Honda HR-V: Audio Unit Power Switch Will Not Turn ON (No Information Display And No
Sound)
NOTE:
- Check the vehicle 12 volt battery condition first.
- Check the connectors for poor connections or loose terminals.
1. Problem verification:
- Turn the vehicle to the ON mode.
- Press the POWER button on to see if the audio unit turns on.
Does the audio system operate properly, and does the audio sound normal?
YES
Intermittent failure, the system is OK at this time.
NO
The failure is duplicated, go to step 2.
2. Fuse check:
- Turn the vehicle to the OFF (LOCK) mode.
- Check the following fuses.
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Are the fuses OK?
YES
Go to step 3.
NO
Replace the fuse (s), and recheck. If the fuse (s) blows again, check for a
short in the No. B22 (10 A) fuse and/or the No. C37 (7.5 A) fuse circuits.
3. Open wire check (+B AUDIO line):
- Disconnect the following connector.
NOTE: Eject all the discs before disconnecting the audio unit to prevent
damaging the CD player's load mechanism.
Audio unit connector A (24P)
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The +B AUDIO wire is OK. Go to step 4.
NO
Repair an open in the wire between the No. B22 (10 A) fuse in the under-hood
fuse/relay box and the audio unit.
3. Open wire check (ACC line):
- Turn the vehicle to the ON mode.
- Measure the voltage between test points 1 and 2.
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Is there battery voltage?
YES
The ACC wire is OK. Go to step 5.
NO
Repair an open in the wire between the No. C37 (7.5 A) fuse in the under-dash
fuse/relay box and the audio unit.
5. Open wire check (GND line):
- Turn the vehicle to the OFF (LOCK) mode.
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
The GND wire is OK. Go to step 6.
NO
Repair an open or high resistance in the wire between the audio unit and body
ground (G404).
6. Audio unit check (substitution):
- Substitute a known-good audio panel - Refer to: Audio Unit Removal and
Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal
and Installation (Color Audio Type (5-inch Screen) ).
- Reconnect audio unit connector A (24P), and recheck.
Does the symptom go away?
YES
Replace the original audio panel.
NO
Replace the audio unit - Refer to: Audio Unit Removal and Installation
(Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation
(Color Audio Type (5-inch Screen) ).
READ NEXT:
NOTE:
Check the vehicle 12 volt battery condition first.
Set the fader and the balance positions to the center.
Use auxiliary stereo cables with 3.5 mm ends only.
Check the connectors for poor co
NOTE:
Check the vehicle 12 volt battery condition first.
Check for B-CAN DTCs and resolve them before troubleshooting.
Before doing this troubleshooting, make sure whether a parking brake is
wor
NOTE:
Check the vehicle 12 volt battery condition first.
Before doing this troubleshooting, make sure whether a parking brake is
working properly and the electric parking brake indicator in the g
SEE MORE:
Removal and Installation
SRS components are located in this area. Review the SRS component locations -
Refer to: SRS Component
Location Index (KA/KC), or SRS Component Location Index (KA/KC) and the
precautions and
procedures before doing repairs or service.
1. 12 Volt Battery Terminal - Disconnec
NOTE: Examples used in this article are general in nature and do not
necessarily relate
to a specific engine or system. Illustrations and procedures have been chosen
to guide mechanic through engine overhaul process. Descriptions of processes
of cleaning, inspection, assembly and machine shop pract