Radio with Weak FM Signal and No AM at all - SB9T.com
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Old 10-11-2019, 08:51 AM   #1 (permalink)
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Default Radio with Weak FM Signal and No AM at all

I am trying to troubleshoot my 2010 Tribeca that has very poor radio reception. Ther have been 2 or 3 mentions of this on the forum, but nothing quite pinpoints the reason(s) as to why this is happening. My experience is in having very weak FM stations to the point that the seek/scan does not stop at any channel and there are NO AM stations at all with any type of reception.
So far, I have removed the center console and removed the Radio/Nav components to ensure everything is plugged in properly. It looks as if the antenna is hard-wired into the back of the radio and that a typical coax "Motorola" type connector is not present. What does the plug for the radio antenna look like and where is it located on the back of the unit?
I've also checked for 12v power and replaced the antenna amplifier booster in the top of the rear hatch with no improvement.

Can anyone recommend troubleshooting steps to help check the radio antenna connection and tips on how to get the signal to improve?
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Old 10-11-2019, 12:26 PM   #2 (permalink)
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The usual problem with this is wires in the the boot to the rear hatch breaking with age. They connect to the antenna embedded in the glass of the rear window I believe.

Tom
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Old 10-11-2019, 12:27 PM   #3 (permalink)
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You should remove the boot and look for broken wires.
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Old 10-11-2019, 12:29 PM   #4 (permalink)
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I've peeled back the wire boot on the driver's side of the hatch and all appear to be intact under the boot. No cracks in the insulation or broken wires can be seen with the boot pulled and out of the way when inspected.
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Old 10-14-2019, 11:52 AM   #5 (permalink)
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I'm stumped then...
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Old 10-15-2019, 07:29 AM   #6 (permalink)
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well how about checking to see if the antenna on the glass got scratched by something?

the antenna wire is black with a pink connector all by itself iirc,
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Last edited by Dodik; 10-15-2019 at 07:44 AM.
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Old 10-15-2019, 04:15 PM   #7 (permalink)
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Or directly measure the resistance of the antenna through the connector to verify.
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Old 10-16-2019, 11:04 AM   #8 (permalink)
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Next, I am going to check for continuity of the antenna wire from the back of the head unit to the connector in the back of the hatch so I can determine if the wire is broken anywhere in the chassis between these connection points. I think the AM/FM antenna is a grey connector and the GPS antenna uses the pink/purple connector.

Aside from that, what steps would I take to test resistance through the antenna?
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Old 10-18-2019, 06:21 AM   #9 (permalink)
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My 06 had an aftermarket ipod jack installed with a switch in the center console. If my reception gets bad, I check the switch and sure enough it had been turned on. Do you have any after market gadgets hooked up?
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Old 10-18-2019, 08:28 AM   #10 (permalink)
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No aftermarket items are installed. All factory equipped, GPS NAV, AM/FM,6-disc CD, Satellite Radio, AUX jack, and DVD entertainment
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