T-SB-0014-15
March 27, 2015
Page 4 of 12
Reception Diagnosis Using Antenna Test Kit
Diagnostic Procedure (Continued)
2. Check vehicle harnesses and coax cable for the following conditions:
• End-to-end resistance of the center conductor
• Short from conductor to the shield
• Short from conductor to chassis ground
• Pin fit at each end on each terminal
NOTE
If an “end-to-end resistance check” results in the DVOM display constantly increasing in value,
there might be a capacitor in the harness, making the check invalid.
Repair Procedure
AM/FM Radio Reception
1. Drive the vehicle outside and verify very poor, inoperative, or no AM/FM radio reception.
2. Gather detailed information from the customer on when and where the problem occurs (e.g.,
indoor/outdoor, certain locations only, certain weather conditions, AM/FM or both, or individual
stations affected).
3. Check for aftermarket accessories or other items that may affect reception (e.g., Rear Seat
Entertainment [RSE] system, radar detectors, FM modulator, metallic window tint, objects
hanging from mirror, toll passes, items laying on dash, etc.). Disconnect or remove the
component and recheck reception.
4. Check all antenna connections.
A. Confirm secure antenna connection(s) at the back of the radio.
B. Confirm secure antenna connections at the mast antenna or glass antenna connector.
5. Check the signal using the Antenna Test Kit.
Disconnect the vehicle antenna and connect the Radio Antenna from the Antenna Test Kit at the
back of the radio, then drive the vehicle outside. Use the Radio Conversion Cable if necessary.
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