Audio remote switch does not work properly

NOTE:

Check the vehicle battery condition first.
Always check for poor connections or loose terminals.

Test the radio remote switch (see AUDIO REMOTE SWITCH TEST ).
Is the audio remote switch OK?

YES - Go to step 2.

NO - Replace the audio remote switch (see AUDIO REMOTE SWITCH TEST ).
Turn the ignition switch ON (II).
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 4.

NO - Replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ), and recheck.
Turn the ignition switch OFF.
Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).
NOTE: Eject all the CDs before removing the audio unit and CD changer to prevent damaging the CD player's load mechanism.

Measure the resistance between the audio unit connector A (20P) No. 3 and No. 11 terminals as specified in the table.

Fig 1: Measuring Resistance Between Audio Unit Connector A (20P) No. 3 And No. 11 Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.

AUDIO REMOTE SWITCH

AUDIO REMOTE SWITCH CHART

Button held down	VOL DOWN	VOL UP	CH (-)	CH (+)	MODE	(NONE)
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 7.

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 (see CABLE REEL REPLACEMENT ).

Check for continuity between the No. 3 and No. 11 terminals of the audio unit connector A (20P) and body ground.

Fig 2: Checking Continuity Between No. 3 And No. 11 Terminals Of Audio Unit Connector A (20P) And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

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 (see CABLE REEL REPLACEMENT ).

NO - Replace the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).