Antenna, Passive Entry: Description
Vehicles equipped with the Passive Entry (PE) and Keyless Go (KG) systems have several Low Frequency (LF), ferrite antenna units (2) located within the vehicle. Each ferrite PE antenna unit is contained within a molded black plastic housing with an integral connector receptacle (3) molded into one end. The connector receptacle contains terminal pins that connect the antenna to the vehicle electrical system through a twisted pair of conductors and a connector that are part of the adjacent wire harness.
Each antenna housing also includes an integral mounting flange or flanges (1) which can be used to mount the unit with screws. However, in some applications the antenna mounting flanges are snapped into a spring steel adapter or retainer, which allows the antenna unit to be securely clipped in place over a body flange rather than being secured with screws. This vehicle platform uses five PE antenna units. One is secured to the underside of the center floor console, one is secured to each rear door hardware module carrier concealed behind the inside door trim panels, one is secured in front of the rear seat to the floor and one is concealed behind the rear fascia to the bracket.
The antennas are each connected to the Radio Frequency Hub Module (RFHM) (also known as the RF Hub) on dedicated and sequentially numbered circuits. The is center floor console connected through the antenna 1 circuits, the right rear door antenna is connected through the antenna 2 circuits, the forward cargo floor antenna is connected through the antenna 3 circuits, the left rear door antenna is connected through the antenna 4 circuits and the rear fascia bracket antenna is connected through the antenna 5 circuits.
| PASSIVE ENTRY LOW FREQUENCY ANTENNA AND CIRCUIT NUMBERING | |
|---|---|
| Location | Antenna And Circuit Number |
| Left Rear Door | 1 |
| Right Rear Door | 2 |
| Center of vehicle, under rear seats | 3 |
| Center Floor Console | 4 |
| Rear Fascia Bracket | 5 |
An LF antenna unit cannot be adjusted or repaired. If ineffective or damaged, it must be replaced with a new unit. For applications where it is used, the antenna unit adapter or retainer may be serviced only as a unit with the LF antenna.