Englische Sprache, mit Zeichnungen

Purpose of the System
Hardware Features
Central Locking - ZKE IV
System Components: Inputs - Processing - Outputs
Lock Actuator Operation
UNLOCKED-NEUTRAL POSITION
Central Locking System Terminology
“Single lock”, “Central lock”: Vehicle is locked via the lock knob, or the console mounted central lock button (>12-95 prod).
“Double lock”, “Central arrest”: Vehicle has been locked from the exterior with the key at the driver’s door, passenger’s door or trunk.
SINGLE LOCK - Phase 1, mechanical lock at door and lock signal generation
SINGLE LOCK - Phase 2, activation of actuators at all door locks
DOUBLE LOCK - Electrical Activation
DOUBLE LOCK - Mechanically Decoupled
UNLOCK FROM DOUBLE LOCK
Locking Protection
Crash Signalling
Door Lock Heating (optional)

Details and drawings here


http://www.unofficialbmw.com/images/lock.pdf