(Component Description For Electronic Stability Program Control Unit - GF42.45-P-5119LFH)
Model 222.004/057/104/157/163
up to model year 2018
Shown on model 222.0
Location
The Electronic Stability Program control unit is located in the engine compartment, at the left next to the BAS brake booster (A7/7) at the traction system hydraulic unit.
Tasks
The Electronic Stability Program control unit contains the control for the following systems:
- Regenerative braking system
- Radar-based regenerative braking system
- Electronic Stability Program (ESP®)
- Electronic brake force distribution (EBD)
- Anti-lock braking system (ABS)
- Acceleration skid control (ASR), electronic traction system (ETS)
- Brake Assist (BAS)
- BAS PLUS (with code P20 (Driving assistance package Plus))
- Hill Start Assist
- Adaptive brake lights, flashing (except with CODE 494 (USA version))
- Dry braking
- Precharging, depending on accelerator pedal actuation
- Precharging, depending on lateral acceleration
- HOLD function
- ESP® trailer stabilization (with CODE 550 (Trailer hitch))
- PRE-SAFE® system
- Standstill control (SSC)
- Steer Assist
- Crosswind Assist
- Tire pressure loss warning (RDW) Tire pressure monitor (with CODE 477 (Tire pressure loss warning))
- Variable speed limiter (except code P20 (Driving Assistance package Plus))
- Cruise control (except CODE P20 (Driving Assistance package Plus))
The variable speed limiter and cruise control are integrated into the radar sensors control unit (N62/1).
The Electronic Stability Program control unit has the following tasks:
- Reading in of signals
- Evaluation of input factors
- Actuation of components Reading in of signals
The input factors are read in via the following connections:
- Direct line
- Suspension FlexRay (Flex E)
Direct line
The following signals are read in via direct lines:
- Circuit 30
- Circuit 31
- Traction system hydraulic unit
- Pedal angle sensor (B37/1)
- Brake vacuum sensor (B64/1)
- 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)
- Brake vacuum pump relay (K40/8kI)
Chassis FlexRay
The Electronic Stability Program control unit is a subscriber to suspension FlexRay. It communicates with the following control units:
- Instrument cluster (A1)
- Supplemental Restraint System control unit (N2/10)
- CDI control unit (N3/9) (with diesel engines)
- ME-SFI control unit (N3/10) (with gasoline engines)
- Front SAM control unit (N10/6)
- Rear SAM control unit (N10/8)
- Electrical power steering control unit (N68)
- Left front door control unit (N69/1)
- Right front door control unit (N69/2)
- Electronic ignition lock control unit (N73)
- Steering column tube module control unit (N80)
- Powertrain control unit (N127)
- Electric parking brake control unit (N128)
- Radar sensors control unit (N62/1) (with CODE P20 (Driving assistance package Plus))
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:
- Traction system hydraulic unit
- Brake vacuum pump relay
- Vacuum pump relay (K40/8kQ)
| Wiring diagram for Adaptive Brake (ABR) | PE42.47-P-2000-97SEA |