Description of On-Board Diagnostics

BENDIX ABX-4 BRAKE SYSTEM
The Bendix ABX-4 brake system is monitored by the Controller Antilock Brake (CAB). The CAB monitors critical input and output circuits within the Antilock Brake System (ABS) system of the vehicle, making sure they are operating correctly. Some circuits are tested continuously; others are checked only under certain circumstances. Each circuit monitored by the CAB has a corresponding trouble code assigned to it. Refer to "Diagnostic Trouble Codes Description" for a list and definition of the trouble codes.

NOTE:
^ If the on-board diagnostic system senses that one of the circuits is malfunctioning, it stores the corresponding trouble code in memory.
^ If the on-board diagnostic system stores a diagnostic trouble code and the ABS lamp is inoperative, the CAB will enable the red brake warning lamp.
^ If the malfunction goes away after the trouble code is stored, the trouble code will be erased after 5600 Km/h (3500 miles).