System Description

POWER DOOR LOCKS / REMOTE KEYLESS ENTRY
The CTM controls the door lock actuator assemblies to handle locking and unlocking with the key fob or interior switch.

Vehicles that are equipped with the Vehicle Theft Security System will also have the central locking feature. With the central locking feature, when the cylinder lock switch is turned to the lock position all the doors will lock. For unlocking, if the key is turned to the unlock position once, only that door will unlock. If the key is then turned a second time to the unlock position, all the doors will unlock.

There is also a door lock inhibit feature that prevents power locking of the doors if the ignition is OFF and the key is in the ignition. Automatic or "rolling locks" are included as a programmable feature. If the vehicle is moving approximately 15 mph and approximately 10 degrees of throttle opening is seen by the PCM, (the PCM will send this info to the CTM via the PCI bus) indicating acceleration, the CTM will cycle the lock actuators to lock the doors.

The highline CTM provides for Remote Keyless Entry (RKE).

The RKE system is placed in the programming mode by the DRB III, or by the customer program features. The system will store up to four key fob codes. Two fobs are supplied with the truck, additional fobs may be purchased through the parts department. Through the DRB III, erasing and programming of one key fob without deleting the others is possible. If the key fob is stolen, all the fob codes stored previously may be erased to provide the owner of the vehicle with an extra sense of security.