Part description

This injection control unit is intended for Citroën and Peugeot cars and is particularly sought after by the exact designation IAW 6LPB and by production numbers. It is an important electronic part that ensures the control of engine functions and the correct cooperation of related systems. When replacing, it is essential that the markings on the unit and the corresponding codes match.

The part is suitable for mechanics as well as more experienced DIYers who are looking for a genuine used PSA auto part and need to keep the unit’s correct markings. For this type of part, not only the catalog number is decisive, but also the specific version of the unit and its software or hardware design.

Technical information

• Manufacturer: Magneti Marelli
• Model: IAW 6LPB
• Other numbers: 9663318680, 9659580780, 1942ZN, 1942ZP

Category: Electrical components | Reg. single injection | Control units

Product codes

Product codes: 9663318680, 9659580780, 1942ZN, 1942ZP

• Citroën: C5
• Peugeot: 307
• Peugeot: 407

Installation recommendations

For this part, the exact replacement procedure may vary depending on the specific model and make of the car. Below is a general and typical procedure for mounting the injection control unit.

1) Before assembly

• Check that the Magneti Marelli IAW 6LPB label matches.
• Compare all numbers on the label with the old part, especially 9663318680 and 9659580780, possibly other designations.
• Inspect the connectors, pins and body of the unit for mechanical damage, oxidation or contamination.
• Make sure the old part has been removed without damaging the wiring and connector latches.

2) Necessary tools and materials

• Basic set of common hand tools
• Suitable tools for gentle release of covers and connectors
• Cleaning agent for electrical contacts suitable for automotive use
• Protective gloves and a clean working environment without excessive humidity

3) Step-by-step assembly procedure

1. Switch off the ignition and secure the vehicle against unwanted movement.
2. Disconnect the battery and allow a reasonable amount of time for the electrical systems to safely disconnect.
3. Access the space to the unit according to the design of the car and carefully remove the obstructing covers.
4. Disconnect the connectors of the old unit carefully, without violence and without prying into the plastic parts.
5. Unfasten the original unit and remove it without damaging the wiring harness.
6. Compare the old and new part side by side, especially the label, connectors, body shape and mounting.
7. If necessary, gently clean the connectors and check that the pins are not bent or pressed.
8. Place the used unit in place and secure it in its original position.
9. Connect the connectors so that they are properly seated and secured.
10. Reinstall all covers and parts that were removed for access.
11. Connect the battery.
12. Perform a basic check after switching on the ignition and verify that the system responds in a standard way.
• 4) Post-assembly checks and test drive/function verification
  • After assembly, check that all connectors are fully secured and the wiring is not under tension.
  • Check for signs of abnormal electrical system behavior.
  • Typically, a diagnostic check and verification of correct communication of the unit is performed after assembly.
  • If the vehicle is operable, a short function verification in normal operation mode follows.

  5) The most common assembly mistakes + how to avoid them

  • Unit replacement by incomplete number – always compare the full designation and other numbers on the label.
  • Damage to connectors – disconnect and connect connectors gently and only in the correct way.
  • Assembly without checking the condition of the pins – always check their flatness and cleanliness before connecting.
  • Manipulation under voltage – always disconnect the battery before disassembly and assembly.
  • Underestimation of diagnostics after replacement – after installation, it is advisable to verify communication and basic functionality of the system.

  Assembly and Coding – Important

  • The unit is used and is “paired” with the original car (VIN/PIN/keys).
  • Commissioning options:
    1. Cloning data from the old drive (EEPROM/Flash) – after the clone, the drive is plug and play.
    2. Virginization and subsequent initialization/telecoding via DiagBox (possibly online) + customization of keys.
  • Recommended to be performed by an expert with PSA service equipment (DiagBox/Lexia/PP2000).
  • Always disconnect the battery before disassembly/assembly and follow the manufacturer’s procedure to avoid damaging the unit.

  Reasons why the part is damaged

  • Moisture and corrosion – penetration of moisture into the connectors or electronics can cause communication failure and the unit itself.
  • Surge in the electrical system – voltage fluctuations, improper handling of the battery or starting can damage the electronics.
  • Damaged cabling – broken wires, short circuits or poor contact in the connectors put a strain on the control unit and the entire system.
  • Vibration and mechanical stress – loose fitting or unprofessional handling can lead to damage to the packaging and internal connections.
  • Improper assembly – plugging in without disconnecting the battery, forcibly inserting connectors or overlooking damaged pins are often the cause of defects.
  ]]>