| 摘要 |
A keyless entry sysem includes a RF/LF transmitter (24), a passive signaling device (22), an entry antenna (32), a passive entry module PEM (34), an electronics module (36) and a transponder antenna (38). The transponder antenna (38) communicates directly with the electronics module (36). Should the PEM fail, locating the passive signaling device (22) adjacent the transponder antenna (38) will authorize engine start. Since the transponder antenna (38) does not communicate with the electronics module (36) through the PEM (34), failure of the PEM (34) does not result in a vehicle immobilizing single point failure. |
