Unlock (Transmitter) Driver's Door

When an unlock command is received from the transmitter, the BCM provides battery voltage through circuit 1391 to the driver door unlock relay in the IPFB. The driver door unlock relay coil, grounded by circuit 650, energizes and causes the relay contacts to close. When the contacts close, battery voltage is provided through the POWER DOOR LOCKS 20 A fuse, through the relay, and out the IPFB to the driver door motor.

The Saturn Security System is disabled when the UNLOCK button is pressed. If the horn chirp mode is enabled, the horn will chirp twice for confirmation that the Saturn Security System is disarmed.