Vehicles after change point in 1982
CHECKING FUNCITON OF ABS
An electronic circuit in the control unit
monitors ABS constantly.
The function must be checked when the ABS
indicator lamp does not go out, comes on while
driving or does not come on when turning on
the ignition or performing jobs on the ABS.

The function is checked with BMW service test
unit.
Connect tester on wire harness and control unit
with a suitable plug.
See wiring diagram in ABS nominal value
microfiche.
Important!
Each started step must be finished completely,
without a break.

Servicing ABS:
Basically the ABS does not require servicing.
Check brake lines to and from the hydraulic
unit for correct routing and leaks together
with the general brake system.