Audio Remote Switch Does Not Work Properly

Symptom Troubleshooting: Audio remote switch does not work properly

Audio remote switch does not work properly

NOTE:

- Check the vehicle battery condition first. Testing and Inspection

- Check the connectors for poor connections or loose terminals.

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

2. Turn on the audio unit, and check the audio remote switch operation (volume up, volume down, CH (UP), CH (DOWN), MODE).

Is the audio unit operation OK?
YES - Intermittent failure, audio remote switch is OK at this time. Check for loose connections.

NO - Go to step 3.


3. Test the audio remote switch. Audio Remote Switch Test

Is the audio remote switch OK?
YES - Go to step 4.

NO - Replace the audio remote switch. Overhaul


4. Turn the ignition switch to LOCK (0).

5. Remove the audio unit. Audio Unit Removal/Installation

6. Disconnect the audio unit connector A (24P).

NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.

7. Reconnect the audio remote switch, and measure the resistance between audio 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 8.

NO - Repair open or high resistance in the circuit between the audio unit and the audio remote switch. If the wires are OK, replace the cable reel. Service and Repair If the condition is still present, substitute a known-good audio unit Audio Unit Removal/Installation and recheck. If the symptom/indication goes away, replace the original audio unit. Audio Unit Removal/Installation






8. Disconnect audio remote switch 12P connector.

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

Is there continuity?
YES - Repair the short to body ground in the circuit between the audio unit and the audio remote switch. If the wires are OK, replace the cable reel. Service and Repair If the condition is still present, substitute a known-good audio unit Audio Unit Removal/Installation and recheck. If the symptom/indication goes away, replace the original audio unit. Audio Unit Removal/Installation

NO - Replace the audio unit. Audio Unit Removal/Installation