Reducing resistor automatic transmission Toyota Corolla 120
The reduction resistor is part of the automatic transmission solenoids control circuit. Its purpose is to reduce the voltage on the solenoids to prevent them from burning out during prolonged operation.
Location of the reduction resistor in the Toyota Corolla 120 automatic transmission:
*Located on the automatic transmission control unit (TCU).
* Usually secured with a bolt.
Characteristics of the reduction resistor for the Toyota Corolla 120 automatic transmission:
* Resistance: 33 ohms
*Power: 25W
Malfunctions of the reduction resistor of the Toyota Corolla 120 automatic transmission:
* Resistor failure can lead to the following problems:
* Damage to the automatic transmission solenoids due to the supply of too high voltage to them.
* Automatic transmission fault codes associated with faulty solenoids.
* Problems with gear shifting.
Diagnostics of malfunctions of the reduction resistor of the Toyota Corolla 120 automatic transmission:
* Measuring the resistance of a resistor using a multimeter.
* Visually inspect the resistor for signs of overheating or damage.
* Check other components of the automatic transmission solenoid control circuit, such as the TCU and solenoids.
Replacing a reduction resistor in a Toyota Corolla 120 automatic transmission:
* Disconnect the battery.
* Remove the automatic transmission control unit (TCU).
* Disconnect the pull-down resistor from the TCU.
* Install a new pull-down resistor.
* Reassemble everything in the reverse order of removal.
* Clear automatic transmission fault codes.