Diagnosis & Testing: Notes
WARNING: This page is about a different car, the 1997 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
Diagnostic Trouble Codes (DTCs) are stored in Controller Anti-Lock Brake (CAB) memory. DTCs are cleared using scan tool or automatically cleared after 255 ignition on-off cycles. CAB will retain DTCs with ignition off or if battery is disconnected. CAB can store more than one DTC at a time and will display number of ignition cycles since most recent DTC was stored.
DTCs detected by CAB can be latching or non-latching. Latched DTCs will disable ABS function until ignition is cycled. Non-latching DTCs occur when system fault is actually occurring causing warning light(s) to light. Warning light(s) is turned off when system fault goes away; however, in most cases a DTC will set.