiter, except code (494) USA version or except code (460) Canada version
Speed-sensitive power steering (SPS), with code (213) Speed-sensitive power steering
Tire pressure loss warning, except code (470) Tire pressure monitor (basis) or except code (475) Tire pressure monitor (Premium)
PRE-SAFE(r), with code (299) PRE-SAFE
Cruise control, with code (440) Cruise control

Reading in of sensors and signals

The input factors are read in via the following connections:

Direct line
Chassis CAN (CAN E)
Vehicle dynamics CAN (CAN H)

Direct line

The signals from the following components are read via a direct line:

Brake lights switch (S9/1)
Brake vacuum sensor (B64/1) (with code (B03) ECO start/stop function)
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

The signals are read in by the Electronic Stability Program control unit via the chassis CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Vehicle dynamics CAN

The signals are read in by the Electronic Stability Program control unit over the vehicle dynamics CAN.

The resulting functions are described in the corresponding function descriptions (see block diagram or function schematic).

Evaluation of input factors

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

Actuation of components

Components are actuated via the following lines:

Direct line
Chassis CAN
Vehicle dynamics CAN

Direct line

The following components are actuated via a direct line:

Brake light actuation via rear SAM control unit with fuse and relay module (N10/2)
Speed-sensitive power steering solenoid valve (Y10), with code (213) Speed-sensitive power steering
Power steering pump quantity control valve (Y10/1), for model 204.001/002/003/006/025/044/045/047/048/049/065/092/201/202/203/225/245/247/248/249/292/302/303/347/349/3 57 with code (213) Speed-sensitive power steering
Power steering pump quantity control valve, as of 1.9.08 on model 204.041/046/052/054/056/241/246/252/254/256/with code (213) Speed-sensitive power steering
Voltage supply of yaw rate sensor for lateral and longitudinal acceleration (B24/15) (model 204.0/2 up to 28.2.2011, model 204.9, model 204.0/2 as of 1.3.2011 (with code (233) DISTRONIC PLUS), model 204.3 (with code (233) DISTRONIC PLUS))

Chassis CAN

The components are actuated by the Electronic Stability Program control unit via the chassis CAN.

The functions resulting therefrom are described in the corresponding function descriptions (see block diagram or function schematic).

Vehicle dynamics CAN

The components are actuated by the Electronic Stability Program control unit via the vehicle dynamics CAN.

The resulting functions are described in the corresponding function descriptions (see block diagram or function schematic).

	Wiring diagram for Adaptive Brake (ABR)	Basis variant	PE42.47-P-2000-97FAA
	Wiring diagram for Adaptive Brake (ABR)	Premium variant	PE42.47-P-2000-97FAB