Pre-Check

PRE-CHECK

NOTE:
If the ignition switch is turned to ON position with the Air-bag Sensor Assy Center connectors disconnected, or if a vehicle battery is removed with the ignition switch to ON position or if the +B circuit is OPEN within 10 sec. after the ignition switch is turned to LOCK position, the system will determine this condition as a failure and it will automatically call the call center. To prevent this, perform the following when working on operation related to the Airbag Sensor Assy Center or a battery:
- Disconnect the connectors of the telephone ECU (Mayday ECU) and the back-up battery before disconnecting the Airbag Sensor Assy Center connectors (Disconnect the connectors of the vehicle harness and the LEXUS Link System assembly).
- Be sure that the ignition switch is OFF when removing a vehicle battery.

HINT:
- When an accidental call is made automatically, access to the call center and ask them to cut off the line.
- If no signal has been received from the Airbag Sensor Assy Center since the ignition switch was turned to ON position, a service call will be made.
- If signal reception from the Airbag Sensor Assy Center is interrupted while the ignition switch is ON position, and emergency call will be made.