Woofer Inspection

Remove the driver-side rear speaker.
Inspect the rear speakers, to the Rear Speaker Inspection. (See REAR SPEAKER INSPECTION .)
Disconnect the woofer connector.
Inspect continuity between the rear speaker terminals and the woofer terminals using an ohmmeter.
- If not as specified, replace the related wiring harnesses.
  
  Fig 1: Rear Speaker/Woofer Continuity Specifications
  Courtesy of MAZDA MOTORS CORP.
  
  Fig 2: Identifying Rear Speaker/Woofer Connector Terminals
  Courtesy of MAZDA MOTORS CORP.
Verify that there is battery positive voltage at woofer connector terminal H using a voltmeter.
- If not as specified, replace the related wiring harnesses.
Inspect continuity between woofer connector terminal J and body ground using an ohmmeter.
- If not as specified, replace the related wiring harnesses.