Keyless Entry System: Operation: Unlock

The Unlock function is separated into two operations depending on how the Unlock Button is pressed on the Transmitter. If the unlock button is pressed once, only the LH door is unlocked. If the Unlock button is pressed twice within 1 to 5 seconds, both doors will be unlocked.

When the Unlock Button is pressed once on the Transmitter and the keyless Entry Module receives a signal with a valid VAC, the Unlock Function sequence is performed. The Keyless Entry Module will supply battery voltage to the LH Door Lock Motor via the TAN/WHT 694 wire. The Motor is grounded through the contacts of the Lock Relay in the Door Lock Relay. The LH Door Lock Motor runs to unlock the LH Door.

If the Unlock Button on the Transmitter is pressed twice to unlock all Doors, The Keyless Entry Module will activate the Door Unlock output at pin "G". The Keyless Entry Module will then supply battery voltage to the coil of the Unlock Relay in the Door Lock Relay. The Unlock Relay is energized and closes its contacts. Battery voltage is supplied to the RH Door Lock Motor. The motor is grounded through the contacts of the Lock Relay in the Door Lock Relay. The motor runs to unlock the passenger's door.