ABS Diagnostic Trouble Codes

Diagnostic Trouble Codes (DTCs) are kept in the controller's memory until either erased by the technician using the DRB, or erased automatically after 3500 miles. DTCs are retained by the controller even if the ignition is turned OFF or the battery is disconnected. More than one DTC can be stored at a time. When accessed, the number of occurrences and the DTC that is stored are displayed. Most functions of the CAB and the ABS system can be accessed by the technician for testing and diagnostic purposes using the DRB.

LATCHING VERSUS NON-LATCHING DIAGNOSTIC TROUBLE CODES
Some DTCs detected by the CAB are "latching" codes. The DTC is latched and ABS braking is disabled until the ignition switch is reset. Thus, ABS braking is non-operational even if the original DTC has disappeared. Other DTCs are non-latching. Any warning lamps that are turned ON are only turned ON as long as the DTC condition exists; as soon as the condition goes away, the amber ABS warning lamp is turned OFF, although, in most cases, a DTC is set.