Component Description For Electronic Stability Program Control Unit - GF42.45-P-5119GW

Model 463 (except 463.342) as of model year 2013 up to model year 2019

Model 463.342

Illustration shows engine 157

Courtesy of MERCEDES-BENZ USA

Location

The Electronic Stability Program control unit is located on the traction system hydraulic unit in the left of the engine compartment.

Tasks

The Electronic Stability Program control unit contains the control for the following systems:

Electronic Stability Program (ESP®)
Electronic brake force distribution (EBD)
Emission test, roller dynamometer mode
Anti-lock braking system (ABS)
Straight Line Control (as of 01.09.2015)
Acceleration skid control (ASR), electronic traction system
Brake Assist System (BAS)
Damper characteristics (with code A20 (Adjustable damping))
Hill Start Assist
Precharging, depending on accelerator pedal actuation
HOLD function
ESP® trailer stabilization (except model 463.242)
Flashing adaptive brake lights
Dry braking (as of 01.09.2015)
Failboost and overboost
Standstill control (SSC)
Limiter (except code EZ9 (DISTRONIC PLUS) and except code ZU8 (National version for USA))
CRUISE CONTROL (except code EZ9 (DISTRONIC PLUS))

The Electronic Stability Program control unit has the following tasks:

The input factors are read in via the following connections:

The signals from the following components are read via direct lines:

Front-axle brake pressure sensor (A7/3b1) (except code EZ9 (DISTRONIC PLUS))
Front pressure sensor (A7/3b7) (with code EZ9 (DISTRONIC PLUS))
Rear pressure sensor (A7/3b8) (with code EZ9 (DISTRONIC PLUS))
Brake vacuum sensor (B64/1)
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 also reads in the following signals over chassis CAN 1:

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Vehicle dynamics CAN

The Electronic Stability Program control unit also reads in the following signals over the vehicle dynamics CAN:

The functions that use these signals are described in the individual 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 and the relevant components are then actuated.

Actuation of components

The following components are actuated via direct lines:

High pressure/return flow pump (A7/3m1)
Left front pressure regulating valve, hold pressure (A7/3y6)
Left front pressure regulating valve, relieve pressure (A7/3y7)
Right front pressure regulating valve, hold pressure (A7/3y8)
Right front pressure regulating valve, relieve pressure (A7/3y9)
Left rear pressure regulating valve, hold pressure (A7/3y10)
Left rear pressure regulating valve, relieve pressure (A7/3y11)
Right rear pressure regulating valve, hold pressure (A7/3y12)
Right rear pressure regulating valve, relieve pressure (A7/3y13)
Front-axle switchover valve (A7/3y18)
Rear-axle switchover valve (A7/3y19)
Front-axle intake ball valve (A7/3y22)
Rear-axle intake ball valve (A7/3y23)
SAM control unit (N10) (Standstill control and brake light actuation)

Sending signals

The Electronic Stability Program control unit also sends the following signals over chassis CAN 1:

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

	Wiring diagram for ADAPTIVE BRAKE	Model 463 as of model year 2013 up to model year 2016	PE42.47-P-2000-97ZGA
		Model 463 as of model year 2016 up to model year 2019	PE42.47-P-2000-97ZGB