Mazda CX-9 Grand Touring. Manual — part 161

6. Remove the PLG drive unit.

7. Install in the reverse order of removal.

Fig. 16: View Of PLG Drive Unit Connector & Torque Specifications
Courtesy of MAZDA MOTORS CORP.

POWER LIFTGATE (PLG) CONTROL MODULE REMOVAL/INSTALLATION

1. Disconnect the negative battery cable.

2. Remove the following parts:

1. Trunk box (See TRUNK BOX REMOVAL/INSTALLATION .)

2. Seat side box (LH) (See SEAT SIDE BOX REMOVAL/INSTALLATION .)

3. Trunk end trim (See TRUNK END TRIM REMOVAL/INSTALLATION .)

4. Third-row seat (See THIRD-ROW SEAT REMOVAL/INSTALLATION .)

5. Third-row seat belt lower anchor installation bolt (LH) (See THIRD-ROW SEAT BELT

REMOVAL/INSTALLATION .)

6. Trunk side trim (LH) (See TRUNK SIDE TRIM REMOVAL/INSTALLATION .)

3. Disconnect the PLG control module connector.

4. Remove the bolts.

5. Remove the PLG control module.

6. Install in the reverse order of removal.

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Doors and Liftgate - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:45:23 AM

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Fig. 17: Identifying PLG Control Module, Connector & Torque Specifications
Courtesy of MAZDA MOTORS CORP.

POWER LIFTGATE (PLG) CONTROL MODULE INSPECTION

1. Measure the PLG control module terminal voltage.

2. If there is large difference between the measured value and the value in the terminal voltage table, inspect

the parts under "Inspection item(s)" and related wiring harnesses.



If the system does not work properly even though the inspection items or related wiring harnesses
do not have any malfunction, replace the PLG control module.

Terminal Voltage Table (Reference)

Fig. 18: Identifying PLG Control Module Connector Terminal
Courtesy of MAZDA MOTORS CORP.

CONNECTOR TERMINAL REFERENCE

Terminal

Signal

name

Connected to Measurement condition

Voltage (V)/

Continuity

Inspection item(s)

Closure

After opening the liftgate,



Liftgate latch
and lock
actuator

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Doors and Liftgate - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:45:23 AM

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© 2005 Mitchell Repair Information Company, LLC.

1A

motor
(Closed)

Closure motor

operate the closure motor
with the liftgate half-
closed

0 --> B+ --> 0



Latch
position
switch



Closure
motor

1B

Closure
motor
(Open)

Closure motor

Open the fully closed
liftgate by hand

0 --> B+ --> 0



Liftgate latch
and lock
actuator



Latch
position
switch



Closure
motor



Liftgate outer
handle switch

1C

Power
supply

PLG 20 A fuse Under any condition

B+

PLG 20 A fuse

1D

GND

Body ground

Under any condition

1.0 or less



Related wiring
harnesses

1E

PLG motor
(Open)

PLG motor

Open the fully closed
liftgate

0 --> B+ --> 0 PLG drive unit

1F

PLG motor
(Closed)

PLG motor

Close the fully opened
liftgate

0 --> B+ --> 0 PLG drive unit

2A

IG1

METER 10 A
fuse

Ignition switch is at ON
position

B+

METER 10 A fuse

Ignition switch is at LOCK
or ACC position

1.0 or less

2B

PLG rear
switch
signal

PLG rear
switch

When operating the PLG
rear switch

B+

PLG rear switch

When not operating the
PLG rear switch

1.0 or less

2C

PLG buzzer
output

PLG buzzer

When the PLG buzzer is
sounding

B+

PLG buzzer

Other

1.0 or less

2D

PLG touch
sensor GND

Body ground

Under any condition

1.0 or less



Related wiring
harnesses

2G

Clutch
output (-)

PLG clutch

When PLG is open or
closing

1.0 or less

PLG drive unit

Other

No Continuity

2I

Clutch
output (+)

PLG clutch

When PLG is open or
closing

B+

PLG drive unit

Other

1.0 or less

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Doors and Liftgate - Mazda CX-9

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© 2005 Mitchell Repair Information Company, LLC.

2J

PLG motor
rotation
signal A

Rotation
sensor

Pulse signal

-

PLG drive unit

2K

Rotation
signal power
source

Rotation
sensor

Under any condition

5

PLG drive unit

2L

PLG motor
rotation
signal B

Rotation
sensor

Pulse signal

-

PLG drive unit

2N

Rotation
sensor GND

Body ground

Under any condition

1.0 or less



Related wiring
harnesses

2O

Power
supply

BCM

Under any condition

B+

BCM

3A

PLG touch
sensor
signal (RH)

PLG touch
sensor (RH)

When sensor is operating
normally (usually)

0.5-4.2 or less

PLG touch sensor
(RH)

When sensor is at fault

Other than
those above

3B

PLG touch
sensor
signal (LH)

PLG touch
sensor (LH)

When sensor is operating
normally (usually)

0.5-4.2 or less

PLG touch sensor
(LH)

When sensor is at fault

Other than
those above

3C

Lock signal

Passenger seat
side lock link
switch

Passenger seat side door is
locked. Check the
continuity with earth

Continuity

Passenger seat side
lock link switch

Passenger seat side door is
unlocked. Check the
continuity with earth

No Continuity

3E

Motor return
signal

Return switch

After opening the liftgate,
operate the closure motor
with the liftgate half-
closed

1.0 or less



Liftgate latch
and lock
actuator



Return
switch

3F

Liftgate
latch switch
signal

Liftgate latch
switch

Liftgate is open (liftgate
latch switch is ON)

1.0 or less

Liftgate latch and lock
actuator

Liftgate is closed (liftgate
latch switch is OFF)

B+

3G

Full latch
switch

Latch position
switch

After opening the liftgate,
operate the closure motor
with the liftgate half-
closed

1.0 or less -->

B+ --> 1.0 or

less



Liftgate latch
and lock
actuator



Latch
position
switch



Closure

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES Doors and Liftgate - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:45:23 AM

Page 18

© 2005 Mitchell Repair Information Company, LLC.