How do you replace transmission control unit in 93 prelude?

To replace the transmission control unit (TCU) in a 1993 Honda Prelude, first disconnect the negative battery terminal to ensure safety. Locate the TCU, which is typically found under the dashboard or near the driver's side kick panel. Remove the mounting screws and carefully disconnect the wiring harness from the TCU. Install the new TCU by reversing the removal process, ensuring all connections are secure before reconnecting the battery.