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

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

Component Identification:

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 with 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 light 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
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 via the vehicle dynamics CAN.

The functions resulting therefrom 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 and the relevant components are then actuated.

Actuation of components
Components are actuated with 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), on model 204.001, 002, 003, 006, 025, 044, 045, 047, 048, 049, 065, 092, 201, 202, 203, 225, 245, 247, 248, 249, 292 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
- Power supply of yaw rate sensor for lateral and longitudinal acceleration (B24/15)

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