Audio System Symptom Troubleshooting - Audio remote switch does not work properly
Audio remote switch does not work properly
Is the audio remote switch OK?
YES -
Go to Step 2 .
NO -
Replace the audio remote switch.■
  1. Check the audio unit operation (volume up, volume down, CH (−), CH (+), MODE).
Is the audio unit operation OK?
YES -
Go to Step 3 .
NO -
  1. Reconnect the audio remote switch and measure the resistance between the audio unit connector B (20P) No. 6 and No. 7 terminals as specified in the table.

AUDIO REMOTE SWITCH TABLE

Button held down
VOL DOWN
VOL UP
CH (−)
CH (+)
MODE
(NONE)
Resistance
about 100 Ω
about 370 Ω
about 840 Ω
about 2 kΩ
about 4 kΩ
10 kΩ

Is the resistance OK?
YES -
Go to Step 5 .
NO -
Repair the 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. ■
  1. Check for continuity between body ground and the No. 6 and No. 7 terminals of audio unit connector B (20P) 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. ■
NO -