Mazda CX-9 Grand Touring 2009 Manual page 1512

Fig. 15: Identifying Rear Door Speaker Components
Courtesy of MAZDA MOTORS CORP.
5. Install in the reverse order of removal.
REAR DOOR SPEAKER INSTALLATION NOTE
1. Remove the speaker with the wiring harness passing through the groove of the rear door module.
CAUTION:
REAR DOOR SPEAKER INSPECTION
1. Verify the resistance between rear door speaker terminals.
If the resistance is not within the specification, replace the rear door speaker.
Resistance
Standard: 4 ohms
Bose®: 2 ohms
2. Connect a 1.5 V battery to the rear door speaker and verify that noise is heard from the rear door speaker.
If no noise is heard, replace the rear door speaker.
2008 Mazda CX-9 Grand Touring
2008 BODY & ACCESSORIES Entertainment - Mazda CX-9
If the speaker is installed with the wiring harness out of the
groove, an open circuit in the wiring harness could occur.
Fig. 16: Identifying Rear Door Module & Wiring Harness
Courtesy of MAZDA MOTORS CORP.