Symptom Chart: Anti-Lock Brake System (ABS) and Stability Control
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .
| Condition | Possible Sources | Actions |
|---|---|---|
| A module does not respond to the diagnostic scan tool | Fuse Wiring, terminals or connectors ABS module concern |
REFER to: Communications Network . |
| The brake warning indicator is always or never on | Low brake fluid level Brake fluid level sensor Parking brake applied Parking brake switch IPC concern ABS concern |
RETRIEVE and DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). If there are no ABS module Diagnostic Trouble Codes (DTCs), DIAGNOSE the brake warning indicator. REFER to: Instrumentation, Message Center and Warning Chimes . |
| The ABS warning indicator is always or never on | IPC concern ABS concern |
RETRIEVE and DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). If there are no ABS module Diagnostic Trouble Codes (DTCs), DIAGNOSE the ABS warning indicator. REFER to: Instrumentation, Message Center and Warning Chimes . |
| The stability-traction control OFF indicator (sliding-car OFF icon) is always on | IPC concern ABS concern |
RETRIEVE and DIAGNOSE all ABS module Diagnostic Trouble Codes (DTCs). If there are no ABS module Diagnostic Trouble Codes (DTCs), DIAGNOSE the stability-traction control OFF indicator. REFER to: Instrumentation, Message Center and Warning Chimes . |
| ABS false activation, ABS too sensitive, ABS activates on normal stop | Refer to the Pinpoint Test | GO to Pinpoint Test S |
| The brake vacuum pump runs all the time | Refer to the Pinpoint Test | GO to Pinpoint Test T |
| The brake vacuum pump never runs | Refer to the Pinpoint Test | GO to Pinpoint Test T |
| The traction control system is inoperative or cannot be disabled | Refer to the Pinpoint Test | GO to Pinpoint Test J |
| The launch control system is inoperative | Refer to the Pinpoint Test | GO to Pinpoint Test R |
| The message center displays Launch Control Not Available | Refer to the Pinpoint Test | GO to Pinpoint Test R |