In modern Ram 1500s with electric power steering, the EPS motor is integrated with the steering gear and controlled by an EPS control module. Power is supplied from the battery through the engine-compartment fuse/relay box, and the fuse labeling (often “PWR STEER,” “EPAS,” or “EPS”) and whether a relay is used can differ by production year. Always refer to the fuse box cover diagram for your specific truck to confirm the designation and amperage.
How the Ram 1500's electric power steering works
The EPS system provides steering assist that changes with vehicle speed and steering input. The EPS motor draws current from the electrical system through a dedicated feed and is controlled by the EPS control module and the vehicle’s electronic network. This eliminates the hydraulic pump used in older setups and relies on a fuse-protected power supply to the motor.
Fuse and relay locations in the Ram 1500
The primary power feed to the EPS pump generally runs from the engine-bay fuse/relay box. In many Ram 1500s you’ll find a fuse labeled PWR STEER, EPAS, or EPS, and sometimes a nearby relay in the same box or a nearby connector. The exact layout depends on the model year and region.
Typical fuse rating and relay presence by year
Most Ram EPS installations use a dedicated fuse in the engine bay, commonly in the 15A–20A range. Some years also employ a separate relay to power the EPS motor; others feed the EPS through the vehicle’s control modules without a distinct relay. Check your specific year’s fuse box diagram to confirm the rating and whether a relay is present.
How to inspect the fuse/relay
To check the fuse or relay feeding the EPS pump, follow these steps:
- Open the under-hood fuse/relay box and locate the diagram on the box cover (or in the owner’s manual) to identify the fuse labeled PWR STEER, EPAS, or EPS.
- Pull the designated fuse to inspect it. A blown fuse will show a broken filament or no continuity when tested with a multimeter.
- If the fuse is blown, replace it with a fuse of the same amperage rating from the same position in the box.
- If the new fuse blows again, inspect the EPS wiring harness, connectors at the EPS motor, and nearby grounds for damage or corrosion. If you’re unsure, seek professional service—not driving with a suspected EPS fault.
Proceed with caution: diagnosing EPS electrical faults can be complex and involves the vehicle’s computer systems. If warning lights are active or you’re unable to identify a simple blown fuse, have a qualified technician inspect the system.
Conclusion for Ram 1500 owners
In general, yes—the Dodge Ram 1500’s electric power steering system is fed by a fuse and, depending on the model year, may also rely on a relay in the engine bay. To confirm the exact arrangement on your truck, consult the fuse box diagram for your year and trim. Regularly check for EPS warning indicators and ensure connectors to the EPS motor are clean and secure.
Summary
The Ram 1500’s EPS pump is powered through a fuse—and often a relay—in the engine bay. The exact labeling, amperage, and presence of a relay vary by year, so verify with your vehicle’s fuse box diagram or owner’s manual. If you experience steering warning lights or repeated fuse-blow issues, seek professional inspection to diagnose wiring or control-module faults.