Inspection Procedure 2

The secret code cannot be registered.

NOTE: If the transmitter battery has been changed but the secret code cannot be registered, the ETACS-ECU may be faulty. Check the following circuits, replace the ETACS-ECU if necessary.

Data Link Power Supply and Ground Circuit

Data Link Circuit

CIRCUIT OPERATION

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a malfunction of the ETACS-ECU or data link circuit.

TROUBLESHOOTING HINTS
- Malfunction of the ETACS-ECU
- Damaged harness wire or connector