- ECU Software updates. Toyota Motor Co. Only issues software updates (Calibration or CAL files) for engine management and other electronic control units (ECU) only when there are specific issues or problems to be resolved. All updates are vehicle, model and model code specific.
- Do you have a Toyota Owners account? Joining makes being an owner easy. You'll find resources like manuals and how-to videos, your current service history and an engaging community experience. If you aren't already a member, join now.
Nov 18, 2019 Toyota products with OBD will continue to store a DTC in the ECM long term memory until the code is cleared by removing power from the ECM BATT terminal. In most cases, the EFI fuse powers this keep alive memory. Hybrid Vehicle Control Electronic Control Unit. (HV) control Electronic Control Unit (ECU).
This article introduce the procedures of Techstream TIS ECU Flash Reprogramming.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 (TIS) 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 information.
.cuw - Toyota Calibration Update Wizard Data. The CUW data files are related to Toyota alibration Update Wizard.CUW file is a Toyota Calibration Update Wizard Data. The Calibration Update Wizard (CUW) is an application on TIS which downloads calibration files from TIS to the Diagnostic Tester Program Card.
PS:ECU 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:
- There are currently 1 file extension (s) associated to the Toyota alibration Update Wizard application in our database.cuw. Toyota Calibration Update Wizard Data. Software updates are important to your digital safety and cyber security. Unfortunately, simply installing antivirus software isn't enough to protect you and your devices.
- 1999-05-Toyota-Echo-4 Cylinders T 1.5L MFI DOHC-32932601. Toyota - Echo - Workshop Manual - 2000 - 2008.
- Toyota calibration files are of interest because they can be easily obtained for example from Toyota's Technical Information System (TIS) and used for study. A calibration file contains all of the maps that are used for tuning the ECU. The calibration file is a good way to get hold of the original maps without opening the ECU.
- Pay the Toyota dealer diagnostic fee ($90-$150) to determine if your car needs this. If the Toyota dealers screws-up the flashing, they are on the hook for the subsequent repairs. The diagnostic fee would get applied to the total repair bill, should you choose to have the dealer perform the service.
1.Powertrain Control Module (PCM)
2.Engine Control Module (ECM)
3.Transmission Control Module (TCM)
4.Or any other Toyota specific control unit
What vehicle models this guide applicability:
Toyota Calibration Files 2017
Year from:2001-2013
Vehicle models:4Runner, Avalon, Camry, Camry HV, Celica, Corolla, Echo, FJ Cruiser, Highlander, Highlander HV, Land Cruiser, MR2 Spyder, Matrix, Prius, Prius C, Prius PHV, Prius V, RAV4, Sequoia, Sienna, Solara, Tacoma, Tundra, Venza, Yaris
Techstream ECU flash reprogramming is a 4-step process:
1.Verify the vehicle’s applicability for recalib ration and locate desired calibration file by performing the Techstream Health Check function.
NOTE
Techstream will automatically search TIS for the appropriate Service Bulletin using the current Calibration ID from the vehicle.Calibration file links can be found embedded in the corresponding Service Bulletin.
2.Connect the GR8 Battery Diagnostic Stationusing “PowerSupplyMode”only. The GR8 Battery Diagnostic Station includes a Power Supply Mode to help maintain battery
voltage at 13.5 volts during ECU reprogramming.
NOTICE
ECU damage may occur if the correct battery charger mode setting is NOT used.
3.Locate appropriate calibration ID and reprogram the vehicle ECU withTechstream. Techstream uses the Calibration Update Wizard(CUW) application to open calibration files and facilitate the ECU flash reprogramming process.
4.Attach the Authorized Vehicle Modification Label.
Modifications to ECU calibrations MUST be recorded and properly displayed on the vehicle using the Authorized Modification Label
Techstream ECU Flashing Preparation:
Selecting the TIS Techstream VIM or the Mongoose MFC VIM.
Techstream software requiresa VIM selection before you can use the Mongoose MFC VIM.
If using TIS Techstream,no changes are needed.
Perform the following:
1.Select Setup from the Techstream Main Menu screen.
2.Select VIM Select from the Set up drop down menu
3.Select the correct Interface Set up from the drop down list.
If using Techstream Lite,select Mongoose MFC
NOTE
Mongoose MFC Software and Driver MUST be installed before Mongoose MFC selection will be available.
