Bosch DISBLAY DDU 7 Manual page 108

12 | Error Memory
12.4.2
108 / 160
Open Line Detection
The implementation of open line detection consists of pull up resistors being ac‐
tivated and deactivated; evaluating the behaviour of the measured value detects
cable breakage, regardless of the pull up resistor being activated by the user.
Open line detection is triggered as shown in the illustration:
DDU 7 Manual Bosch Motorsport