( TF09E4PJ10300000000FAAT14 )
Audio System Symptom Troubleshooting - Audio remote switch does not work properly
Audio remote switch does not work properly
NOTE:
  • Check the vehicle battery condition first.
  • Check the connectors for poor connections or loose terminals.
  1. Turn the ignition switch to ON (II).
  1. Turn on the audio unit and check the audio unit operation (volume up, volume down, CH (UP), CH (DOWN), MODE).
Is the audio unit operation OK?
YES -
Go to Step 3 .
NO -
  1. Turn the ignition switch to LOCK (0).
Is the audio remote switch OK?
YES -
Go to Step 5 .
NO -
  1. Disconnect audio unit connector A (24P).
    NOTE: Eject the CD before removing the audio unit to prevent damaging the CD player's load mechanism.
  1. 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

Button held down
VOL DOWN
VOL UP
CH (−)
CH (+)
MODE
No button pressed
Resistance
about 100 Ω
about 357 Ω
about 775 Ω
about 1.7 kΩ
about 3.7 kΩ
about 10 kΩ

Is the resistance OK?
YES -
Go to Step 8 .
NO -
Repair short 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. 5 and No. 16 terminals of audio unit connector A (24P) individually.
Is there continuity?
YES -
Repair 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 -