NO.1 AF NOISE OR POP NOISE AT ALL SOURCES (RADIO, CD)
| 1 | AF noise or POP noise at all sources (Radio, CD) / Possible DTC: 09: Er20, 09: Er21 |
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| Troubleshooting hints 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 Audio amplifier malfunction (with BOSE) Poor connection of audio unit connector, terminal damage Poor connection of audio amplifier connector, terminal damage Antenna malfunction (e.g., poor ground) Open or short circuit in wiring harness between audio amplifier and ground (with BOSE) NOTE: AF 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 volume button 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 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 volume button 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. |
AF NOISE OR POP NOISE AT ALL SOURCES (RADIO, CD) TROUBLESHOOTING HINTS
NO.2 NOISE FROM RADIO (AM ONLY)
| 2 | Noise from radio (am only)/Possible DTC: 09: Er22 |
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| POSSIBLE CAUSE | Antenna rod is not installed (standard part) Jamming from aftermarket electronic equipment (two-way radio, navigation system, mobile phone, etc.) Noise from electrical system on vehicle (e.g. fuel pump) Battery malfunction Charging system malfunction Audio unit malfunction Poor connection of antenna feeder plug Antenna feeder malfunction Open or short circuit in wiring harness between audio unit and manual antenna (antenna amplifier power supply system) Electronic jamming from outside, or inferior condition of broadcasting station radio wave Antenna installation loosened |
NOISE FROM RADIO (AM ONLY) POSSIBLE CAUSES
NO.3 NOISE FROM RADIO (FM ONLY)
| 3 | Noise from radio (FM only)/Possible DTC: 09: Er22 |
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| POSSIBLE CAUSE | Antenna rod is not installed (standard part) Jamming from aftermarket electronic equipment (two-way radio, navigation system, mobile phone, etc.) Noise from electrical system on vehicle (e.g. fuel pump) Battery malfunction Charging system malfunction Audio unit malfunction Poor connection of antenna feeder plug Antenna feeder malfunction Open or short circuit in wiring harness between audio unit and manual antenna (antenna amplifier power supply system) Electronic jamming from outside, or inferior condition of broadcasting station radio wave Antenna installation loosened NOTE: FM broadcasts are known for good sound quality and resistance to noise, but FM broadcasts do carry characteristic noise. Though the audio unit is designed to reduce noise, there are times when noise occurs due to reception conditions. |
| NOTE |
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| FM broadcasts are known for good sound quality and resistance to noise, but FM broadcasts do carry characteristic noise. Though the audio unit is designed to reduce noise, there are times when noise occurs due to reception conditions. |
NOISE FROM RADIO (FM ONLY) POSSIBLE CAUSES
