Remote Keyless Entry System: Notes
Concerns regarding poor RKE range typically involve the routing of the RKE antenna. The mounting of this RKE harness antenna (2) is critical to RKE range performance. It needs to be mounted to the clips (1) properly & insure maximum distance from vehicle metal structure of the A-pillar. The antenna must be straight and not coiled, curved or bunched up. The side air bag is conductive and can also interfere if the RKE harness antenna is not routed accurately. There should be a distinct "air-gap" between the 17cm exposed portion of the "coax antenna" (where the outer insulation and web ground shield are removed) AND the metal chassis of the A-Pillar. This antenna should extend far enough into the clip to secure this gap remains stable. The tip of the antenna should be protected with the electrical tape.
Following are tests that may help to diagnose the Remote Keyless Entry (RKE) system. However, these tests may not prove conclusive in the diagnosis of this system. The most reliable, efficient, and accurate means to diagnose the RKE system requires the use of a diagnostic scan tool and the appropriate diagnostic information. The diagnostic scan tool can provide confirmation that the Body Control Module (BCM) is being sent the proper Radio Frequency (RF) signals by the RKE transmitters to perform its RKE system functions.
Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.