Definitions

Definitions
These explanations refer only to this assembly group: ABS On Board Diagnostic (OBD). These definitions are not necessarily generally valid.
ABS
Anti-locking brake system. Further information on the ABS can be found in the relevant self study programs.
Display group number = Read measured value block
ASR
Traction Control System
Data bus
Transportation of data. To do this, the electrical signals are brought into a certain format (BUS). Further information can be found in Self-study programs. Also called CAN Bus.
Data bus low (high)
The voltage used to transport the data is low (high). Further information can be found in self study programs.
Speed sensor
Sends speed signals to control module.
EBD
Electronic brake pressure distribution
EDL
Electronic differential lock
On Board Diagnostic (OBD)
The capability of the control module:
^ Recognize Diagnostic Trouble Codes (DTCs)
^ React to DTCs
^ Store DTCs
and make them available in the Measured value block. Further information on this can be found in Self-study programs and test unit instruction manual.
Performing On Board Diagnostic (OBD)
Connecting the Scan Tool to be able to check the DTC memory. Further information on this can be found in Self-study programs and test unit instruction manual.
Performing electrical check
A targeted check of the electronic components by performing certain measurements.
No communication
There is no connection for exchanging information between the control modules.
Short to Ground
Current flows incorrectly to Ground without supplying a consumer.
Short to positive
Current flows incorrectly to a live component without supplying a consumer.
Brake pressure release solenoid -F84
The trip switch is installed in the brake servo and is required by the control module to recognize the braking desired by the driver.
Magnetic coil for brake pressure, in brake booster,-N247
The brake pressure solenoid is installed in the brake servo and ensures that a pre-pressure of 10 bar is available for the ABS/ESP pump.
Read measured value block
The control module can transfer a considerable amount of test data. This test data delivers information on the operational condition of the system and/or sensors connected to it. In many cases the transferred test data supports troubleshooting and malfunction repair. The test data has been summarized into single display groups because all the information cannot be evaluated at the same time. The information can be selected via display group numbers.
EBC
Engine braking control
Program card version
Always use the most up-to-date program card. Further information can be found in the test unit operating instructions.
Sporadic
Happens occasionally
Infinity Ohms
The resistance is infinite, open circuit.