Audio Control Switch Inspection

WARNING: This page is about a different car, the 2008 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable.
Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION .)
Disconnect the audio control switch connector.
Verify the resistance and continuity between the audio control switch terminals.
- If the resistance and continuity are not as indicated in Fig 1, replace the audio control light switch.
  
  Fig 1: Audio Control Switch Resistance Chart
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Inspecting Audio Control Switch Connector Terminals
  Courtesy of MAZDA MOTORS CORP.

R: : Resistance. See SWITCH POSITION RESISTANCE (OHM) SPECIFICATION .

SWITCH POSITION & RESISTANCE SPECIFICATION

Switch position	Resistance (ohm)
VOL - switch ON	51-56
VOL+ switch ON	140-154
SEEK+ switch ON	286-315>
SEEK - switch ON	534-589
MODE switch ON	985-1,080
MUTE switch ON	1,940-2,130
OFF	4,800-5,290