Principles Of Operations

Handles, Locks, Latches and Entry Systems

Principles of Operations

Power Door Locks

The Generic Electronic Module (GEM) monitors the lock/unlock position of the door latches. When the GEM receives an unlock/lock command from either front door lock lever, the GEM energizes a relay (internal to the GEM) to supply the correct power and grounds for the front and sliding door lock actuators. The power door locks function independently of ignition status or vehicle speed.

Rear Cargo Door Lock/Unlock

The rear cargo doors lock upon any lock request from the door lock cylinder, lock lever, or Remote Keyless Entry (RKE) transmitter command. The rear cargo doors only unlock when requested by pressing the rear cargo door unlock button on an RKE transmitter, using a key in the cargo door lock cylinder, or from the lock lever on the cargo door latch. The rear cargo doors unlock when the front doors are unlocked only when the stepped unlock is disabled. Refer to Stepped Unlock Programming Stepped Unlock Programming for programming information.

When the GEM receives a signal from an RKE transmitter to unlock the rear cargo doors, the GEM energizes the rear cargo door lock relay which supplies voltage to the rear cargo door latch.

Remote Keyless Entry (RKE)

The GEM receives input from programmed RKE transmitters. The GEM requests the illuminated entry feature to turn the interior lamps on when an unlock command is received. If a lock command is received, the illuminated entry feature turns off. The RKE transmitter supplies a signal to the GEM when any button is pressed. The GEM then supplies voltage to the appropriate door lock actuator(s) to lock or unlock the doors. The RKE transmitter can also be used to unlock just the rear cargo doors.