Audio Remote Switch Does Not Work Properly (Without Navigation)

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
Check the connectors for poor connections or loose terminals.

Check the audio unit operation.
Do AUDIO REMOTE SWITCH TEST/REPLACEMENT ).
Is the audio remote switch OK?

YES - Go to step 3.

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

Measure the resistance between audio unit connector A (20P) terminals No. 3 and No. 14 as specified in the table below.

AUDIO REMOTE SWITCH TABLE

Button held down	VOL DOWN	VOL UP	CH	MODE	No button pressed
Resistance	about 50 Ω	about 300 Ω	about 900 Ω	about 2.4 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, replace the cable reel (see CABLE REEL REPLACEMENT ).

Fig 1: Measuring Resistance Between Audio Unit Connector A (20P) Terminals No. 3 & No. 14

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Check for continuity between audio unit connector A (20P) terminals No. 3 and No. 14 and body ground individually.
Is there continuity?

YES - Repair short to body ground in the circuit between 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 ).

Fig 2: Checking Continuity Between Audio Unit Connector A (20P) Terminals No. 3, No. 14 & Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.