Description
Power steering control unit for CITROËN C1, PEUGEOT 107 and TOYOTA Aygo
This JTEKT electric power steering (EPS) control unit is a direct-fit electronic module used on Citroën C1, Peugeot 107 and Toyota Aygo models. It manages the electric motor assistance, processes signals from the torque/steering sensors and vehicle speed, and adjusts steering assistance for low-speed maneuvers and high-speed stability. Commonly searched by part numbers such as 89650-0H011, 00652180 or JL501-004890, this ECU is an essential replacement when EPS warning lights appear or electric assist becomes inconsistent.
Benefits and Fitment
Designed for workshop use and DIY repair, this unit restores precise steering assistance, reduces steering effort at low speeds and eliminates intermittent loss of power assist. It is suitable for the original equipment systems fitted to Citroën C1, Peugeot 107 and Toyota Aygo where the listed part numbers match. Using the correct ECU avoids annoying steering warnings and potential limp-mode behaviors caused by a faulty steering control unit.
How It Works
The EPS control unit interprets inputs from the steering torque sensor, steering angle sensors and speed signals, then controls the electric motor to provide adaptive assistance. It also monitors internal diagnostics and will trigger a fault code or dashboard warning if sensor inputs are out of range or if the motor/driver circuitry develops a fault.
Replacement Procedure (Overview)
- Disconnect the battery before any work to prevent electrical damage.
- Access the module—usually located near the steering column or behind the dash depending on the model—remove trim panels and mounting hardware.
- Disconnect all electrical connectors and remove the old unit.
- Install the replacement unit, secure mounting points and reconnect connectors firmly.
- Reconnect the battery and perform required system initialization: steering angle sensor reset, EPS self-test and, if needed, module coding or parameter adaptation using a compatible diagnostic tool.
Installation Recommendation
Always disconnect the vehicle battery before removing or installing the unit and follow the vehicle manufacturer’s procedure to avoid damage. After installation, perform steering angle sensor calibration and EPS system checks with a professional diagnostic tool. If coding or adaptation is required, use appropriate PSA/Toyota diagnostic equipment or a qualified workshop to ensure full functionality and remove fault codes.
Why The Part Fails Most Often
Failing EPS control units are usually caused by internal electronic component wear, water ingress, connector corrosion or voltage spikes from a weak/incorrectly handled battery. Symptoms include an illuminated EPS or power steering warning light, sudden loss of assist, or inconsistent steering effort. Preventive measures include ensuring secure electrical connections, avoiding prolonged exposure to moisture and maintaining vehicle battery health.
Technical Information
- Manufacturer: JTEKT
- Model: Electric Power Steering Control Unit (EPS)
- Product Codes: 89650-0H011, 89650-011
- Additional Numbers: B0, 00652180, 1612847580, 6900002387, JL501-004890, 225000-1190, 652180
Search Tips
Customers and technicians frequently search using OEM part numbers (e.g. 89650-0H011, 00652180 or JL501-004890). Use these references when looking for a direct-fit replacement for Citroën C1, Peugeot 107 and Toyota Aygo electric steering systems.
