Audio remote switch does not work properly

NOTE:

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

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

YES -Go to step 2.

NO -Replace the remote switch (see AUDIO REMOTE SWITCH REPLACEMENT ).
Check the audio unit operation (volume, channel, and mode).
Is the audio unit operation OK?

YES -Go to step 3.

NO -Substitute a known-good audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ), and recheck. If the problem goes away, replace the audio unit.
Remove the audio unit (see AUDIO UNIT REMOVAL/INSTALLATION ).

Measure the resistance between audio unit 20P connector terminal No. 3 and audio remote switch 6P connector terminal No. 5 as specified in the table.

Fig 1: Measuring Resistance Between Audio Unit 20P Connector Terminal No. 3 And Audio Remote Switch 6P Connector Terminal No. 5

Courtesy of AMERICAN HONDA MOTOR CO., INC.

AUDIO REMOTE SWITCH TABLE

AUDIO REMOTE SWITCH REFERENCE

Button held down	VOL DOWN	VOL UP	CHANNEL UP	MODE	(No button pressed)
Resistance	about 512 Ω	about 263 Ω	about 1.1 KΩ	about 2.5 KΩ	about 10 KΩ

Is the resistance OK?

YES -Go to step 5.

NO -Repair open or high resistance in the circuit between the audio unit and the audio remote switch. If the wires are OK, check audio remote switch ground (G501).

Disconnect the audio unit 20P connector and audio remote switch 6P connector.
NOTE: Eject the disc before removing the audio unit to prevent damaging the CD player's load mechanism.
Check for continuity between audio unit 20P connector terminal No. 3 and body ground.

Fig 2: Checking Continuity Between Audio Unit 20P Connector Terminal No. 3 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair short to body ground in the wire between the audio unit and the audio remote switch.

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