ECU Communication ID Registration

The ECU communication ID should be registered when the transponder key ECU is replaced in order to match it to PCM communication ID. The engine cannot be started unless the PCM communication ID matches.

Do not turn the ignition switch from ON to OFF 20 times or more before setting the ECU communication ID. If this operation is likely to be performed 20 times or more, disconnect the cable from the negative battery terminal in order to avoid disabling engine start. Failure to do sow will result in the engine not starting unless the transponder key ECU is replaced with a new one.

After the registration, turning the ignition switch may not start the engine on the first try. If so, turn the ignition switch again. After the engine is started, erase DTC B2799 by either using the scan tool or by disconnecting the battery for 30 seconds.

Register the ECU communication ID after the transponder key ECU is replaced as follows:

1. Connect a fused jumper wire between DLC connector terminal 4 and terminal 13.
2. Turn the ignition switch ON and leave it as is for 30 minutes.
3. Check that the engine starts.