Test M: Poor Quality/Distorted Sound From All Speakers

PINPOINT TEST M: POOR QUALITY/DISTORTED SOUND FROM ALL SPEAKERS

M1-M6:

M7-M8:

Normal Operation
The radio suppression equipment reduces engine ignition and electrical systems interference transmitted through the speakers. When installing any new radio 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 screws securely according to torque specifications.

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