xB L4-1.5L (1NZ-FE) (2004)
Engine Control Module: Technical Service Bulletins
Engine Controls - Techstream(R) ECU Re-Flash Procedure
February 4, 2010
Techstream ECU Flash Reprogramming Procedure
TSB SUPERSESSION NOTICE
The information contained in this TSB supersedes TSB No. SS003-07.
Applicability has been updated to include 2009 - 2011 model year Scion vehicles.
A new section, Techstream Preparation, has been added.
Techstream Lite has been added as an option in Required Tools & Materials.
Process Overview and Operation Procedure sections have been updated.
TSB No. SS003-07 is Obsolete and any printed versions should be discarded. Be sure to review the entire content of this service bulletin before
Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are
released as field-fix procedures described in individual service bulletins. This bulletin details the Techstream ECU flash reprogramming process and
outlines use of the Technical Information System (TI S) and the Calibration Update Wizard (CUW). Flash calibration updates can only be applied to the
vehicle/ECU combination for which they are intended. ECUs have internal security that will not allow them to be programmed with another ECU's
Electronic Control Unit (ECU) is a Toyota term used to describe integrated computerized devices responsible for managing the operation of a system or
subsystem. For the purposes of this bulletin, the term "ECU" is used as a generic label for the following SAE J1930 standard references:
Powertrain Control Module (PCM)
Engine Control Module (ECM)
Transmission Control Module (TCM)
Or any other Toyota specific control unit