ECU (electronic control unit) Toyota Corolla 150 automatic transmission
The ECU is the brain center of the car, and the following control units are used for the Toyota Corolla 150 with automatic transmission:
1. Engine computer (ECM)
* Controls engine operation including ignition, fuel injection, camshaft timing and exhaust gas recirculation (EGR) valve timing.
* Model: 89661-02Y50
2. Transmission ECU (TCM)
* Controls automatic transmission operation, including gear shifting, torque converter lock-up and Sport mode.
* Model: 33050-02B70
3. Airbag ECU (SRS)
* Controls the deployment of airbags in the event of an accident.
* Model: 89170-02030
4. Body Control Module (BCM)
* Controls comfort and convenience functions such as lighting, power windows and central locking.
* Model: 84410-02040
5. Air conditioning control unit (ACM)
* Controls the air conditioning system including compressor, condenser and evaporator.
* Model: 88650-02020
6. Anti-theft ECU (Immobiliser)
* Prevents the engine from starting without the correct key.
* Model: 89787-02110
These ECUs communicate with each other via CAN bus (controller area network) to exchange data and coordinate vehicle functions.