NO.1 AF NOISE OR POP NOISE AT ALL SOURCES (RADIO, CD) [AUDIO]
| 1 | AF noise or POP noise at all sources (Radio, CD) |
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| Possible DTC | 09:Er20, 09:Er21 |
| Possible cause | Low vehicle battery voltage. Jammed radio signals from after market equipment. Speaker malfunction (e.g., foreign material penetration, damage) Improper speaker installation Audio unit malfunction Poor connection of audio unit connector, terminal damage Antenna malfunction (e.g., poor ground) NOTE: AF (audio frequency) noise is a snapping noise that generally occurs during ON/OFF switching operations of electrical equipment other than the audio unit, or a continual rasping noise that occurs when electrical equipment is operated. This is caused by noise interference in the power supply wiring, signal wiring, speaker cable or head of cassette deck. Therefore noise can be heard regardless of radio wave conditions or the audio volume position. The noise will start after one click from the minimum position of the POWER/VOLUME switch but normally does not change even when volume is turned to a higher position. POP noise is snapping or popping noise that occurs during ON/OFF switching operation of the audio unit, or when switching from radio to CD. Even a normal audio unit sometimes emits a little noise depending on the conditions. |
| NOTE |
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| AF (audio frequency) noise is a snapping noise that generally occurs during ON/OFF switching operations of electrical equipment other than the audio unit, or a continual rasping noise that occurs when electrical equipment is operated. This is caused by noise interference in the power supply wiring, signal wiring, speaker cable or head of cassette deck. Therefore noise can be heard regardless of radio wave conditions or the audio volume position. The noise will start after one click from the minimum position of the POWER/VOLUME switch but normally does not change even when volume is turned to a higher position. POP noise is snapping or popping noise that occurs during ON/OFF switching operation of the audio unit, or when switching from radio to CD. Even a normal audio unit sometimes emits a little noise depending on the conditions. |
