Initial Inspection and Diagnostic Overview

Brake System (Red) Warning Lamp
To check the brake system warning lamp, turn the ignition key to the Start position. The red warning lamp should glow momentarily. The warning lamp will also illuminate if the parking brake mechanism is not fully released. If the warning lamp fails to glow, service of the electrical system is indicated. If the warning lamp illuminates with the ignition key in the Run position, check and repair the conventional brake system as required. If the conventional brake system is found to be operating properly, check the anti-lock brake system for stored codes as outlined under ``Accessing Flashout Codes.'' In certain instances both the red and yellow warning lamps will glow simultaneously. If this occurs, check and repair the conventional brake system as required. If the red warning lamp continues to glow, refer to the ``Warning Lamp Condition Chart,'' Fig. 4, for proper diagnostic and testing procedures, then refer to Tests A through F, as required.
Anti-Lock Brake System (Yellow) Warning Lamp
To check the anti-lock brake system warning lamp, turn the ignition key to the On position. The yellow warning lamp should glow for approximately two seconds and should then shut off. If the warning lamp fails to glow, or glows continuously, refer to the ``Warning Lamp Condition Chart,'' Fig. 4, for proper diagnostic and testing procedures, then refer to Tests A through F, as required. In addition, if the warning lamp continues to glow during vehicle operation, check the anti-lock brake system for stored codes as outlined under ``Accessing Flashout Codes.''






Warning Lamp Condition Chart