Audio Unit
WARNING: This page is about a different car, the 2004 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.
TROUBLE DIAGNOSES
| Symptom |
Possible causes |
Repair order |
| Audio unit inoperative (no digital display and no sound from speakers). |
- 10A fuse
- Poor audio unit case ground
- Audio unit
|
- Check 10A fuse [No. 1, located in fuse block (J/B)]. Turn ignition switch ON and verify that battery positive voltage is present at terminal 10 of audio unit.
- Check audio unit case ground.
- Remove audio unit for repair.
|
| Audio unit presets are lost when ignition switch is turned OFF. |
- 15A fuse
- Audio unit
|
- Check 15A fuse [No. 32, located in fuse and fusible link box] and verify that battery positive voltage is present at terminal 6 of audio unit.
- Remove audio unit for repair.
|
| AM/FM stations are weak or noisy. |
- Antenna
- Poor audio unit case ground
- Audio unit
|
- Check antenna.
- Check audio unit case ground.
- Remove audio unit for repair.
|
| Audio unit generates noise in AM and FM modes with engine running. |
- Poor audio unit case ground
- Loose or missing ground bonding straps
- Ignition condenser or rear window defogger noise suppressor condenser
- Ignition coil(s)
- Audio unit
|
- Check audio unit case ground.
- Check ground bonding straps.
- Replace ignition condenser or rear window defogger noise suppressor condenser.
- Check ignition coil(s).
- Remove audio unit for repair.
|
| Audio unit generates noise in AM and FM modes with accessories on (switch pops and motor noise). |
- Poor audio unit case ground
- Antenna
- Accessory ground
- Faulty accessory
|
- Check audio unit case ground.
- Check antenna.
- Check accessory ground.
- Replace accessory.
|