Computers and Control Systems: Service Precautions

2UZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: PRECAUTION

PRECAUTION
CAUTION: When using the Techstream, observe the following items for safety reasons:
- Read its instruction books before using the Techstream.
- Prevent the Techstream cable from being caught on the pedals, shift lever and steering wheel when driving with the Techstream connected to the vehicle.
- When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One person drives the vehicle, and the other operates the Techstream.
NOTICE:
- After the ignition switch is turned off, the navigation system requires approximately 90 seconds to record various types of memory and settings. As a result, after turning the ignition switch off, wait 90 seconds or more before disconnecting the cable from the negative (-) battery terminal.
- Perform RESET MEMORY (AT initialization) for 2WD when replacing the automatic transmission assembly, engine assembly or ECM Programming and Relearning.
- Perform RESET MEMORY (AT initialization) for 4WD when replacing the automatic transmission assembly, engine assembly or ECM .
- Perform REGISTRATION (VIN registration) when replacing the ECM Programming and Relearning.
HINT: RESET MEMORY cannot be completed by only removing the battery.