Symptom Troubleshooting

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.

- Check the connectors for poor connections or loose terminals.

- Audio button operation can be checked by doing the hard key status test in the audio-navigation unit check screen See navigation system diagnostic mode.. Navigation System Diagnostic Mode (With Navigation)

1. Test the audio remote switch. Audio Remote Switch Test (With Navigation)

Is the audio remote switch OK?
YES - Go to step 2.

NO - Replace the audio remote switch.


2. Turn the ignition switch to ON (II).

3. Turn on the audio-navigation unit, and check operation (volume up, volume down, CH (+), CH (-), MODE).

Is the navigation unit operation OK?
YES - Go to step 4.

NO - Replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)


4. Remove and disconnect the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)

5. 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 6.

NO - There is an open or high resistance in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel. Service and Repair






6. Check for continuity between audio-navigation unit connector A (24P) terminals No. 5 and No. 16 and body ground individually.

Is there continuity?
YES - There is a short to body ground in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel. Service and Repair

NO - Replace the audio-navigation unit. Audio-Navigation Unit Removal/Installation (With Navigation)