Toyota ECU Flash Reprogramming Auto Diagnostics Software
ECU Flash Reprogramming
IT IS POSSIBLE TO PERMANENTLY DAMAGE THE ECU (ECM/PCM) DURING THE
FLASH REPROGRAMMING PROCESS.
You must read and understand the following precautionary
information before proceeding with reprogramming.
You can minimize the risk of damaging an ECU by understanding the
following precautions:
1. Battery must be fully charged and in good condition. BATTERY
VOLTAGE MUST NOT FALL BELOW 11.4 VOLTS OR RISE ABOVE 16.0 VOLTS
DURING THE REPROGRAMMING PROCESS.
2. All electrical accessories must be turned off and electrical
loads must not be altered significantly during the reprogramming
process (i.e. audio system, air conditioning system, interior
lighting, daytime running lights, etc)
3. The engine compartment hood must be open and under hood ambient
temperatures must not exceed 158ºF
4. Scantool/J2534 interface cables must be in good condition and
connections must be electrically sound prior to beginning
reprogramming (see TSB SS004-01, "ECU Flash Reprogramming Error
Message" for more detail).
5. Do not disconnect the scantool, J2534 interface or PC during the
reprogramming process; FAILURE TO FOLLOW THIS INSTRUCTION WILL
RESULT IN PERMANENT DAMAGE TO THE ECU.
6. Do not allow the PC running J2534 Calibration Update Wizard
software to go into standby or hibernation modes during the
reprogramming process; FAILURE TO FOLLOW THIS INSTRUCTION WILL
RESULT IN PERMANENT
DAMAGE TO THE ECU.
7. Do not cycle the ignition switch off during the reprogramming
process except where instructed to do so by the Calibration Update
Wizard or scantool software.
8. For ECUs that have more than one CPU to be reprogrammed, you
must COMPLETE ALL CPUs before returning the vehicle to service.
9. To ensure stable battery voltage during this process, it is
acceptable to connect a battery charger to the vehicle prior to
beginning the reprogramming operation. Charger must be set on "low"
charge rate and voltage must be maintained within the 11.4 volt to
16.0 volt window for the entire reprogramming process.
10. Set the parking brake for this operation
In addition to the above mentioned precautions, it is important to
READ THE SPECIFIC TSB ASSOCIATED WITH THE REPROGRAMMING EVENT YOU
ARE PERFORMING. Certain vehicles require removal of fuses to
prevent accessories from energizing during the reprogramming
process. FAILURE TO FOLLOW THE SPECIFIC DIRECTIONS IN THE
APPLICABLE TSB FOR VEHICLE YOU ARE REPROGRAMMING CAN RESULT IN
PERMANENT DAMAGE TO THE ECU.
View Getting-Started
Language: English
Quantity of CD: 1DVD
Date: 12.2009