ESP control unit, component description - GF42.45-P-5118MCU

MODEL 451.3/4 

Location 

The ESP control unit is located on the hydraulic unit on the vehicle underfloor.

Task 

The ESP control unit controls the following systems:

• Electronic Stability Program (ESP)
• Acceleration Slip Regulation (ASR)
• Engine braking regulation (EBR)
• Antilock brake system (ABS)
• Electronic brake force distribution (EBV)

Communication and influence of ESP control unit on other systems in the vehicle:

• The ESP control unit influences the engine management and power transmission in the case of an ESP control.
• For driver information the control unit actuates the instrument cluster via the Controller Area Network (data bus/CAN bus) (CAN)A1), the instrument cluster actuates the ABS indicator lamp (A1e17) and ESP warning lamp (A1e41).

Direct entries 

• Tml. 15
• Circuit 30
• Circuit 31
• Left front RPM sensor (L6/1)
• Right front RPM sensor (L6/2)
• Left rear RPM sensor (L6/3)
• Right rear RPM sensor (L6/4)
• Stop light switch (S9/1)
• Brake fluid indicator switch (S11)
• Parking brake switch (S12)

Voltage supply 

• Yaw rate, lateral and longitudinal acceleration sensor (B24/15)
• Steering angle sensor (N49)

CAN signals 

The ESP control unit is a CAN subscriber and receives signals from the following sensors:

• Yaw rate, lateral and longitudinal acceleration sensor
• Steering angle sensor