Description
This solenoid is turned on in accordance with signals from the skid control ecu and controls the pressure on the wheel cylinders to control the braking force.
The solenoid and solenoid relay are built into the abs and traction actuator.
Hint:
Dtcs c0226/21, c0236/22, c0246/23, c0256/24 and c1225/25: the skid control ecu begins to detect these dtcs when the vehicle speed exceeds 6 km/h (4 mph).
Wiring diagram
Inspection procedure
Result
Hint:
The dtcs may be stored due to a malfunction in the connector terminal.
Replace abs and traction actuator
Description
If a dtc related to the motor line is stored, the vsc fail (fail-safe) relay cuts off the power supply to the vsc mtr relay and performs the fail-safe operation.
While the abs, trc, vsc, or ba is operating, the skid control ecu turns the vsc fail relay on and activates the pump motor in the abs and traction actuator.
These dtcs may be stored if the motor relay (+bm) voltage becomes lower than the dtc detecting condition due to insufficient output from the battery or alternator.
Hint:
Dtcs c0273/13, c0274/14 and c1361/91: the skid control ecu begins to detect these dtcs when the vehicle speed exceeds 6 km/h (4 mph).
Wiring diagram
Inspection procedure
Ok: the operation sound of the abs motor can be heard.
Standard resistance: below 1
1 Relay block.
Standard resistance
Standard resistance
Standard voltage
Standard resistance
Standard resistance
Result
Replace abs and traction actuator assembly
Basic repair hint
Hints on operations
1
Attire
Always wear a clean uniform.
A hat and safety shoes must be worn.
2
Vehicle protection
Prepare a grille cover, fender cover, seat cover and floor mat
before starting the
operation.
3
Safe opera ...
Breakdown assistance
Vehicle features and
options
This chapter describes all standard, country-specific
and optional features offered with the series.
It also describes features and functions that are
not necessarily available in your vehicle, e.g., due
to the selected options or country versions. This
also applies to ...
BMW Intelligent Personal
Assistant
Concept
BMW Intelligent Personal Assistant is the personal
assistant that expands the voice activation
system with intelligent functions and improves
the interaction in the vehicle.
General information
BMW Intelligent Personal Assistant is available
depending on the national-market version. The
use ...