What is a Nissan Terrano R20 airbag control unit?
The Nissan Terrano R20 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle, making it essential for your safety.
As the heart of the Supplemental Restraint System (SRS), it processes signals from crash sensors in milliseconds. When a collision is detected, the control unit precisely deploys the airbags and seatbelt pretensioners.
Why is the Nissan Terrano R20 airbag control unit defective?
The Nissan Terrano R20 airbag control unit often fails because crash data is stored after an accident, requiring a reset, or due to age-related internal electronic errors. Moisture or overvoltage can also cause failures that impair the function of the entire airbag system and necessitate repair.
Typical signs of a faulty control unit include a persistent airbag warning light or specific error codes. A professional diagnostics at a workshop is essential to determine the exact cause of the failure and repair or replace the control unit.
Common error codes for Nissan Terrano R20 airbag control unit repair
During Nissan Terrano R20 airbag control unit repairs, specific error codes may occur that directly indicate a malfunction within the control unit itself. These codes often signal internal problems, communication failures, or stored crash data that could compromise the system's safety and require immediate diagnosis.
- B1015: Airbag system faulty → Control unit defective → Internal malfunction of the airbag ECU.
- B1049: Driver airbag - open circuit → control unit internal → problems in the ignition circuit detected by the control unit.
- B1059: Airbag control unit malfunction → Control unit internal → General ECU malfunction.
- B1134: Front left side airbag ignition circuit, open circuit → Internal control unit → The airbag ECU detects a fault in the circuit.
- B1139: Error within the SRS module → Control module internal → Airbag control module serious internal error.
- B1193: Airbag module related error → Control unit internal → The control unit reports a reference error to the module.
- B1206: Airbag RCM (Restraint Control Module) Error → Control unit internal → Malfunction of the Restraint Control Module, identical to Airbag ECU.
- B1342: SRS (Supplemental Restraint System) error → Control unit internal → General error of the entire system originating from the control unit.
- B1620: SRS Error (General) → Control Unit Internal → A general error in the SRS detected by the control unit.
- B1649: Crash Detected → Crash data stored in the control unit → The control unit has registered an impact and stored the data.
Which part numbers are relevant for the Nissan Terrano R20 airbag control unit repair?
For Nissan Terrano R20 airbag control unit repairs, various OEM part numbers exist from Nissan and suppliers like Bosch. These unique identifiers are crucial for identifying the correct control unit for your vehicle model and ensuring a successful repair or safe replacement of the airbag system.
- 285568F000: Nissan (OEM), Genuine - Widely used original part number.
- 285562X11C: Nissan (OEM), Genuine - Another specific Nissan OEM number.
- 988202X325: Nissan (OEM), Genuine - Confirmed Nissan OEM number for the airbag control module.
- 285562X100: Nissan (OEM), Original - Also a valid Nissan OEM number.
- 0285001480: Bosch, OEM supplier - Bosch is a major supplier of airbag control units.
- 0285001109: Bosch, OEM supplier - Another relevant Bosch part number.
- 28556-8F000: Nissan (OEM), original variant of the OEM number, often listed in reset databases.
Compatibility and years of manufacture for the Nissan Terrano R20 airbag control unit
The airbag control unit is specifically designed for the Nissan Terrano II (internal designation R20), with compatibility primarily covering models from approximately 1999 to 2004. It is primarily suitable for diesel versions such as the 2.7 TDi and 3.0 DiT, especially with the TD27H engine, which is crucial for a targeted Nissan Terrano R20 airbag control unit repair.
These control units are compatible with various engines and transmission variants. When repairing or replacing, always ensure that the part number exactly matches your vehicle model.
Function and significance of the Nissan Terrano R20 airbag control unit
The Nissan Terrano R20 airbag control unit is the central control unit of the passive safety system and of paramount importance for occupant protection. It continuously monitors all relevant sensors and is responsible for the life-saving deployment of the airbags and seatbelt pretensioners in the event of an accident, making a defective system a safety risk.
The system features a self-diagnosis function that continuously checks for operational readiness and activates the airbag warning light if any errors are detected. Targeted diagnostics help detect defects early, allowing the control unit to be repaired and full safety restored.
Installation and safety instructions for Nissan Terrano R20 airbag control unit repair
The Nissan Terrano R20 airbag control unit is typically located in the center console or under the dashboard, providing easy access for diagnosis or repair. Due to its safety-critical function, installation, removal, and repair of the Nissan Terrano R20 airbag control unit require the utmost care and should always be performed by qualified technicians in a specialized workshop.
The connectors are multi-pin and often marked yellow to avoid confusion. Improper handling can lead to misfires or system deactivation, seriously compromising vehicle safety. To avoid unnecessary risks, never allow your defective airbag control unit to be repaired by untrained personnel.