Audio remote switch does not work properly (with navigation)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 Honda Odyssey, 2016 Honda Odyssey, 2015 Honda Odyssey, 2014 Honda Odyssey, and 2013 Honda Odyssey. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

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

Turn the ignition switch to ON (II).
Turn on the audio system and check the audio-navigation unit operation [volume up, volume down, CH (UP), CH (DOWN), MODE].
Is the audio-navigation unit operation OK?

YES -Operation is normal.

NO -Go to step 3.
Do the Audio Remote Switch Test (see AUDIO REMOTE SWITCH TEST ).
Is the audio remote switch OK?

YES -Go to step 4.

NO -Replace the audio remote switch (see AUDIO REMOTE SWITCH TEST ).
Turn the ignition switch to LOCK (0).
Disconnect audio-navigation unit connector A (24P).
NOTE: Eject all the discs before disconnecting the audio-navigation unit to prevent damaging the CD/DVD player's load mechanism.

Reconnect the audio remote switch, and measure the resistance between audio-navigation unit connector A (24P) terminals No. 11 and No. 22 as specified in the table.

Fig 1: Measuring Resistance Between Audio-Navigation Unit Connector A (24P) Terminals No. 11 And No. 22

Courtesy of AMERICAN HONDA MOTOR CO., INC.

AUDIO REMOTE SWITCH TABLE

AUDIO REMOTE SWITCH REFERENCE CHART

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 7.

NO -Repair a short or high resistance in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel (see CABLE REEL REPLACEMENT ).

Disconnect the audio remote switch 12P connector.
Check for continuity between body ground and audio-navigation unit connector A (24P) terminals No. 11 and No. 22 individually.

Fig 2: Checking For Continuity Between Body Ground And Audio-Navigation Unit Connector A (24P) Terminals No. 11 And No. 22
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel (see CABLE REEL REPLACEMENT ).

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