Content Theft Deterrent (CTD) Circuit Description

The theft deterrent system on this vehicle is comprised of one the following two separate Systems:
^ The Personal Automotive Security System (PASS-key(R) III)
^ The Content Theft Deterrent (CTD) system

GM Engineers design the Personal Automotive Security System (PASS-Key(R) III) in order to prevent vehicle auto theft by disabling the engine. An exception is using a key with a specific electrical value in the ignition lock cylinder. The system includes the following components:
^ The black or gray ignition key
^ The steering column ignition lock cylinder
^ The Personal Automotive Security System (PASS-Key(R) III)
^ The Powertrain Control Module (PCM)

GM Engineers design the CTD system is designed in order to provide a warning in the event of a forced entry through the doors. When there is a forced entry, the alarm warning activates. The following functions occur for approximately 3 minutes:
^ The horn sounds intermittently
^ The lights flash in unison

The CTD system includes the following components:
^ The door jamb switches
^ The door lock cylinder switches
^ The door modules
^ The exterior lights
^ The horns
^ The Remote Function Actuator (RFA) module

The following systems control the yellow SECURITY indicator on the instrument cluster:
^ The PASS-Key(R) III system
^ The CTD system

The following notes apply to the theft deterrent system:
^ In the PASS-Key(R) III system, the PASS-key(R) III module commands the RFA module in order to control the indicator only with the ignition switch in the RUN position.
^ In the CTD system, the RFA module controls the indicator only with the ignition switch in the OFF position.
^ If the engine cranks but does not start, the PASS-Key(R) III system is not causing the condition.
^ The content theft deterrent system does not affect the starting of the engine.