Electric Vehicle - EV ECU Flash Programming Procedure

T-SB-0043-13

March 18, 2013

RAV4 EV ECU Flash Reprogramming Procedure

Service Category
Engine/Hybrid System

Section
Hybrid/Battery Control System

Market
USA





Applicability

Introduction

Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for the RAV4 EV are released as field-fix procedures described in individual Service Bulletins. This bulletin details the ECU flash reprogramming process and outlines use of the Techstream Health Check Function and the Tesla Powertrain Service Diagnostics program.

NOTE

Flash reprogramming of the RAV4 EV ECU can only be performed with the Tesla Powertrain Service Diagnostics program.





Warranty Information





Parts Information





Required Tools & Equipment

Techstream Preparation

Selecting the Correct VIM.

Techstream software requires a VIM selection before it can be used for reprogramming.

Perform the following:

1. Select "Setup" from the Techstream Main Menu screen.





2. Select "VIM Select" from the Setup drop down menu.

3. Select the correct Interface Setup from the drop down list. For Techstream 2.0, select "MongoosePro MFC".

NOTE

Mongoose Driver MUST be installed before Mongoose selections will be available.

Refer to the Technical Information System (TIS), Diagnostics - Scantool page for additional information.

4. Click "OK".

Process Overview

Techstream ECU flash reprogramming is a 4-step process:

1. Verify the vehicle's applicability for recalibration 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 Station using "Power Supply Mode" 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. Perform the RAV4 EV ECU software update using the Tesla Powertrain Service Diagnostics program.

Launch the Tesla Powertrain Service Diagnostics program and initiate the update process to complete the reprogramming.

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.

Operation Procedure

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 results.





F. Available calibration updates are indicated by a link in the "Update" column. Click the link to access the appropriate Service Bulletin on TIS.

G. Log in 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.

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 Mode by following the screen flow.

3. Perform the RAV4 EV ECU software update using the Tesla Powertrain Service Diagnostics program.

After reviewing the procedures outlined in the selected Service Bulletin launch the Tesla Powertrain Service Diagnostics program.

NOTE

The vehicle may require special preparation - please review the selected Service Bulletin carefully.

A. Click "Start".

B. Click "All Programs".





C. Click "Tesla Powertrain Service Diagnostics RAV4".





NOTICE

D. Disconnect the Techstream DLC3 connector.





E. Connect the RAV4 EV Diagnostic Cable (DLC3 No.2 is located in the rear cargo area).





F. Confirm the communication light is green.

G. Click on the "Firmware Download" tab.





H. Click the "Play" button.





I. Verify the information displayed on the warning message before proceeding.





J. The ECU Software Update will begin and take approximately 10 - 20 minutes to complete.

K. Click "OK".

L. Disconnect the Tesla Powertrain Diagnostic Cable and close the program.

M. Connect the Techstream DLC3 cable to the OBDII connector under the dash.





N. Perform a Health Check to confirm the firmware was installed correctly and to check for DTCs.

4. Attach the Authorized Modifications Label.





A. Using a permanent marker or ball point pen complete the Authorized Modifications Label and attach to the vehicle. The Authorized Modifications Label is available through the MDC P/N 00451-00001-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.

C. Test drive the vehicle to confirm proper operation.

© 2013 Toyota Motor Sales, USA