NO. 1 AF NOISE OR POP NOISE ON ALL SOURCES (RADIO, CD, CASSETTE TAPE)
| 1 | AF noise or POP noise on all sources (Radio, CD, Cassette tape)/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., any foreign material, broken) Improper speaker installation Audio unit malfunction Poor connection of audio unit connector, terminal damage Antenna malfunction (e.g., poor ground) NOTE: AF noise is "Petit Petit" noise that generally occurs with switch ON/OFF operations of electrical equipment other than the audio unit, or "Gee" continual noise that occurs when electrical equipment is operated. This is caused by noise entrance to the power supply wiring, signal wiring, speaker cable or head of cassette deck etc. Therefore noise can be heard regardless of radio wave condition or audio volume position. The noise will start after one click from the minimum position of volume button but normally does not change even when volume is turned to higher position. POP noise is "Putsun", "Poco" or "Putsun" noise that occurs with switch ON/OFF operation of the audio unit, or with switching Radio to CD. Even normal audio unit sometimes emit small noise depending on conditions. |
| NOTE |
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| AF noise is "Petit Petit" noise that generally occurs with switch ON/OFF operations of electrical equipment other than the audio unit, or "Gee" continual noise that occurs when electrical equipment is operated. This is caused by noise entrance to the power supply wiring, signal wiring, speaker cable or head of cassette deck etc. Therefore noise can be heard regardless of radio wave condition or audio volume position. The noise will start after one click from the minimum position of volume button but normally does not change even when volume is turned to higher position. POP noise is "Putsun", "Poco" or "Putsun" noise that occurs with switch ON/OFF operation of the audio unit, or with switching Radio to CD. Even normal audio unit sometimes emit small noise depending on conditions. |
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 not installed 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 Antenna plug poor connection Antenna feeder malfunction Electronic jamming from outside, or inferior condition of broadcasting station radio wave Antenna installation loosened |
POSSIBLE CAUSE CHART (SYMPTOM)
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 not installed 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 Antenna plug poor connection Antenna feeder malfunction Electronic jamming from outside, or inferior condition of broadcasting station radio wave Antenna installation loosened NOTE: FM broadcast has feature "sound quality is good" and "resistant to noise", but FM broadcast has particular noises. Though audio unit is designed to reduce noise, there are times noise occurs due to conditions. |
| NOTE |
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| FM broadcast has feature "sound quality is good" and "resistant to noise", but FM broadcast has particular noises. Though audio unit is designed to reduce noise, there are times noise occurs due to conditions. |
POSSIBLE CAUSE CHART (SYMPTOM)
NO. 6 THERE IS A NOISE WHEN PLAYING THE CASSETTE TAPE PLAYER
| 6 | There is a noise when playing the cassette tape player/Possible DTC |
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| Troubleshooting hints Cassette tape is malfunctioning Cassette tape player is malfunctioning Poor connection of cassette tape player connector Dolby noise reduction is used improperly The aftermarket electrical parts interfere with the audio system |
TROUBLESHOOTING REFERENCE