See TIS–Diagnostics–Scan tool page for additional information
Select Mongoose MFC to Use Techstream Lite
If using TIS Techstream,select TIS Techstream VIM (this is the default)
Select TIS Techstream VIM (default )to Use TIS Techstream
4.Click OK
Toyota Techstream TIS Reprogramming ECU Flash Procedures:
1 Verify the vehicle’s applicability for recalibration and locate desired calibration file.
A Connect Techstream and establish a vehicle connection.
B Click the Health Check button on the System Select tab
C Choose desired ECU group(s) in the Health Check dialog box
D Click Next.
E Click Continue to view Health Check result
F Available calibration updates are indicated by a Yes link in the Cal.Update? column.
Click the Yes link to acces sthe appropriate Service Bulletin onTIS
NOTE
Note:any DTCs stored in systems that will be flash reprogrammed.
Clicking the Yes link will automatically launch TIS and perform a calibration search
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G Login to TIS.(If already logged in,skip this step.)
H To review the Service Bulletin and access the calibration file,click the Service Bulletin link in
the Document Title column of the Calibration Search Result portlet.
NOTE:Only Toyota Certified Technicians and above may access calibration files
2 Connect the GR8 Battery Diagnostic Station.
A Connect the GR8 Battery Diagnostic Station to the vehicle and turn it ON.
B Select Power Supply Modeby following the screen flow below
NOTICE
ECU damage may occur if the correct battery charger and mode setting are NOT used.
Power Supply Mode is used to maintain battery voltage at 13.5 volts while flash
reprogramming the vehicle.
For details on how to use the GR8 Battery Diagnostic Station,refer to the GR8
Instruction Manual located on TIS, Diagnostics–Tools & Equipment–Battery
Diagnostics.
Confirm Power Supply ModeIs Selecte
3.Click the appropriate calibration ID and reprogram the vehicle’s ECU with Techstream.
A After reviewing the procedures outlined in the selected Service Bulletin,click the appropriate calibration ID link by matching the vehicle’s current calibration ID to the Previous Calibration ID in the Calibration Identification Chart
NOTE
Calibration files are embedded as live links in the Service Bulletin.
Some vehicles require special preparation—please review the selected Service Bulletin carefully
B Click Open to load calibration file information.
NOTE
Techstream pulls calibration files as needed to ensure the latest calibration file is used.
Do NOT save calibrations locally on the hard drive or other media.
NOTICE
Errors during the flash reprogramming process scan permanently damage the vehicle ECU.
Minimize the risk by following the steps below.
1.Battery voltage MUST NOT FALL BELOW 11.4 volts during reprogramming.Confirm battery voltage is higher than 11.4 volts,but be sure voltage DOES NOT RISE ABOVE 16.0 volts duringreprogramming.
2.Turn OFF all vehicle accessories(e.g.audio system,A/C,interior lights,DRL,etc.).Do NOT add to or significantly change thev ehicle’s electrical load while reprogramming.
3.Confirm the hood is open and ensure under hood temperature does NOT exceed158◦F(70◦C).
4.Confirm cable connections between the vehicle and Techstream are secure.
5.Do NOT disconnect or turn off Techstream or vehicle ignition during reprogramming.
6.Set parking brake.
7.Complete ALL flash calibration updates provided for each ECU.
8.If the battery’s state of charge or capacity are in question,test with SST.No. 00002-V8150-KIT “Digital Battery Analyzer,”and follow Service Bulletin No. PG001-06,“Battery Maintenance for In-Stock Vehicles & Pre-Delivery”,or the appropriate “Maintenance for HV & Auxiliary Batteries ”Service Bulletin.
9.The GR8Battery Diagnostic Station MUST be used in Power Supply Mode to maintain battery voltage at 13.5 volts while flash reprogramming the vehicle.For details on how to use the GR8 Battery Diagnostic Station,refer to the GR8 Instruction Manual located on TIS, Diagnostics–Tools & Equipment–Battery Diagnostics
C Click Next to start the calibration update process
D When using TIS Techstream,select Techstream VIM as the desired programming device.
Then click Next
When using Techstream Lite,select Generic J2534 Interface.Then click Next
E Confirm the following:
•PC is connected to VIM.
•VIM is connected to DLC3 connector.
•Ignition is ON and engine is OF For “READY” OFF(hybrid vehicles).
