What is a Peugeot 307 SW I airbag control unit?
A Peugeot 307 SW I airbag control unit is the central safety unit that precisely activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all passive safety components in your vehicle.
This essential module is responsible for the continuous monitoring of the airbag system and uses sensors to detect the severity and type of impact.
Its primary function is to ensure the immediate and correct deployment of the airbags to provide optimal protection for the occupants. It also stores important information about the accident for later diagnosis.
Why is the Peugeot 307 SW I airbag control unit defective?
A Peugeot 307 SW I airbag control unit is often defective because indelible crash data was stored after an accident, or due to internal hardware and software errors. This causes the airbag warning light to remain permanently illuminated and the system to no longer function properly.
Because crash data from an impact is stored in the control unit, the system cannot deactivate the airbag warning light and requires professional repair or replacement. Error code B1100, in particular, indicates such non-erasable data.
Internal memory errors such as B1002 or B1102, as well as general control unit defects (B1101), are other common causes. These errors impair the system's ability to process sensor data or deploy the airbags.
Communication problems (B1000, B1200) or an insufficient power supply (B1001) can also cause your Peugeot 307 SW I airbag control unit to be reported as defective. A comprehensive diagnosis is crucial here.
Common error codes for Peugeot 307 SW I airbag control unit repair
During a Peugeot 307 SW I airbag control unit repair, specific error codes typically occur that indicate direct problems with the control unit itself. These codes often indicate internal defects, communication issues, or stored crash data that require professional repair.
- B1000 → Control unit communication error → Airbag-ECU communication interruption.
- B1001 → Airbag control unit power supply missing → Insufficient or missing power supply to the control unit.
- B1002 → Airbag control unit memory error → Damage or malfunction of the internal memory.
- B1003 → Internal memory error / data loss → Critical data loss within the control unit software.
- B1100 → Crash data stored, not erasable → Permanent storage of collision data after an accident.
- B1101 → Control unit defective, error in the internal system → General malfunction of the internal hardware.
- B1102 → EEPROM malfunction in the control unit → defect in the non-volatile memory (EEPROM).
- B1103 → Unexpected open or short circuit in the control module → Unusual electrical problems within the module.
- B1200 → Communication error with other control units → Data transmission failure to connected systems.
What part numbers are available for the Peugeot 307 SW I airbag control unit repair?
There are several exact OEM part numbers for the Peugeot 307 SW I airbag control unit repair, which can vary depending on the year of manufacture, engine type, and trim level. These numbers are crucial for identifying the correct replacement or repair part for your vehicle.
- 6545HE (including variants 6545HF, 6545HJ) – Genuine OEM Peugeot airbag control unit.
- 9654491180 – Specific OEM number for the SW version S2 with 9HZ diesel engine.
- 9650109480 – Another genuine Peugeot part number for the airbag control unit of the 307 SW.
- 9652712380 – Confirmed genuine part number for Peugeot 307 airbag control units.
- 9652712180 – Genuine Peugeot airbag control unit for models built between 2001 and 2005.
When repairing a Peugeot 307 SW I airbag control unit, it is essential to verify the exact part number of your defective module. This is the only way to ensure compatibility and full functionality of the new or repaired control unit.
Manufacturers like Siemens and Peugeot produce these control units, often under different internal designations. The listed Peugeot original numbers are crucial for correct selection and repair.