Circuit/System Description

The active keyless entry system is considered to be the device to control the following: door locking/unlocking, trunk access, and panic function. The keyless entry system will unlock the vehicle doors or open the rear compartment when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the keyless entry transmitter sending a radio frequency signal to the external RF antenna located in the back glass. This antenna is connected via coax cable to the remote control door lock receiver (RCDLR). The RCDLR interprets the signal and activates the requested function via serial data message. Poor performance of the system may be due to:

• Insufficient connection of the external RF Antenna to the RCDLR
• Low transmitter battery
• Radio Frequency (RF) interference from aftermarket devices such as 2-way radios, power inverters, cellular phone chargers, computers, etc
• High RF traffic areas, such as gas stations which use pay-at-the-pump RF transponders