Description
Electric central locking lock for the right rear door Citroën C3. Rear door behind the front passenger. 6 pins.
This electric lock for the central locking system is a direct-fit replacement for the right rear door (passenger-side rear door) of Citroën C3 models. Designed for professional workshops and competent DIY mechanics, the unit restores reliable locking and unlocking through the central locking system. The part is commonly searched and identified by product codes 46977980 and 9138C1, making it easy to find and order as a spare part.
Technical Information
- Manufacturer: Stellantis / Citroën
- Model: Citroën C3 — Right Rear Door (Passenger-Side Rear Door)
- Product Codes: 46977980, 9138C1, 9138.C1
- Additional Numbers: NFP
Function and Application
The unit is the electric locking mechanism for the right rear door and forms part of the vehicle’s central locking system. It houses the actuator that moves the latch, the mechanical locking components and the electrical connector (6-pin) that supplies power and control signals. When functioning correctly, it secures the door, operates with remote locking, and signals the vehicle body control module about the door status.
Replacement Procedure
Typical replacement steps for experienced technicians or competent DIYers:
- Disconnect the battery before starting to avoid short circuits and prevent damage to vehicle electronics.
- Remove the interior door trim and protective moisture barrier to access the lock assembly.
- Disconnect the 6-pin electrical connector and unclip any linkage rods connected to the latch mechanism (note positions to ensure correct reassembly).
- Remove the mounting screws or bolts that secure the lock to the door and extract the old unit from the door shell.
- Install the new lock: position the unit, tighten fasteners, reconnect linkages and the 6-pin connector, and reseal the moisture barrier.
- Reconnect the battery and test locking/unlocking with the remote, interior switch and manual operation. Check for smooth operation and correct door alignment.
Installation Recommendations
- Always disconnect the battery before removing or installing the unit.
- Handle plastic retaining clips and rod connectors carefully; replace damaged clips to prevent rattles or incorrect operation.
- Check and lubricate mechanical linkages and the latch contact points with a suitable lubricant to prolong life and ensure smooth action.
- Inspect the door wiring harness and connector for corrosion or damage and repair as needed before final assembly.
- After installation, verify central locking operation from all control points (remote, door switch, and manual lock) and ensure the door closes and seals correctly.
Why This Part Fails Most Often
- Water ingress and corrosion: Moisture entering the lock area can corrode electrical contacts and metal components, causing intermittent or permanent failure.
- Wear of internal gears or actuator motor: Repeated cycles over years can wear small plastic gears or the motor, leading to loss of function.
- Mechanical damage: Broken plastic tabs, bent linkage rods or impacts to the door can damage the latch mechanism.
- Connector and wiring faults: Corroded or damaged electrical connectors and wiring can interrupt power or signals to the actuator.
Search by product codes 46977980 or 9138C1 to ensure you order the correct unit for the Citroën C3 right rear door. Suitable for professional repairs and for experienced DIY replacements when following safety and installation recommendations.
