Audio System Symptom Troubleshooting - Radio remote switch does not work properly

Radio remote switch does not work properly


1.Test the radio remote switch.

Is the radio remote switch OK?


YES - Go to 2.


NO - Replace the radio remote switch.n


2.Check the audio unit operation (volume up, volume down, CH (-), CH (+), MODE).

Is the audio unit operation OK?


YES - Go to 3.


NO - Replace the audio unit.n


3.Remove the audio unit.

4.Measure the resistance between audio unit connector B (20P) No. 6 and No. 7 terminals as specified in the table.

 

RADIO REMOTE SWITCH TABLE
Button held down VOL DOWN VOL UP CH (-) CH (+) MODE (NONE) 
Resistance about 100 W about 370 W about 840 W about 2.0 KW about 6.0 KW 10 kW 

Is resistance OK?


YES - Go to 5.


NO - Repair open or high resistance in the circuit between the audio unit and the radio remote switch. If the wires are OK, replace the cable reel.n

5.Check for continuity between the No. 6 and No. 7 terminals of audio unit connector B (20P) and body ground.

 

Is there continuity?


YES - Repair short to body ground in the circuit between the audio unit and the radio remote switch. If the wires are OK, replace the cable reel.n


NO - Replace the audio unit.n