Description
Standalone electric power steering controller kit for Toyota Prius and Yaris EPAS steering systems in motorsport applications.
This electronic controller kit is engineered to operate the electric power steering (EPAS / EPS) systems from Toyota Prius and Toyota Yaris models. The durable Toyota EPAS system is a proven choice for circuit racing, rally, drift, autocross, kit cars, and classic retrofits (including Ford Escort, Toyota Starlet, Opel Ascona, and classic Minis).
The original Toyota steering ECU requires vehicle speed sensor and engine communication signals from the vehicle network to activate steering assist. Without these signals, the factory controller remains in an inactive failsafe mode. This module emulates the necessary communication signals, allowing the steering column to operate standalone in any vehicle chassis. The included cockpit-mount rotary potentiometer enables the driver to continuously adjust the level of steering assistance from maximum assist to a firmer, direct racing feel.
Features:
- Operating Principle: Emulates factory speed and engine signals, enabling standalone EPAS operation without factory engine management or vehicle CAN networks.
- Assist Adjustment: Continuous manual assist control via a cockpit-mounted potentiometer.
- Wiring: Pre-wired harness with the dedicated ECU plug connecting directly into the factory Toyota steering column ECU socket.
- Power Supply: Connects to vehicle switched +12V ignition power and chassis ground.
- Applications: Circuit racing, rally, drift, kit cars, and custom classic vehicle retrofits.
Important Installation Notice:
Main Power Supply: This controller kit operates low-current signal circuitry only. The primary high-current power cables supplying the steering motor and ECU must be wired directly to the vehicle battery using heavy-gauge cables and an appropriate inline fuse (typically 50A to 60A rating).
Package Includes:
- 1 pc controller module
- Pre-wired harness with factory-style steering column ECU plug
- Cockpit-mount potentiometer with control knob
- Wiring and installation diagram
Technical Specifications:
- Operating Voltage: 12V DC
- Control Mode: Signal emulation with analog potentiometer input
- Compatibility: Toyota Prius and Toyota Yaris column EPAS units with matching ECU connector
Compatibility:
| Make | Model | Steering System | Application |
|---|---|---|---|
| Toyota | Prius | Column EPAS | Factory or standalone motorsport retrofit |
| Toyota | Yaris | Column EPAS | Factory or standalone motorsport retrofit |
| Universal | Motorsport, kit car, and classic builds | Prius / Yaris EPAS column | Standalone power steering conversion |
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