NOTE:
1. Problem verification:
Is the audio-navigation unit operation OK?
YES
Intermittent failure, the system is OK at this time.
NO
The failure is duplicated, go to step 2.
2. Audio remote switch check:
Is the audio remote switch OK?
YES
Go to step 3.
NO
Replace the audio remote switch.
3. Wire check (AUDIO REMOTE SW, REMOTE SW GND lines).
Audio-navigation unit connector A (24P)
Is the resistance OK?
YES
Go to step 4.
NO
Repair an open or a short in the wire (s) between the audio-navigation unit, the cable reel, and the audio remote switch. If the wire is OK, replace the cable reel.
4. Wire check (DISPLAY SW line).
Measure the resistance between test points 1 and 2 as specified in the table.
Is the resistance OK?
YES
Go to step 5.
NO
Repair an open or a short in the wire between the audio-navigation unit, the cable reel, and the audio remote switch. If the wire is OK, replace the cable reel.
5. Shorted wire check (AUDIO REMOTE SW line to DISPLAY SW line).
Audio remote switch 12P connector
Is there continuity?
YES
Repair a short in the wires between the audio-navigation unit, the cable reel, and the audio remote switch. If the wires are OK, replace the cable reel.
NO
The AUDIO REMOTE SW wire to DISPLAY SW wire are not shorted. Go to step 6.
6. Shorted wire check (AUDIO REMOTE SW, DISPLAY SW lines).
Check for continuity between test points 1 and 2.
Is there continuity?
YES
Repair a short to body ground in the wire (s) between the audio-navigation unit, the cable reel, and the audio remote switch. If the wires are OK, replace the cable reel.
NO
Replace the audio-navigation unit.
AUDIO SYSTEM SOUND IS WEAK OR DISTORTED (DISPLAY IS NORMAL)
NOTE:
1. Problem verification:
Is there sound from the speakers, and is the sound quality normal in each mode?
YES
Intermittent failure. The system is OK at this time. Check for loose connections at the audio-navigation unit or audio unit and each speaker.
NO: Sound is weak or distorted in AM/FM mode
Go to Audio System Symptom Troubleshooting - Poor AM or FM radio reception or interference (With Navigation) or Audio System Symptom Troubleshooting - Poor AM or FM radio reception or interference (Without Navigation).
NO: Sound is weak or distorted in all mode
Go to Audio System Symptom Troubleshooting - No sound is heard from the speaker(s) (display is normal) (With Navigation) or Audio System Symptom Troubleshooting - No sound is heard from the speaker(s) (display is normal) (Without Navigation, Color Audio Type (5-inch Screen) ) or Audio System Symptom Troubleshooting - No sound is heard from the speaker(s) (display is normal) (Without Navigation, Display Audio Type (7-inch Screen) ).
NO: Sound is weak or distorted in CD mode
Check for disc damage (scratches, fingerprints, and marks).