Diagnosis And Testing - On-Glass Antenna

The antenna grid pattern is screened on the inside of the back glass above the Electric Back Light (EBL) grid. For circuit descriptions and diagrams, refer to the appropriate wiring information. To detect breaks in the antenna grid elements, the following procedure is required:

1. Disconnect the antenna module pigtail wire connector from the antenna terminal on the inside of the back glass. Refer to MODULE, RADIO ANTENNA, REMOVAL .
2. Using an ohmmeter, connect one lead to the antenna terminal and with the other lead check each end of the grid pattern for continuity.
   NOTE:

   The resistance should be below 2.4 Ohms on each grid line.

   Measure the resistance of each antenna grid line. The resistance should be exactly the same for each line.

3. If the resistance is not exactly the same for each grid line, check for a breaks or voids in the grid lines. They may be hard to find as all the grid lines are tied together.
4. Even if the resistance is the same for all lines, do a very close visual inspection of the grid for breaks or voids.
5. A break or void in the antenna grid can be repaired using a Mopar® Rear Window Defogger Repair Kit or equivalent. Refer to GRID, DEFOGGER, STANDARD PROCEDURE .