Honda HR-V: Navigation System Symptom Troubleshooting - Audio-Navigation Unit Power Will Not Turn ON (No Information Display ON Touch Screen)
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-navigation 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-navigation unit to prevent damaging the CD player's load mechanism.
Audio-navigation 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-navigation unit.
4. 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-navigation 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-navigation unit and body ground (G404).
6. Audio-navigation unit check (substitution):
- Substitute a known-good audio panel.
- Reconnect audio-navigation unit connector A (24P), and recheck.
Does the symptom go away?
YES
Replace the original audio panel.
NO
Replace the audio-navigation unit.
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