Operation CHARM: Car repair manuals for everyone.

Test D: Poor Reception - AM/FM

PINPOINT TEST D: POOR RECEPTION - AM/FM


D1-D5:






D6-D11:






Normal Operation
The radio antenna receives AM and FM radio waves. The antenna then sends the radio waves to the audio unit through the antenna cable. The noise suppression equipment reduces engine ignition and electrical systems interference transmitted through the speakers.

When installing any new noise suppression equipment components, make sure that a good contact is made at all connections. Remove any paint or dirt from between a component and its ground. Tighten all connectors and fasteners securely.

Possible Causes
- Antenna
- Antenna cable(s)
- Charging system
- Ignition system
- Noise suppression equipment
- Audio unit