Audio Remote Switch Does Not Work Properly (With Navigation)
Audio System Symptom Troubleshooting - Audio remote switch does not work properly
Audio remote switch does not work properly (with navigation)
NOTE:
- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
2. Turn on the audio-navigation unit, and check the audio remote switch operation (volume up, volume down, CH (UP), CH (DOWN), MODE).
Is the audio system operation OK?
YES -
Intermittent failure, the system is OK at this time.
NO -
Go to step 3.
3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
4. Do the Audio Remote Switch Test Audio Remote Switch Test.
Is the audio remote switch OK?
YES -
Go to step 5.
NO -
Replace the audio remote, HFL-navigation voice control switch Overhaul.
5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
6. Reconnect the audio remote, HFL-navigation voice control switch 12P connector.
7. Disconnect audio-navigation unit connector A (24P).
NOTE: Eject all the disc(s) before disconnecting the audio-navigation unit to prevent damaging the CD/DVD player's load mechanism.
8. Measure the resistance between audio-navigation unit connector A (24P) terminals No. 5 and No. 16 as specified in the table.
AUDIO REMOTE SWITCH TABLE
Is the resistance OK?
YES -
Go to step 9.
NO -
Repair a short or high resistance in the wires between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel Service and Repair.
9. Disconnect the audio remote, HFL-navigation voice control switch 12P connector.
10. Check for continuity between body ground and audio-navigation unit connector A (24P) terminals No. 5 and No. 16 individually.
Is there continuity?
YES -
Repair a short to body ground in the wire(s) between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel Service and Repair.
NO -
Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, then reconnect all of the connectors, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.