What is a Honda Prelude BB airbag control unit?
The Honda Prelude BB airbag control unit is the central safety unit in your vehicle that specifically activates occupant restraint systems such as airbags and seatbelt pretensioners in the event of an accident or collision. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of all airbag modules for occupant safety.
This specialized electronic module is designed for the Honda Prelude V (BB series) and is compatible with engine codes such as H22A5, typically for models from 1996 to 2001/2002.
Its main function is to process the signals received from the crash sensors and precisely trigger the pyrotechnic systems when necessary. It is therefore crucial for the passive safety of the Honda Prelude BB.
Why is the Honda Prelude BB airbag control unit defective?
A Honda Prelude BB airbag control unit can fail for a variety of reasons, often due to internal electronic errors caused by overvoltage or aging, or after an accident, as it irreversibly stores crash data. A failure often requires a professional Honda Prelude BB airbag control unit repair to restore safety functions.
Internal software issues or inconsistencies in model or serial ID codes often lead to unit failure. These types of errors can activate the airbag warning light and impair system functionality.
After an accident, the control unit is usually locked to prevent accidental deployment. A repair or reset service is then necessary to restore it to working order and clear error messages, a classic case for a Honda Prelude BB airbag control unit repair.
Common error codes for Honda Prelude BB airbag control unit repair
When diagnosing a faulty Honda Prelude BB airbag control unit, repair shops encounter specific error codes that indicate internal problems or communication failures. These codes are crucial for troubleshooting and indicate that a professional Honda Prelude BB airbag control unit repair is required.
- Code: 87-31 → Meaning: Internal error in the airbag control unit (SRS unit) → Cause: Electronic defect in the control unit.
- Code: 91-1x → Meaning: Internal error in the airbag control unit → Cause: General internal fault of the module.
- Code: 87-32 → Meaning: Side Impact Air Bag Cutoff Indicator remains on / does not work correctly → Cause: Control unit defect regarding the indicator system.
- Code: 91-2x → Meaning: Short circuit in the SRS indicator circuit → Cause: Problem in the warning light circuit, triggered by the control unit.
- Code: 1-1 / 1-2 → Meaning: Open circuit or high resistance in the driver airbag circuit → Cause: Control unit-specific monitoring of the airbag circuits.
- Code: 85-63 → Meaning: Model ID code or variation code inconsistent → Cause: Software or memory problems in the control unit.
- Code: 85-64 → Meaning: ECU serial ID code inconsistent → Cause: Inconsistency of the internal serial number of the control unit.
What part numbers are available for the Honda Prelude BB airbag control unit repair?
Identifying the correct part number is essential for a successful Honda Prelude BB airbag control unit repair, with 77960-S30-G81 being the primary and most reliable OEM number for this specific airbag control unit. An exact match ensures the compatibility and functionality of the replacement or repaired part.
- Part number: 77960-S30-G81 → Manufacturer: Honda → Type: Original airbag control unit (SRS unit) for Honda Prelude V (BB series). This number is the authoritative, airbag-specific original number.
- Part number: 38850-S30-GO → Manufacturer: Honda → Type: Original (Note: not always unique to SRS). This number can vary depending on the source and is not always clearly assigned to the airbag control unit.
There are no verifiable supplier part numbers (such as Bosch, Continental, Siemens, or Autoliv) available for the Honda Prelude BB airbag control unit. Alternative OEM numbers for this function and series are also not officially documented.
Choosing the correct part number is crucial to avoid unnecessary costs and further sources of error, which underscores the importance of providing precise information in every Honda Prelude BB airbag control unit repair.