Notice to Technicians

Electromagnetic Interference (EMI) can cause a fewer number of stations to be received in one of the three modes. Various vehicle components may cause EMI. EMI may cause of the differences in reception.

Inspect for components that are powered up in the three various key positions. This action will eliminate some sets of conditions. For example, if the same number of stations are received with the engine running as when the engine was off, active components with the engine running are not causing interference.
1. Determine the type of audio complaint.
2. Attempt to duplicate the condition:
- Listen to AM or FM.
- Start the vehicle.
- Play a known good CD or cassette.
- Test the switches.