Electronic Controlled Automatic Transmission System: Initialization

RESET MEMORY
NOTE:
- Perform the RESET MEMORY (ATT initialization) when replacing the automatic transmission assembly, engine assembly or ECM.
- The RESET MEMORY can be performed only with the Techstream.
  
  Fig 1: Moving Shift Lever To Each Position
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
HINT:

The ECM memorizes the vehicle conditions when the ECT controls the automatic transmission assembly and engine assembly. Therefore, when the automatic transmission assembly, engine assembly, or ECM has been replaced, it is necessary to reset the memory so that the ECM can memorize the new information.

Reset procedure is as follows.
1. Turn the engine switch off.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG) and push the Techstream main switch on.
4. Select the item "Powertrain / Engine and ECT / Utility / Reset Memory. Then, press "Next"".
5. Perform the reset memory procedure from the main menu.
  CAUTION: After performing the RESET MEMORY, be sure to perform the ROAD TEST (see ROAD TEST ) described earlier.
  
  HINT:
  
  The ECM learns through the ROAD TEST.