What is a Honda HR-V airbag control unit?
A Honda HR-V airbag control unit is the heart of the occupant protection system, continuously monitoring sensor data. In the event of an accident, it precisely deploys airbags and seatbelt pretensioners to protect occupants. It also stores important crash information and ensures the operational readiness of the entire SRS system through self-diagnosis.
This central electronic control unit, also known as the SRS Control Module, processes signals from various impact sensors in the vehicle. It is responsible for activating the safety systems within milliseconds in an emergency. Continuous monitoring of all components is of utmost importance.
The module also integrates data from seat occupancy sensors and belt pretensioners to ensure on-demand activation. It features comprehensive diagnostic functionality to detect system problems. Faults are often signaled by an indicator light in the instrument cluster.
Why is the Honda HR-V ZZ airbag control unit defective?
A Honda HR-V airbag control unit can fail due to internal memory errors, hardware malfunctions, or power supply issues, often after an accident or due to age-related wear and tear. The control unit often stores crash data after a collision, requiring immediate Honda HR-V ZZ airbag control unit repair.
Common causes of failure are internal electronic defects, indicated by error codes such as B1001 or B1100. An irregular power supply, identified by code B1010, can also damage the control unit. Such problems impair the functionality of the entire safety system.
Another common problem is the storage of crash data (hardcode B1200) after an accident. This causes the airbag warning light to remain permanently illuminated, necessitating immediate Honda HR-V ZZ airbag control unit repair. Only a professional reset can restore the module to working order.
Common error codes for Honda HR-V ZZ airbag control unit repair
During Honda HR-V ZZ airbag control unit repairs, specific B-codes are often identified, indicating internal problems or crash data. These error codes directly signal defects in the control unit and require a precise diagnosis to ensure successful repair.
- B1000 → Control unit communication error → Cause: Communication problem with other vehicle systems or diagnostic devices.
- B1001 → Internal memory error in the control unit → Cause: Damage to the internal memory of the airbag ECU.
- B1002 → Airbag ECU self-test failed → Cause: The control unit detects an internal error during the system check.
- B1010 → Voltage supply to airbag control unit irregular or interrupted → Cause: Problems with the electrical supply to the control unit.
- B1020 → EEPROM memory error in the airbag control unit → Cause: Defect in the non-volatile memory of the control unit.
- B1100 → Hardware error – internal processing malfunction → Cause: Serious internal damage to the airbag ECU.
- B1200 → Crash data saved (hardcode) → Cause: Collision triggered the deployment of the airbags and permanently saved data.
What part numbers are available for the Honda HR-V ZZ airbag control unit repair?
There are specific OEM part numbers for the Honda HR-V ZZ airbag control unit repair, which vary depending on the model year. It is crucial to identify the exact part number of the original module, as only a compatible control unit will function correctly and ensure safety.
The following Honda OEM part numbers are verified for Honda HR-V airbag control units and are relevant for a successful repair or replacement:
-
For first generation Honda HR-V models (1999–2006):
- 38600-S50-003
- E17020138
- 77960-S2H-G01
- 77960-S2HG010M1
-
For newer Honda HR-V models (2016–2024):
- 77960-T7S
- 77960-T7SA212M2
- 77960-T7SX410M2
Comparing the existing part number with these lists is essential to ensure compatibility and to correctly resolve the failure.