Audio Control Switch Inspection

WARNING: This page is about a different car, the 2010 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable and wait for 1 min or more.
Remove the driver-side air bag module. (See DRIVER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION .)
Remove the steering wheel. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
Verify the resistance and continuity between the audio control switch terminals.

Fig 1: Audio Control Switch Chart
Courtesy of MAZDA MOTORS CORP.
- If the resistance and continuity are not as indicated in the tables, replace the audio control switch.
Fig 2: Audio Control Switch Chart
Courtesy of MAZDA MOTORS CORP.
Apply battery positive voltage to audio control switch terminal E, and connect terminal D to ground.
Verify that the LED illuminates.
- If the LED does not illuminate, replace the audio control switch.
Fig 3: Identifying Audio Control Switch Connector Terminal
Courtesy of MAZDA MOTORS CORP.