what does it mean if my Ford F-150 EPS system is malfunctioning

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, and screwdrivers.
• Disconnect the negative battery cable to ensure safety while working on electrical components.

2. Inspect and Replace Fuse

• Locate the EPS fuse in the fuse box (consult the owner's manual for specific location).
• Remove the fuse using a fuse puller or pliers.
• Inspect the fuse for a break in the filament. If blown, replace it with a new fuse of the same amperage.

3. Check Power Steering Fluid

• Locate the power steering fluid reservoir and remove the cap.
• If the fluid level is low, add the manufacturer-recommended power steering fluid.
• If the fluid is discolored or contaminated, drain and replace it with fresh fluid.

4. Inspect EPS Motor and Wiring

• Remove any covers or panels obstructing access to the EPS motor.
• Visually inspect the motor and wiring harness for frayed wires or loose connections.
• Secure any loose connections and replace damaged wiring as needed.

5. Test EPS Control Module

• Reconnect the negative battery cable.
• Use a multimeter to test the output voltage from the EPS control module while the vehicle is on.
• If the voltage is outside the manufacturer’s specifications, replace the EPS control module.

6. Steering Angle Sensor Calibration

• If applicable, use an OBD-II scanner to calibrate the steering angle sensor after any repairs.
• Follow the specific calibration procedure provided in the service manual for your F-150.