Audio Remote Switch Test

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Remove the driver's airbag assembly (see DRIVER'S AIRBAG REPLACEMENT ).
Remove the 20P connector from the cable reel.

Fig 1: Identifying Audio Remote Switch Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Measure the resistance between the No. 19 and No. 20 terminals in each switch position according to the table.

RESISTANCE CHART

Position	Resistance
Switch not pressed	About 10 kΩ
MODE	About 3.7 kΩ
CH (+)	About 1.7 kΩ
CH (-)	About 775 Ω
↑ (VOL. UP)	About 357 Ω
↓ (VOL. DOWN)	About 100 Ω

If the resistance is not as specified, replace the audio remote switch (see STEERING WHEEL DISASSEMBLY/REASSEMBLY ).
Use a diode tester between the terminals in each switch position according to Fig 2.

Fig 2: Using Diode Tester Between Terminals In Each Switch Position
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the diode test is not as specified, replace the audio remote switch (see STEERING WHEEL DISASSEMBLY/REASSEMBLY ).