Antilock Braking System (ABS)

Circuit Diagram:

RED BRAKE TELLTALE COMMANDED ON BY ABS CONTROL MODULE
The brake warning telltale can be turned On by the ABS control module in the event that base brake performance is degraded by an ABS fault (such as an open rear motor circuit when the piston is not home).

CODE PARAMETERS
Code 86 will set if:
^ The ABS control module commands the brake telltale to turn On.

DIAGNOSTIC AIDS
This code is set to provide notification that the ABS control module turned On the brake telltale.

Diagnose the accompanying ABS codes first. If the brake telltale remains On after the ABS fault is corrected, diagnose the problem associated with the brake telltale (park brake switch, low brake fluid, etc.).

Code 86 should only set in conjunction with another ABS code. If code 86 sets alone, the ABS control module should be replaced.