Symptom Chart
Symptom Chart: ABS and Stability Control
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods
Symptom Chart
| Condition | Possible Sources | Actions |
|---|---|---|
| A module does not respond to the diagnostic scan tool | Fuse Wiring, terminals or connectors ABS module concern SCCM 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 SCCM concern |
RETRIEVE and DIAGNOSE all ABS module and SCCM Diagnostic Trouble Codes (DTCs). If there are no ABS module or SCCM Diagnostic Trouble Codes (DTCs), DIAGNOSE the ABS warning indicator. REFER to: Instrumentation, Message Center and Warning Chimes |
| The traction control OFF indicator (sliding-car OFF icon) is always on | IPC concern ABS concern SCCM concern |
RETRIEVE and DIAGNOSE all ABS module and SCCM Diagnostic Trouble Codes (DTCs). If there are no ABS module or SCCM Diagnostic Trouble Codes (DTCs), DIAGNOSE the ABS warning indicator. REFER to: Instrumentation, Message Center and Warning Chimes |
| ABS false activation, ABS too sensitive, ABS activates on normal stop | Front or rear suspension concern | ELIMINATE the front or rear suspension as the cause of the problem. REFER to: Suspension System |
| RCM mounting | CONFIRM the RCM is mounted correctly. REINSTALL as necessary. REFER to: Restraints Control Module (RCM) | |
| Loose wheel speed sensor or excessive air gap | INSPECT wheel speed sensor for looseness or excessive air gap. TIGHTEN or INSTALL new as necessary. REFER to: Front Wheel Speed Sensor REFER to: Rear Wheel Speed Sensor | |
| Wheel speed sensor encoder damaged, rusted or contaminated with foreign material | INSPECT the encoder for damage, rust and foreign material. CLEAN, REMOVE foreign material or INSTALL new as necessary. REFER to: Front Wheel Bearing REFER to: Wheel Bearing and Wheel Hub | |
| Parking brake shoes out of adjustment (dragging) | CHECK and if necessary, ADJUST the parking brake. REFER to: Parking Brake Cable Adjustment | |
| The traction control system is inoperative or cannot be disabled - vehicles not equipped with a message center | Refer to the Pinpoint Test | GO to Pinpoint Test E |
| The traction control system is inoperative or cannot be disabled - vehicles equipped with a message center | Refer to the Pinpoint Test | GO to Pinpoint Test Q |