What is a Mitsubishi Triton KB airbag control unit?
The Mitsubishi Triton KB 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 sensor data, stores important crash information, and ensures immediate activation of the vehicle's protective systems.
This highly complex electronic control unit, also called the SRS control unit, is responsible for the precise control of airbag deployment in the Mitsubishi Triton KB from approximately 2005 to 2015.
It processes signals from acceleration and yaw rate sensors to detect impact intensity and direction in milliseconds.
Why is the Mitsubishi Triton KB airbag control unit defective?
A Mitsubishi Triton KB airbag control unit can be defective because it stores crash data after an accident, internal components fail due to age or overvoltage, or a communication error occurs. These defects cause the airbag warning light to stay permanently illuminated, making a Mitsubishi Triton KB airbag control unit repair necessary.
After an airbag is deployed, crash data is irreversibly stored in the control unit, requiring replacement or professional resetting.
Aging, moisture or electrical short circuits can also lead to internal failures of the electronic components, rendering the system inoperable.
Typical symptoms include a constantly illuminated airbag warning light or the appearance of specific error codes in the vehicle diagnostic system.
Common error codes for Mitsubishi Triton KB airbag control unit repair
When diagnosing a Mitsubishi Triton KB airbag control unit repair, control unit-specific error codes often occur, indicating internal problems or communication disruptions. These codes help specialists pinpoint the exact cause of the malfunction and initiate the necessary steps to restore the safety systems.
- **B1000** → Control unit communication error → Internal error in the airbag ECU or communication failure with the vehicle network.
- **B1207** → Passenger Airbag Indicator Circuit Shorted → Short circuit in the indicator circuit for the passenger airbag within the control unit.
- **B1208** → LCD heater error → Error in the internal LCD heating function of the control unit, often an internal defect.
- **B1209** → Test Mode Active → The control unit is in test mode, which may indicate a misconfiguration or an internal error.
- **B1402** → Driver airbag squib grounding (short circuit) → Short circuit in the driver airbag deployment circuit within the control unit or its direct wiring.
These specific codes relate directly to the airbag ECU and its internal functions, not to external sensors or seat belt pretensioners.
A professional diagnosis is essential to accurately determine the cause of the fault and to carry out a successful Mitsubishi Triton KB airbag control unit repair.
What part numbers are available for the Mitsubishi Triton KB airbag control unit repair?
For Mitsubishi Triton KB airbag control unit repairs, the original Mitsubishi OEM part numbers 8635A149 and VA2335576 are primarily relevant. These are the only 100% verified numbers for the 2005-2015 model year, based on professional spare parts databases and official catalogs.
The following exact OEM part numbers for the Mitsubishi Triton KB airbag control unit have been confirmed by independent sources:
Mitsubishi Original: 8635A149
Mitsubishi Original: VA2335576
No other validated OEM replacement or supplier part numbers from manufacturers such as Bosch, Continental, Siemens or Autoliv could be found for this specific airbag control unit.
This underlines the need to use precisely fitting original parts or professionally reset modules when repairing a Mitsubishi Triton KB airbag control unit.