What is a Honda Civic EJ airbag control unit?
The Honda Civic EJ airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of the entire airbag system to ensure the safety of vehicle occupants.
This module is designed for the 6th generation of the Honda Civic (EJ series, approximately 1995-2000). It processes signals from various impact and seat belt sensors.
The control unit's rapid response within milliseconds is crucial for optimal protection in collisions. It also serves as an interface for vehicle diagnostic systems.
Why is the Honda Civic EJ airbag control unit defective?
The Honda Civic EJ airbag control unit can be defective due to age-related failure of internal electronic components, the permanent storage of crash data after an accident, or voltage spikes that have damaged the circuit board. These defects often lead to error messages and the illumination of the airbag warning light in the dashboard.
A common cause of a defect is the storage of crash data after airbag deployment. This data must be professionally erased to restore the module's functionality.
Faults can also be caused by short circuits in the connected circuits or by broken wiring. A correct diagnosis is essential to pinpoint the cause and successfully repair the Honda Civic EJ airbag control unit.
Common error codes for Honda Civic EJ airbag control unit repair
During Honda Civic EJ airbag control module repairs, specific error codes may occur that indicate problems within the SRS module or its direct connections, including open circuits in the driver airbag module or internal control module errors. These codes enable a precise diagnosis of the defect and are crucial for troubleshooting.
- Code 1-1 : Open circuit or high resistance in the driver airbag module. This indicates wiring or module problems detected by the control module.
- Code 1-2 : Open circuit or high resistance in the driver airbag module. Similar to Code 1-1, it indicates a faulty connection or component monitored by the SRS control module.
- Code 87-31 : Internal SRS control module error. This code indicates a hardware or software defect in the airbag control module itself, requiring repair or replacement of the module.
- Code 91-1x : Internal SRS control module error. Indicates a malfunction within the module that affects the system's reliability and requires immediate attention.
- Code 91-2x : Short circuit in the SRS indicator circuit. This code indicates a short circuit that affects the function of the airbag warning light and indicates a system malfunction.
What part numbers are available for the Honda Civic EJ airbag control unit repair?
Several original Honda OEM part numbers are relevant for Honda Civic EJ airbag control unit repairs, ensuring exact compatibility with the 6th generation vehicle models (approximately 1995-2000). A precise match to the part number of your defective module is crucial for the correct replacement or successful repair.
Verified OEM part numbers for the Honda Civic EJ airbag control module include 77960-S04-G91-M2, 39790-S04-G01-1M1, and 77960-S5P-A12-1M1. These numbers guarantee that this is the correct module for your vehicle.
It's important to note that these numbers only identify genuine Honda parts and not generic replacement part numbers from suppliers such as Bosch or Continental. An exact match to the part number of your existing module is essential before repairing or replacing the Honda Civic EJ airbag control unit to avoid compatibility issues.