Description
Overview
The ABS Pump And Control Module For Citroën C4 And Peugeot 307 is an integrated hydraulic pump, electronic control unit and valve block responsible for anti-lock braking and stability interventions. Commonly identified by OEM numbers 9657352780, 4541J1, 0265800395 and 0265231486, this unit is often searched by part number for fast replacement.
Key Benefits
- Direct Fit For Citroën C4 And Peugeot 307 (Verify OEM Number)
- Restores ABS Functionality And Braking Safety
- Saves Diagnostic Time When Replacing By Known Part Number
Function And Common Failures
The unit controls brake pressure modulation during ABS and stability control events by combining an electric motor driven hydraulic pump with solenoid valves and an electronic control module. Typical failure modes include electronic faults, worn pump motor, hydraulic leaks, corroded electrical connectors and internal valve block contamination. Symptoms are ABS warning light, reduced or no ABS function, irregular brake pedal feel, or noise from the pump during activation.
Replacement And Installation
Replacement requires basic mechanical skills and a diagnostic tool capable of PSA coding (for example Diagbox or Lexia). Procedure overview:
- Disconnect The Battery Before Work And Stabilize The Vehicle On Level Ground.
- Access Unit Usually Located Near The Brake Master Cylinder; Remove Mounting Bolts.
- Carefully Disconnect Electrical Connectors And Brake Lines; Use Proper Line Wrenches To Avoid Damage.
- Install New Unit, Secure Bolts To Manufacturer Specification, Reconnect Lines And Electrical Plugs.
- Bleed The Brake System Following Manufacturer Procedure; Run Automatic ABS Bleed Sequence If Available.
- Perform Control Unit Coding/Initialization With Appropriate Diagnostic Tool To Ensure Proper Function.
Follow Manufacturer Torque And Safety Specifications. If Unsure, Consult The Repair Manual Or A Professional Workshop.
Technical Information
- Manufacturer: PSA (Citroën Peugeot)
- Model: Citroën C4; Peugeot 307
- Product Codes: 9657352780; 4541J1
- Other Numbers: 0265800395; 0265231486; 9649988280
Always Verify Compatibility By Comparing The Existing Part Number And Connector Layout. Professional Installation And Proper Bleeding/Coding Are Recommended To Restore Full ABS And Stability Control Performance.
