System Components

Security system components

Security system ECM



The system is built around the microprocessor based security ECM, which interfaces with vehicle inputs and outputs, controls vehicle functions and interfaces with the remainder of the security system. All of the interfaces and functions are microprocessor controlled by the security ECM software. Located in the right rear corner of the trunk the ECM is the RF receiver for the system. The ECM connects to the serial communications data link for diagnosis and programming.

Shock sensor
The dealer-installed accessory shock sensor detects impacts or jarring motions and inputs directly to the security system ECM. The shock sensor is located beside the security system ECM.

Key fob RF transmitter
The transmitter has a single button to operate all system functions. Since it is an RF transmitter, it does not have to be aimed at the vehicle. The nominal range of the transmitter is approximately 50 feet This is made possible by an integral coaxial antenna located in the vehicle harness. Note that the transmitter range will vary with environmental conditions and transmitter battery voltage.

Security switch
The security switch, located in the center console storage box, operates only when the system is disarmed. In the OFF position, the switch will inhibit the operation of the security system and allow remote lock / unlock and headlight convenience only.

IMPORTANT: Initial production 1994 vehicles will not be equipped with a security switch.

Warning LED
The red LED is located on the cigar lighter bezel. The LED flashes once every four seconds when the security system is armed, or when the system locks the doors in the security OFF mode.

Sounder
The sounder is a powerful speaker located to the rear of the left headlight.