Be sure to perform the ETC module learning procedure when replacing or reinstalling the ETC module.
Wait for 1 minute with the ignition switch ON.
Start the engine and keep it idle for 15 minutes.
Waif for 1 minute with the ignition switch OFF.
Restart the engine, and check that the idle speed is stable.
If the ETC module learning procedure is not performed after replacing or reinstalling the ETC module, MIL illumination with DTCs may occur.