Antitheft Relay: Description and Operation

The Vehicle Theft Alarm (VTA) relay, located in the relay center Relay Box Diagrams, Connector Views under the glove box, is used for headlamp operation when the alarm has been triggered.

When the alarm has been triggered, the VTA module supplies power to the coil side of the VTA relay on circuit G79. This causes the relay to energize connecting circuits L11, which is the feed for the FLASH TO PASS portion of the dimmer switch, to circuit L3.

Circuit L3 is the feed for the high beam headlamps. The VTA module cycles the power to the VTA relay causing the headlamps to flash.

Ground for the coil side of the VTA relay is supplied on circuit Z1.