What is a Toyota Innova AN140 airbag control unit?
The Toyota Innova AN140 airbag control unit is the central safety unit that precisely activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the correct functioning of the entire airbag system for maximum occupant safety.
This module, also known as the SRS Airbag Control Module, receives signals from the vehicle sensors and decides whether the restraint systems need to be activated.
It contains non-volatile memory that stores relevant data after a crash.
A professional **Toyota Innova AN140 airbag control unit repair** can reset the module after an accident to avoid a costly replacement.
Why is the Toyota Innova AN140 airbag control unit defective?
A Toyota Innova AN140 airbag control unit typically fails because it permanently stores important crash data after an accident, preventing re-deployment and activating the SRS warning light. Internal software errors, power supply issues, or short circuits within the module can also impair its function, making professional repair essential.
After a crash, the control unit is often locked and must be reset, otherwise it can no longer trigger airbags.
Other causes of failure include internal memory errors or power supply problems that lead to malfunction.
A defective module impairs safety and must be repaired immediately as part of a **Toyota Innova AN140 airbag control unit repair**.
Common error codes for Toyota Innova AN140 airbag control unit repair
The **Toyota Innova AN140 airbag control module repair** diagnoses specific error codes that indicate problems directly within the control module. These codes, typically B-codes, signal internal failures, communication problems, or power supply issues with the SRS module and often require a professional reset or repair.
- B1000 → Control unit communication error → The module cannot communicate with other systems or diagnostic devices.
- B1600 → Control unit internal errors → There is a problem in the internal circuit or processor of the airbag module.
- B1610 → Memory (EEPROM) Error → Damage or corruption has occurred in the control unit's non-volatile memory.
- B1700 → Airbag control unit power supply faulty → Insufficient or interrupted power supply to the airbag ECU.
- B1801 → Airbag circuit open circuit → An open circuit in the wiring or in the airbag module was detected by the control module.
- B1803 → Airbag circuit short circuit → A short circuit in the wiring or the airbag system is reported by the control module.
- B1820 → Airbag control unit self-test failed → The ECU could not successfully complete its internal functional test.
What part numbers are available for the Toyota Innova AN140 airbag control unit repair?
For the **Toyota Innova AN140 airbag control module repair**, two original OEM part numbers are primarily relevant: 89170-0K140 and 89170-08140. These numbers are specifically validated for the control unit (SRS Airbag Control Module) of the Innova AN140 and ensure correct compatibility to ensure safe operation.
Part number **89170-0K140** is a genuine Toyota OEM part number commonly used for this vehicle type.
Likewise, the number **89170-08140** is a verified Toyota OEM part number for the airbag control unit of the Innova AN140.
It is crucial to focus on these specific OEM part numbers to avoid confusion with sensors (such as 89170-47560 or 89170-04341) that are not control units.
There are currently no confirmed, directly replaceable OEM supplier part numbers from manufacturers such as Bosch or Autoliv for this specific module.
Repairing or resetting an existing module under these numbers is a cost-effective alternative to purchasing a new one and is offered by specialized service providers.