Mazda CX-9 Grand Touring 2009 Manual page 649

1. Verify that the continuity between the PLG rear switch terminals is as indicated in the table.
If not as indicated in the table, replace the PLG rear switch.
Fig. 26: PLG Rear Switch Continuity Chart
Courtesy of MAZDA MOTORS CORP.
Fig. 27: PLG Rear Switch - Circuit Diagram
Courtesy of MAZDA MOTORS CORP.
2. Apply battery voltage to PLG rear switch terminal A, and connect terminal B to ground.
3. Verify that the LED illuminates.
If there is any malfunction, replace the PLG rear switch.
POWER LIFTGATE (PLG) BUZZER REMOVAL/INSTALLATION
CAUTION:
1. Disconnect the negative battery cable.
2. Remove the following parts:
1. Liftgate upper trim (See LIFTGATE UPPER TRIM REMOVAL/INSTALLATION .)
2. PLG arm (See POWER LIFTGATE (PLG) DRIVE UNIT REMOVAL/INSTALLATION.)
3. Liftgate side trim (See LIFTGATE SIDE TRIM REMOVAL/INSTALLATION .)
4. Liftgate lower trim (See LIFTGATE LOWER TRIM REMOVAL/INSTALLATION .)
3. Disconnect the PLG buzzer connector.
2008 Mazda CX-9 Grand Touring
2008 BODY & ACCESSORIES Doors and Liftgate - Mazda CX-9
Do not remove the PLG buzzer except when replacing the PLG buzzer
because thread-locking compound has been applied to the screws.