Mazda CX-9 Grand Touring. Manual — part 535

DIAGNOSTIC PROCEDURE

DTC B266B - DIAGNOSTIC PROCEDURE

STEP

INSPECTION

ACTION

INSPECT WIRING HARNESS BETWEEN
PLG CONTROL UNIT AND PLG DRIVE
UNIT

Replace the PLG drive unit.

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES On-Board Diagnostic (Power Liftgate (PLG) System) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:46:08 AM

Page 16

© 2005 Mitchell Repair Information Company, LLC.

DTC B266C [POWER LIFTGATE (PLG) SYSTEM]

DTC B266C - DETECTION CONDITION POSSIBLE CAUSE CHART

1



Disconnect the PLG control module
connector.



Disconnect the PLG drive unit connector.



Inspect the wiring harness between PLG
control module terminal 2J and PLG drive
unit terminal F for an open circuit/short
circuit to power supply system/short
circuit to ground system.



Is the wiring harness normal?

Yes

(See POWER LIFTGATE (PLG) DRIVE
UNIT REMOVAL/INSTALLATION .)
Go to the next step.

No

Repair or replace the wiring harness.

Go to the next step.

2

VERIFY CORRECTION COMPLETED



Reconnect the disconnected connector.



Clear the DTC.



Operate the PLG system.



Is DTC B266B stored?

Yes

Replace the PLG control module.
(See POWER LIFTGATE (PLG)
CONTROL MODULE
REMOVAL/INSTALLATION .)

No

DTC troubleshooting completed.

DTC B266C

Rotation sensor B circuit malfunction

DETECTION

CONDITION

Rotation sensor B signal does not change

POSSIBLE

CAUSE



Open circuit in wiring harness between PLG control module terminal 2L and PLG
drive unit terminal J Short to power supply in wiring harness between PLG control
module terminal 2L and PLG drive unit terminal J



Short to GND in wiring harness between PLG control module terminal 2L and PLG
drive unit terminal J



Rotation sensor malfunction



PLG control module malfunction

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES On-Board Diagnostic (Power Liftgate (PLG) System) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:46:08 AM

Page 17

© 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE

DTC B266C - DIAGNOSTIC PROCEDURE

STEP

INSPECTION

ACTION

INSPECT WIRING HARNESS BETWEEN
PLG CONTROL UNIT AND PLG DRIVE
UNIT

Replace the PLG drive unit.

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES On-Board Diagnostic (Power Liftgate (PLG) System) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:46:08 AM

Page 18

© 2005 Mitchell Repair Information Company, LLC.

DTC B266E [POWER LIFTGATE (PLG) SYSTEM]

DTC B266E - DETECTION CONDITION POSSIBLE CAUSE CHART

1



Disconnect the PLG control module
connector.



Disconnect the PLG drive unit connector.



Inspect the wiring harness between PLG
control module terminal 2L and PLG drive
unit terminal J for an open circuit/short
circuit to the power supply system/short
circuit to the ground system.



Is the wiring harness normal?

Yes

(See POWER LIFTGATE (PLG)
DRIVE UNIT
REMOVAL/INSTALLATION .)
Go to the next step.

No

Repair or replace the wiring harness.

Go to the next step.

2

VERIFY CORRECTION COMPLETED



Reconnect the disconnected connector.



Clear the DTC.



Operate the PLG system.



Is DTC B266C stored?

Yes

Replace the PLG control module.
(See POWER LIFTGATE (PLG)
DRIVE UNIT
REMOVAL/INSTALLATION .)

No

DTC troubleshooting completed.

DTC B266E

Rotation sensor malfunction

DETECTION

CONDITION

The PLG operation direction (open/close) and the PLG motor rotation direction from
the rotation sensor do not correspond.

POSSIBLE CAUSE



PLG arm malfunction



PLG slider malfunction



Torque cable malfunction



Reverse connection of the PLG motor



PLG drive unit (rotation sensor) malfunction



PLG control module malfunction

2008 Mazda CX-9 Grand Touring

2008 BODY & ACCESSORIES On-Board Diagnostic (Power Liftgate (PLG) System) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:46:08 AM

Page 19

© 2005 Mitchell Repair Information Company, LLC.