No communication with the ABS

Read the instructions below then start the fault diagnostic procedure.

Symptom: No communication with the ABS

No communication with the ABS

Fault symptoms

No communication with the ABS

Conditions

The following conditions are applicable:

•	Ignition switch in ON position

Diagnostic help

First check the fuses for the ABS control module and that no slide-out of the data link connector pins for communication with the ABS has occurred.

Then check whether the ABS control module is awake and allows diagnostics communication. If this is the case, check whether the diagnostics tool works on another car.

If no fault can be found, rectify the communication lead between the ABS and the data link connector.

Check wiring harness.

Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short-circuits in the leads. Observe the multimeter, test lamp or diagnostic tool during the test.