Automatic transmission control unit (TCU) Toyota Camry XV30
Location:
* Under the hood, near the right wing of the car
* Near the fuse and relay box
Part Number:
* 35420-33010
* 35420-33130 (for some models)
Functions:
* Automatic transmission solenoid valve control
* Monitoring of engine and vehicle parameters
* Gear shifting and engine speed control
* Automatic transmission protection from overheating and overload
*Storing fault codes
Possible problems and symptoms:
* Problems with gear shifting
* Jerks and vibrations when switching
* Switch to emergency mode
* Check Engine light comes on
Possible causes of the malfunction:
* Electrical problems (such as broken wires)
* Solenoid failure
*Low ATF level
* Mechanical problems in automatic transmission
Diagnostics and repair:
* Reading fault codes using a scanner
* Checking ATF fluid level and condition
* Visual inspection of wiring and connectors
* Checking solenoids and other electrical components
* If necessary, repair or replace the automatic transmission control unit
Note:
* Replacement of the automatic transmission control unit must be performed by a qualified mechanic.
* After replacing the unit, it is necessary to adapt the automatic transmission so that it works correctly with the new unit.