checking for bad ground
Thread Starter
Racer
Joined: Sep 2014
Posts: 1,811
Likes: 91
From: Scottsdale, AZ
checking for bad ground
How hard or easy is it to check for a possible bad ground that may be causing interference in the audio system of my 2000 rx 300? Is there any link(s) to steps I can follow to check for this without having to pay a dealer? Thanks Matt
The two grounding points relevant to the radio reception ("bad ground") would be at the antenna mount (inside the rear fender) and at the radio mount to the metal chassis. If, on the other hand, you have a ground loop then that could be anywhere in the entire audio system.
What symptoms are you having (poor signal strength, ticking that increases with engine speed, whine that increases with engine speed)?
What symptoms are you having (poor signal strength, ticking that increases with engine speed, whine that increases with engine speed)?
Thread Starter
Racer
Joined: Sep 2014
Posts: 1,811
Likes: 91
From: Scottsdale, AZ
The two grounding points relevant to the radio reception ("bad ground") would be at the antenna mount (inside the rear fender) and at the radio mount to the metal chassis. If, on the other hand, you have a ground loop then that could be anywhere in the entire audio system.
What symptoms are you having (poor signal strength, ticking that increases with engine speed, whine that increases with engine speed)?
What symptoms are you having (poor signal strength, ticking that increases with engine speed, whine that increases with engine speed)?
The radio automatically switches to mono and reduces high frequencies when the signal strength is low. Yes, it sounds like a bad antenna signal. Could be the ground but more likely the center signal wire/connection. Note that the RX300 has a diversity antenna system and, in weak signal areas, switching between antennae can cause similar symptoms.
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matts6887
Lexus Audio, Video, Security & Electronics
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Nov 2, 2014 06:50 AM
