Determination and Identifying Chart - Radio Frequency Interference (RFI)

This chart is to be used along with the diagnostic charts to help determine if the condition is RFI related and to help identify what electronic device in the vehicle is interfering with the radio. Make sure the information in the questionnaire is as accurate as possible. You must be able to duplicate the customer's concern to diagnose RFI conditions. The process of identifying RFI and the source of an interference is simply the proeess of elimination. When the source of the interference is disconnected from power, the radio will work properly.