Poor RDS-TMC reception or interference NOTE: Check the RDS-TMC reception in an open area. Poor reception/interference can be caused by the following:

- The RDS-TMC station is too far away.
- Atmospheric condition are unfavorable.
- Tall buildings, mountains, or high-voltage power lines are nearby.

1. Check if the RDS-TMC reception/interference is the same in several locations.

Is the reception/interference the same?

YES | - | Go to Step 2 .
NO | - | Multipath interference or weak station. Operation is normal.■

1. Check the reception/interference while the engine is running.

Is there noise (static or whine) only with the engine running?

YES | - | Check the antenna and navigation grounds. If OK, check the charging system and the ignition system.■
NO | - | Go to Step 3 .

1. Wrap aluminum foil (A) around the tip of a tester probe (B) as shown.