cardiagn.com Noise SYMPTOM SUSPECTED AREA SEE PAGE Noise occurs Noise occurs Noise produced by vibration or shock while driving. Noise occurs Noise produced when engine starts. Noise occurs Steering pad switch SYMPTOM SUSPECTED AREA SEE PAGE A audio system cannot be operated with steering pad switch. Audio system cannot be operated with steering pad switch. Rear seat audio SYMPTOM SUSPECTED AREA SEE PAGE Quality of sound from headphone connected to headphone terminal is poor or no sound can be heard. Rear seat audio sound quality is poor.