Honda HR-V: Poor AM Or FM Radio Reception Or Interference (With Navigation)
NOTE:
- Check the vehicle 12 volt battery condition first.
- Check for aftermarket accessories plugged into the vehicle accessory
power sockets.
- Check the radio reception in an open area. Compare it to a known-good
vehicle whenever possible. Poor reception/interference can be caused by the
following:
- The radio station is far away
- Atmospheric conditions are unfavorable
- Tall buildings, mountains, or high-voltage power lines are nearby
- Aftermarket metallic window tinting or electronic accessories
- Check the connectors for poor connections or loose terminals.
1. Problem verification:
- Turn the vehicle to the ON mode.
- Do the Seek Stop Test in the Sound Quality Diagnosis - Refer to: Audio
System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without
Navigation,
Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode
(Without Navigation, Color Audio Type (5-inch Screen) ).
Is the test vehicle within 10 % of the known-good vehicle?
YES
Multipath interference or weak station. Operation is normal.
NO
The failure is duplicated, go to step 2.
2. Determine possible failure area (charging system and ignition system,
others):
- Start the engine, and turn on the electrical loads one at a time
(defrosters, blower motor, etc.).
- 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 radio grounds. If OK, check the charging system and the
ignition system.
NO
Go to step 3.
3. Determine possible failure area (SWD +B line, AM/FM line):
- Disconnect the following connector.
Roof antenna connector A (3P)
- Turn the vehicle to the ON mode, and turn on the audio system.
- Measure the voltage between test points 1 and 2.
Is there battery voltage?
YES
The SWD +B wire is OK. Go to step 4.
NO
Go to step 9.
4. Open wire check (AM/FM line):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connector.
Audio-navigation unit connector E (3P)
- Check for continuity between test points 1 and 2.
Is there continuity?
YES
The AM/FM wire is not open. Go to step 5.
NO
Replace the AM/FM antenna lead and/or the sublead.
5. Shorted wire check (AM/FM line).
Check for continuity between test points 1 and 2.
Is there continuity?
YES
Replace the AM/FM antenna lead and/or the sublead.
NO
The AM/FM wire is not shorted. Go to step 6.
6. Shorted wire check (AM/FM line to SH (AM/FM) line).
Check for continuity between test points 1 and 2.
Is there continuity?
YES
Replace the AM/FM antenna lead and/or the sublead.
NO
The AM/FM wire is OK. Go to step 7.
7. Open wire check (SH (AM/FM) line).
Check for continuity between test points 1 and 2.
Is there continuity?
YES
The SH (AM/FM) wire is OK. Go to step 8.
NO
Replace the AM/FM antenna lead and/or the sublead.
8. Roof antenna check (substitution):
- Substitute a known-good roof antenna.
- Reconnect all the connectors, and recheck.
Does the symptom go away?
YES
Replace the original roof antenna.
NO
Replace the audio-navigation unit.
9. Open wire check (SWD +B line):
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connector.
Audio-navigation unit connector E (3P)
- Check for continuity between test points 1 and 2.
Is there continuity?
YES
The SWD +B wire is not open. Go to step 10.
NO
Repair an open in the wire between the audio-navigation unit and the roof
antenna.
10. Shorted wire check (SWD +B line).
Check for continuity between test points 1 and 2.
Is there continuity?
YES
Repair a short to body ground in the wire between the audio-navigation unit
and the roof antenna.
NO
Replace the audio-navigation unit.
READ NEXT:
NOTE:
Check the vehicle 12 volt battery condition first.
Check for aftermarket accessories plugged into the vehicle accessory
power sockets.
Check the radio reception in an open area. Compare it
NOTE:
Check the vehicle 12 volt battery condition first.
Check the radio reception in an open area. Poor reception/interference
can be caused by tall buildings, mountains, or high-voltage power l
NOTE:
Check the vehicle 12 volt battery condition first.
You can select three different rearview camera angles for backing up. If
there is no camera image on the display, go to Audio System Sympt
SEE MORE:
NOTE:
Check the vehicle 12 volt battery condition first.
Check the radio reception in an open area. Poor reception/interference
can be caused by tall buildings, mountains, or high-voltage power lines are
nearby.
Check the connectors for poor connections or loose terminals.
1. Problem verifi
Keyless Entry System
The keyless entry system is integrated with the multiplex integrated control
system. The multiplex integrated control unit (MICU) receives LOCK, UNLOCK, and
PANIC signals from the immobilizer-keyless control unit*1 or the keyless access
control unit*2.
The keyless entry syst