T-SB-0014-15
March 27, 2015
Page 6 of 12
Reception Diagnosis Using Antenna Test Kit
Repair Procedure (Continued)
Repair Procedure
AM/FM Radio Reception (Continued)
NOTE
• Comparison vehicles are a good resource to determine what kind of reception is available
in the area.
• If appropriate and within dealer policy, temporarily swapping a component (radio head
unit, extension box, NAV ECU, etc.) between the problem vehicle and a dealer-owned
vehicle is one method to confirm the cause.
Did the radio reception improve?
• YES — Continue to step 6 for vehicles with glass antenna, or step 7 for vehicles with
pole antenna.
• NO — Refer to applicable Repair Manual for further reception diagnosis.
6. Inspect the glass antenna for open/cut patterns.
• If an open pattern is found, repair as needed and recheck reception quality.
• If NO open pattern is found or reception is still poor after glass antenna repair, go to step 8
for antenna amplifier systems.
NOTE
Because a noise filter may exist in the antenna plug, which plugs into the radio, the antenna
cable will normally show an open circuit when checking continuity.
7. Connect the Radio Antenna from the Antenna Test Kit at the pole antenna connection.
Did the reception improve?
• YES — Replace the mast antenna assembly. (Refer to applicable Repair Manual
for instructions.)
• NO —
• For vehicles with antenna amplifier systems, go to step 8.
• For vehicles without antenna amplifier systems, refer to applicable Repair Manual for
further antenna amplifier reception diagnosis.
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