Component description for Electronic Stability Program control unit - GF42.45-P-5119FQ
MODEL 218 up to model year 2014
Illustrated on model 218.3
Location
The Electronic Stability Program control unit or the Premium Electronic Stability Program control unit is located at the left front in the engine compartment on the traction system hydraulic unit.
Task
The Electronic Stability Program control unit (except code (233) DISTRONIC PLUS, except code (990) AMG vehicles) or the Premium Electronic Stability Program control unit (with code (233) DISTRONIC PLUS or with code (990) AMG vehicles) contains the control elements for the following systems:
- Adaptive Brake (ABR)
- Tire pressure loss warning (RDW) (except code (475) (Tire pressure monitor (premium)))
- PRE-SAFE® system
- Variable speed limiter (except CODE 233 (DISTRONIC PLUS), except CODE 990 (AMG vehicles), except CODE 494 (USA version) and except CODE 460 (Canada version))
- Cruise control (except CODE 233 (DISTRONIC PLUS), except CODE 990 (AMG vehicles))
For vehicles with CODE 233 (DISTRONIC PLUS) or with CODE 990 (AMG vehicles) the variable speed limiter and the cruise control are integrated into the radar sensors control unit (N62/1).
The Electronic Stability Program control unit (except CODE 233 (DISTRONIC PLUS), except CODE 990 (AMG vehicles)) or the Premium Electronic Stability Program control unit (with CODE 233 (DISTRONIC PLUS) or with CODE 990 (AMG vehicles)) does the following:
- Reading in of sensors, pickups and signals
- Evaluation of input factors
- Actuation of components
Reading in of sensors, pickups 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 following signals are read in via direct lines:
- Circuit 30
- circuit 31
- 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
The Electronic Stability Program control unit (except CODE 233 (DISTRONIC PLUS), except CODE 990 (AMG vehicles) or the Premium Electronic Stability Program control unit (with CODE 233 (DISTRONIC PLUS) or with CODE 990 (AMG vehicles) is a chassis CAN user. It communicates for instance with the following control unit:
- Instrument cluster (A1)
Vehicle dynamics CAN
Signals are read in via the chassis CAN from the following components:
- Yaw rate sensor for lateral and longitudinal acceleration (B24/15)
- Radar sensors control unit (with CODE 233 (DISTRONIC PLUS), except CODE 990 (AMG vehicles))
- DISTRONIC electric controller unit (A89) (with CODE 233 (DISTRONIC PLUS) or with CODE 990 (AMG vehicles))
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 (N10/2) (brake light actuation)
- Yaw rate sensor for lateral and longitudinal acceleration (power supply)
Variants
There are 2 ABR variants in use:
- ABR Basic system (except CODE 233 (DISTRONIC PLUS), except CODE 990 (AMG vehicles))
- ABR Premium system (with CODE 233 (DISTRONIC PLUS) or with CODE 990 (AMG vehicles))
| Technical data Designation |
Unit | Values | Tolerance range | Remarks |
|---|---|---|---|---|
| Electronic Stability Program control unit (except CODE 233 (DISTRONIC PLUS)), except CODE 990 (AMG vehicles)) or Premium Electronic Stability Program control unit (with CODE 233 (DISTRONIC PLUS) or with CODE 990 (AMG vehicles)) | ||||
| Voltage supply | V | 13.8 | - | |
| Voltage limits | V | 9, 3 9, 8 |
Lower limits
|
|
| 16, 8 17, 5 |
Upper limits
|
|||
| Power consumption | mA | 500 | Standby | |
| A | 40 | Action | ||
| μA | 300 | Quiescent current | ||
| Reverse polarity protection | - | - | - | Yes |
| Special features | - | - | - | All relevant parameters for changing over functions are coded per software calibration number (SCN). |
| Flash capability/coding capability | - | - | - | Yes/yes |
| Yaw rate, lateral and longitudinal acceleration sensor | ||||
| Model | - | - | - | Sensor cluster |
| Voltage supply | - | - | - | Terminal 30 |
| Left front axle rpm sensor Right front axle rpm sensor Left rear axle rpm sensor Right rear axle rpm sensor |
||||
| Model | - | - | - | Digital sensor |
| Voltage supply | - | - | - | Terminal 30 |
| Frequency | Hz | 0 - 5000 | - | - |
| Stop lamp switch | ||||
| Model | - | - | - | Digital sensor |
| Voltage supply | - | - | - | Circuit 15R |
| Adaptive Brake (ABR) wiring diagram (N30/4) | PE42.47-P-2000-97XAA PE42.47-P-2000-97XAB |