MODEL | 207.3/4 |
up to model year 2014 |
Shown on model 207.3 without CODE 233 (DISTRONIC PLUS) |
A7/3 | Traction system hydraulic unit |
N30/4 | Electronic Stability Program control unit |
P42.45-2694-04
Location
The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit (N30/7) with CODE 233 (DISTRONIC PLUS) is at the front left inside the engine compartment on the traction system hydraulic unit.
Task
The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit with CODE 233 (DISTRONIC PLUS) includes the controls for the following systems:
- Adaptive Brake (ABR)
- Speed-sensitive power steering (SPS) with CODE 213 (Speed-sensitive power steering)
- Tire pressure loss warning except CODE 475 (Tire pressure monitor (premium))
– PRE-SAFE® system
- Variable speed limiter except CODE 233 (DISTRONIC PLUS), except CODE 494 (USA version) and except CODE 460 (Canada version)
- Cruise control except CODE 233 (DISTRONIC PLUS)
On vehicles with CODE 233 (DISTRONIC PLUS), the variable speed limiter and cruise control are integrated in the radar sensors control unit (N62/1).
The Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit with CODE 233 (DISTRONIC PLUS) has the following tasks:
Reading in of sensors and signals
Evaluation of input factors
Actuation of components
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 following signals are read in via direct lines:
- circuit 30
– Circuit 31
- Brake vacuum sensor (B64/1) with CODE B03 (ECO start/stop function)
- 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 Electronic Stability Program control unit except CODE 233 (DISTRONIC PLUS) or the Premium Electronic Stability Program control unit with CODE 233 (DISTRONIC PLUS) is a subscriber on the chassis CAN. 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)
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)
- Speed-sensitive power steering solenoid valve (Y10) (with CODE 213 (Speed-sensitive power steering))
- Power steering pump quantity control valve (Y10/1)
- Yaw rate sensor for lateral and longitudinal acceleration (power supply)