Description
Delphi Injection Control Unit 1.4 HDi 66 kW. It is from a Citroën C3.
This Delphi ECU is a direct-fit injection control unit for the 1.4 HDi diesel engine (66 kW) commonly found in Citroën C3 and compatible PSA models. Designed for professional workshops and experienced DIY mechanics, the unit manages fuel injection and engine operating parameters to ensure smooth running, efficient fuel consumption and compliance with emissions systems. The listing includes original product codes frequently searched by technicians and spare-part databases, improving findability when looking for replacement ECUs.
Technical Information
- Manufacturer: Delphi
- Model: Citroën C3; Peugeot 1007 (1.4 HDi 66 kW)
- Product Codes: 9654305580, 1940VH
- Additional Numbers: 1940VJ, NFP
Typical Applications: 1.4 HDi 66 kW diesel engines fitted to Citroën C3 and some Peugeot 1007 variants. Use the product codes above to verify fitment against vehicle repair manuals or parts catalogs.
Function And What It Controls
The ECU Regulates Diesel Engine Operation: it controls fuel injection timing and quantity, monitors engine sensors (crankshaft/cam sensors, temperature, pressure sensors), manages glow plug circuits and oversees emissions-related actuators such as EGR and turbo actuator control when present. It Also Provides On-Board Diagnostics And Communicates Over The Vehicle Network (CAN) To Other Control Modules.
Installation Recommendations
- Disconnect The Negative Battery Terminal Before Starting Work To Avoid Short Circuits.
- Locate The ECU According To The Vehicle Repair Manual (Positions Vary: Engine Bay Or Under Dashboard). Remove Any Covers Or Brackets Carefully.
- Unplug Electrical Connectors By Releasing The Locks; Inspect Connectors And Seals For Corrosion Or Damage.
- Install The Unit Without Forcing; Tighten Mounting Bolts To Manufacturer Torque Values.
- After Mechanical Fitment, Reconnect The Battery And Use A Diagnostic Tool To Clear Fault Codes And To Verify Proper Communication With The Immobilizer/Vehicle Network. ECU Replacement On Many PSA Diesel Vehicles May Require Programming Or Pairing With The Immobilizer System Using A Suitable Diagnostic Interface.
- Protect The Unit From Water Ingress And Avoid Excessive Vibration During Reassembly.
Most Common Reasons For Failure
- Water Ingress Or Moisture Causing Corrosion Of Circuitry Or Connectors.
- Heat And Vibration Leading To Solder Joint Fatigue Or Component Failure.
- Electrical Surges Or Poor Grounding Causing Internal Damage.
- Connector Corrosion Or Broken Pins Resulting In Intermittent Faults.
- Ageing Electronics After High Mileage; Unpredictable Malfunctions May Occur Over Time.
For workshops and competent DIY mechanics looking for a reliable replacement ECU, this Delphi unit carries the original product numbers technicians search for during repairs. Fit carefully, verify coding where required, and perform a full diagnostic check after installation to ensure correct engine management and emissions performance.
