Safety Precautions and Troubleshooting Basics

Notes:
^ ABS is a vehicle safety system; specific system knowledge is absolutely necessary for working on the system.
^ Before working on the ABS system, check DTC memory to determine existing malfunctions and to perform a guided fault finding.
^ Make sure ignition is switched off before disconnecting harness connectors.
^ Observe the appropriate safety precautions when working with brake fluid.
^ Malfunctions in the ABS system are indicated by illumination of the ABS Warning Light -K47-. Certain malfunctions cannot be recognized until vehicle is driven for 30 seconds above the minimum speed of 60 km/h is reached (road test vehicle).
^ If the ABS Warning Light -K47 and the brake and parking brake warning light -K7- are not lit, but the brake system is not functioning properly, check for malfunctions in traditional brake system components.

Technical information required
Electrical Wiring Diagrams, Troubleshooting & Component Locations
Brake System from m.y. 1997
Suspension, Wheels, Steering
Additional information may be required