Reception Level Indication Mode (press and hold FM/AM button, FM button or AM button for 5 sec)
This diagnostic screen checks the audio-navigation unit's or the audio unit's reception level in decibels (dB). This level then can be used in the diagnosis of the audio-navigation unit or the audio unit reception quality.
With navigation
| Display Message | Vehicle Test Condition | Remarks |
|---|---|---|
| 12.3 DB | Radio reception level is 12.3 dB [antenna power supply (SWD +B) is on] | |
| A 12.3 DB | Antenna power supply (SWD +B) is off | A is displayed on the display |
Without navigation
| Display Message | Vehicle Test Condition | Remarks |
|---|---|---|
| 123 | Radio reception level is 12.3 dB [antenna power supply (SWD +B) is on] | |
| A 123 | Antenna power supply (SWD +B) is off | A is displayed on the display |
Preparation:
- Park the vehicle outside in a good location away from tall buildings, mountains, high-voltage power line or any other object that may interfere with reception.
- Tune to a powerful local FM radio station then write down the radio station number.
- Tune to a powerful local AM radio station then write down the radio station number.
1. Enter the reception level indication mode in the self-diagnostic function.
2. Tune to the FM radio station you wrote down in Preparation using the tuning button, and note the decibel level of that station when you release the button.
3. Press and release the A.SEL button to turn the AM/FM antenna amplifier off.
4. Note the decibel level of that station with the AM/FM antenna amplifier off.
5. Press and release the A.SEL button to turn the AM/FM antenna amplifier back on.
6. Press and hold the FM/AM button (with XM) or the AM button (without XM) for more than 5 seconds to enter the AM reception mode.
7. Tune to the AM radio station you wrote down in preparation using the tuning button, and note the decibel level of that station.
8. Press and release the A.SEL button to turn the AM/FM antenna amplifier off.
9. Note the decibel level of that station with the AM/FM antenna amplifier off.
10. Press and release the A.SEL button to turn the AM/FM antenna amplifier back on.
11. To end the self-diagnostic mode, turn the audio system off, or press the engine start/stop button to select the OFF mode.Compare your results to a known-good vehicle, (make sure it is the same year and trim level) in the same location and direction, and under the same environmental conditions.
- If the reception level is within 10 % of the known-good vehicle, no repair is needed at this time.
- If the reception level is at least 10 % less than the known good vehicle, go to Poor AM or FM radio reception or interference troubleshooting.