Then click Next
F Verify correct current calibration and new calibration information.Thenc lick Next
NOTE
•The total number of calibration IDs in the calibration file corresponds to the number of
reprogrammable processors in the ECU.
•Each calibration file may contain up to three separate calibrations.
•Below figure shows an example of the update procedure for a two-processor ECU
G Turn ignition OFF .Then click Next
H Confirm the following:
•Ignition is ON and engine is OFF or “READY” OFF (hybrid vehicles).
•Hood is open.
•All accessories are OFF .
•Battery voltage is above 11.4 volts.
NOTICE
Verify the vehicle is connected to a battery charger before continuing—If battery voltage falls below 11.4 volts,ECU damage may occur.
Then click Start
NOTE
If key cycle is NOT done properly,reprogramming will stop at 10% and Cal1will fail to load
I Do NOT disturb the vehicle during flash reprogramming
NOTE
•ECU flash reprogramming may take anywhere from 3–30 minutes per calibration file.
•Reprogramming time will vary depending on model and ECU communication protocol.
Vehicles using CAN communication protocol will reprogram much faster (2–7minutes)
NOTE
•If vehicle requires only ONE calibration update,then proceed to step Ninthisbulletin.
•If vehicle requires a SECOND calibration update,then continue as follows:
•For serial communication vehicles,go to step J.
•For CAN communication vehicles,goto step L
Toyota Calibration Files Download
J When Cal 1 has completed the update process,turn ignition OFF for a minimum of
10 seconds.Then click Next
K Turn ignition to the ON position.Then click Start
NOTE
If key cycle is NOT done properly,reprogramming will stop at 10% and Cal 2 will fail to load
Toyota Ecu Repair
L Do NOT disturb the vehicle during flash reprogramming
M Turn ignition OFF for a minimum of 10 seconds.Then click Next
N Turn ignition to the ON position.Then click Next
Ecu Programmer Software Download
O Confirm all calibrations were updated as specified in the Service Bulletin.Then click Finish
Toyota Ecu Coding Software Download
NOTE
On some models,DTCs may set as a result of reprogramming.If DTCs are present,clear codes and run the Health Check again.Troubleshoot any remaining Current,Pending,or
History codes.Permanent codes will not be cleared using Techstream.Permanent codes do not illuminate the MIL and do not require troubleshooting.They will clear during normal
driving once the Universal Trip Drive Pattern is performed.
4 Attach the Authorized Modifications Label.
A Using a permanent marker or ballpointpen,complete the Authorized Modifications Label
and attach to the vehicle.The Authorized Modifications Lablis available through the MDC,
P/N00451-00001-LBL
B Attach the label under the hood in the location determined by the specific Service Bulletin or Campaign
NOTE
Wait 60–90 seconds for ink to set before handling
FromAuto Repair Technician Home, postHow to use Toyota Techstream TIS Reprogramming ECU Flash
Matched product:
Mangoose VCI V14.10.028 Single Cable for TO-YOTA for DLC3 OBD2 from 1996-present
- Item No. SV46-C
- Out Of Stock
Equipments:
TIS professional level subscription
Toyota TIS Techstream software V4.21.002 or later
(Hardware: 16 pin mini MINI VCI, 22 pin MINI VCI and Mangoose VCI)
Browse to https://techinfo.toyota.com
1) First time user need to create a new account. Click on the 'Subscribe' button and simply follow the next screens to create an account and subscribe to your first TIS subscription.
2) Login subscriber. Access your TIS account, sign-on using the 'Subscriber Login' section.
Login into TIS official website https://techinfo.toyota.com with User name and password
Select TIS option form the homepage
Select Diagnostics icon on the TIS menu
There are twp options under Diagnostics: Scantool and Calibration. Select Calibration
Enter vehicle make, model and year etc information to search the calibration available
Then the system will display the calibration search result. Select the appropriate calibration according to your vehicle’s condition and current ECU calibrations
NOTE: Make sure follow all steps indicated in the Service Bulletin for ECU programming instructions, otherwise will cause damage to vehicle.
Check the detail Calibration information and select NEW CALIBRATION ID
Select Open to download the file
Calibration Update Wizard is loaded. Follow the screen prompts to operate.
3) If you already have an account. Just follow the applicable prompts:
1. 'Update My Personal Information'
2. 'Change My Password'
3. 'Extend My Subscription'
4. 'View My Account History'