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RADIO AND CD PLAYER TSB Revision CHASSIS ELECTRICAL 54A-353 STEP 2. Compare the customers radio to another Q: Is there more noise on the customers radio? YES : Check all power and ground connections. If all connections are in good condition, NO : The observed noise is normal. Inspection Procedure 12: Noise is detected with engine running. . DIAGNOSIS CAUTION • Never connect a noise filter to the high ten- sion cable (spark plug wire). Spark plug wires • Confirm that the noise is not from an external source. • Noise prevention should be performed by suppressing strong sources of noise first. Description of noise Condition Cause Solution AM, FM: ignition noise • Increasing the engine speed causes the • Disappears when the ignition switch turned • Electrical interference from the spark plugs. • Engine noise. • Check or replace the ground cable. • Check or replace spark plug wires. • Check or replace the noise capacitor. Other electrical - • Noise may intensify due to aging electrical • Repair or replace the electrical components. Static electricity (cracking, Noise disappears when • Noise occurs when parts or wiring move • Return parts or wiring to their proper Static electricity (cracking, • Various noises are produced depending • This may be due to the recent removal of • Properly ground parts. • Properly ground all body parts. |