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Antenna Module Diagnosis Table

WARNING: This page is about a different car, the 2004 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
ANTENNA MODULE DIAGNOSIS

CONDITION POSSIBLE CAUSES CORRECTION
NO AM RECEPTION WEAK FM RECEPTION
  1. Antenna module to antenna connector open or disconnected.
  2. Coax open or disconnected.
  3. No battery power at antenna module.
  1. Repair open, reconnect antenna module connector to glass mounted antenna.
  2. Repair open, reconnect coax.
  3. Check fuse. if okay, repair open in battery voltage circuit.
NO AM OR FM RECEPTION
  1. Coax disconnected at radio.
  2. Coax shorted to ground.
  1. Reconnect coax.
  2. Repair or Replace coax
WEAK OR NO AM/FM RECEPTION
  1. Antenna Module faulty.
  1. Substitute known good module. If reception improves, Antenna Module was faulty.
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