Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSFORD2009FUSION SEL, 3.0 1, FWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1245 (VEHICLE DYNAMIC SYSTEMS)DIAGNOSTIC TESTSANTI-LOCK CONTROL - TRACTION CONTROL AND STABILITY ASSISTSYMPTOM CHART

2009 Ford Fusion SEL, 3.0 1, FWD

Symptom Chart

2009 Ford Fusion SEL, 3.0 1, FWDSECTION Symptom Chart

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
The red BRAKE warning indicator and the yellow ABS warning indicator are both illuminated	DTCs present in the ABS module	REFER to the ABS Module DTC Chart in this article.
The ABS warning indicator is never on	Wiring, terminals or connectors Instrument cluster	REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article to continue diagnosis of the warning indicator.
The red BRAKE warning indicator is always/never on	Wiring, terminals or connectors Parking brake switch Brake fluid level switch (part of the master cylinder) Brake fluid level Instrument cluster	REFER to INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article to continue diagnosis of the warning indicator.
The stability/traction control indicator (in the instrument cluster) is always/never on	DTCs present in the ABS module or PCM PCM Instrument cluster	RETRIEVE and RECORD any ABS module DTCs. Go to the ABS Module DTC Chart. If there are no DTCs present in the ABS module, RETRIEVE and RECORD any PCM DTCs. REFER to the appropriate Engine Performance article. If there are no PCM DTCs, REFER to Diagnosis and Testing in INSTRUMENT CLUSTER (IC) AND WARNING CHIMES article.
The stability/traction control OFF indicator (in the switch) is always/never on	Wiring, terminals or connectors Stability/traction control switch PCM	Go to Pinpoint Test Q .
The stability/traction control indicator (in the instrument cluster) is flashing at all times	NOTE: It is normal for the indicator to flash during a traction control event. ABS module not configured or system not initialized	RETRIEVE and RECORD all ABS module DTCs and Go to the ABS Module DTC Chart.
No communication with the ABS module	Wiring, terminals or connectors ABS module	REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the no communication concern.
The stability/traction control system cannot be disabled/enabled	Fuse Wiring, terminals or connectors Stability/traction control switch PCM	Go to Pinpoint Test P .
The stability/traction control system is inoperative	Stability/traction control system is turned off Stability/traction control system is not configured Fuse Wiring, terminals or connectors ABS wheel speed sensor fault High-speed controller area network (HS-CAN) bus fault PCM	Go to Pinpoint Test P .
ABS false activation, ABS too sensitive, ABS activates on a normal stop	Brake pads Brake calipers and/or guide pins	ELIMINATE the base brake system as the cause of the problem. REFER to Diagnosis and Testing in BRAKE SYSTEM - GENERAL INFORMATION article.
	Parking brake shoes out of adjustment (dragging)	CHECK and if necessary, ADJUST the parking brake shoes. REFER to PARKING BRAKE AND ACTUATION article.
	Wheel speed sensor tone rings	INSPECT the wheel speed sensor tone rings for damaged teeth and excessive air gap. INSTALL new wheel speed sensor rings as necessary. For front tone rings, REFER to Wheel Speed Sensor Ring - Front in this article. For rear tone rings, REFER to Wheel Hub Removal and Installation in WHEEL HUBS AND BEARINGS - FULL FLOATING AXLE - DANA article.
	Wheel speed sensor	Go to Pinpoint Test J .
	Chafed wheel speed sensor wire insulation or pinched wheel speed sensor wire	INSPECT the wiring harness from the wheel speed sensor knuckle to the frame and from the rear axle to the frame. REPAIR as necessary.
	Open or shorted wheel speed sensor circuit	Go to Pinpoint Test I .
Vehicle pulls during braking	Brake pads Brake discs Brake calipers and/or guide pins Wheel speed sensor	DISCONNECT the ABS module electrical connector. DRIVE the vehicle and VERIFY the condition. If the condition is still present, REFER to BRAKE SYSTEM - GENERAL INFORMATION article to diagnose the base braking system. If the condition is no longer present, go to Pinpoint Test J .
Wheels lock up	Brake pads Brake calipers and/or guide pins	ELIMINATE the base brake system as the cause of the problem. REFER to Diagnosis and Testing in BRAKE SYSTEM - GENERAL INFORMATION article.
	Parking brake shoes out of adjustment (dragging)	CHECK and if necessary, ADJUST the parking brake shoes. REFER to PARKING BRAKE AND ACTUATION article.
	Hydraulic outlet (dump) valve Leaky inlet (isolation) valve during ABS (soft)	BLEED the HCU. REFER to Brake System Bleeding in BRAKE SYSTEM - GENERAL INFORMATION article. TEST the system for normal operation. If the symptom returns, INSTALL a new HCU. REFER to Hydraulic Control Unit (HCU) in this article.
Soft/excessive brake pedal travel	Air in brake system Brake calipers and/or guide pins Brake flexible hose Brake master cylinder Brake pads Brake pedal	ELIMINATE the base brake system as the cause of the problem. REFER to Diagnosis and Testing in BRAKE SYSTEM - GENERAL INFORMATION article.
	Inlet (isolation) valve or hydraulic outlet (dump) valve Leaky inlet (isolation) valve during ABS applications (soft)	BLEED the hydraulic control unit (HCU). REFER to Brake System Bleeding in BRAKE SYSTEM - GENERAL INFORMATION article. TEST the system for normal operation. If the symptom returns, INSTALL a new HCU. REFER to Hydraulic Control Unit (HCU) in this article.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.