Initial System Diagnosis

1. Determine type of audio complaint.
2. Make sure that the customer does not have an aftermarket mobile electronic component, such as a cellular telephone, that has been removed before the vehicle was left for service. This is extremely important, because that component may be emitting the frequency(s) that is (are) causing the complaint.
3. Try to duplicate condition (listen to AM or FM, start vehicle, put in a good CD or cassette, test switches, etc.).
^ Refer to the Hardware Symptom Table for the appropriate diagnostic procedure(s) for hardware related failures or performance complaints.
^ Refer to the Noise Symptom Table for the appropriate diagnostic procedure(s) for noise or reception complaints.