General

DTC6 Theft Deterrent Relay Control Circuit Shorted To B+ Or Ground:

The Body Control Module (BCM) type 4 activates the exterior lights and horn based on:
^ Message received from the keyless entry system's Remote Control Door Lock Receiver (RCDLR) to perform the alarm mode.
^ The BCM detects a theft attempt when the content theft deterrent is in either armed or warning mode.

The BCM interfaces with the exterior lights through the theft deterrent relay. The theft deterrent relay allows the BCM to turn on the exterior lights, providing a visual alert.

The BCM energizes the theft deterrent relay (turning on the exterior lights) by grounding circuit 301 during the following modes:
^ Armed mode: When the content theft deterrent is in armed mode, the BCM turns on the exterior lights (once) for 975 ms (+/- 25 ms). The BCM turns on the exterior lights only if the remote activation verification is in either mode 2, 3 or 4. For more information regarding remote activation verification modes, refer to Diagnostic Aids. Diagnostic Aids

NOTE: The horn also sounds during this mode, the BCM sounds the horn first, then flashes the exterior lights.

^ Warning mode: The warning mode attempts to warn away potential intruders prior to setting off the alarm mode. lie exterior lights cycle on and off five times at a rate of 1 Hz (+/- 0.1 Hz) with a 20% (+/- 5%) active state duty cycle.

NOTE: The horn also sounds five times during this mode, although the BCM alternates between the horn and the exterior lights.

^ Alarm mode: When the content theft deterrent is in alarm mode, the BCM turns on and off the exterior lights for 2 minutes (or until the alarm is disarmed) at a rate of 1.0 Hz (+/- 0.1 Hz) with a 20% (+/- 5%) active state duty cycle.

NOTE: The horn also sounds during this mode, although the BCM alternates between the horn and the exterior lights.