The factory radio in my '13 Sport receives several local AM and FM stations poorly. I confirmed this by comparing reception in my car with another Sport, same year.
My car has an aftermarket sound system, including component speakers in the front doors, tweeters in the a-pillars, and a signal processor, 2-channel component amp, and monoblock amp in the trunk, driving a 12" sub.
The HU is connected to the signal processor with 14 gauge speaker wire, a 4 gauge wire feeds power from the battery to a distribution block in the trunk, and a 4 gauge wire connected to a second distribution block provides grounding for the amps and processor.
As instructed in the factory service manual, I confirmed that the antenna amplifier in the right rear c-pillar is receiving 12v from the battery. The amp may still be bad, however, as I haven't found a way to confirm any output to the antenna grid on the rear glass.
So despite the fact that the antenna amp receives power, and the electric grid on the rear glass has continuity, the reception problem persists.
The car is still under warranty, so I offered to pay a diagnostic fee to the dealer if they found that the aftermarket system was causing the problem. They claim that Honda tech line won't allow them to troubleshoot anything unless the aftermarket system is disconnected from the head unit. I am well aware of the fact that, in order to deny warranty coverage, Honda would have to prove that the aftermarket system caused the problem.
I didn't press the matter with the dealer because I'm concerned with them tearing into the dash on what might be a wild goose chase. So for now, I plan to continue diagnosing on my own, and would appreciate hearing from anyone whose car has had this problem and found a way to fix it.
My car has an aftermarket sound system, including component speakers in the front doors, tweeters in the a-pillars, and a signal processor, 2-channel component amp, and monoblock amp in the trunk, driving a 12" sub.
The HU is connected to the signal processor with 14 gauge speaker wire, a 4 gauge wire feeds power from the battery to a distribution block in the trunk, and a 4 gauge wire connected to a second distribution block provides grounding for the amps and processor.
As instructed in the factory service manual, I confirmed that the antenna amplifier in the right rear c-pillar is receiving 12v from the battery. The amp may still be bad, however, as I haven't found a way to confirm any output to the antenna grid on the rear glass.
So despite the fact that the antenna amp receives power, and the electric grid on the rear glass has continuity, the reception problem persists.
The car is still under warranty, so I offered to pay a diagnostic fee to the dealer if they found that the aftermarket system was causing the problem. They claim that Honda tech line won't allow them to troubleshoot anything unless the aftermarket system is disconnected from the head unit. I am well aware of the fact that, in order to deny warranty coverage, Honda would have to prove that the aftermarket system caused the problem.
I didn't press the matter with the dealer because I'm concerned with them tearing into the dash on what might be a wild goose chase. So for now, I plan to continue diagnosing on my own, and would appreciate hearing from anyone whose car has had this problem and found a way to fix it.
