Mazda CX-9 Grand Touring. Manual — part 534

DIAGNOSTIC PROCEDURE

DTC B241A - DIAGNOSTIC PROCEDURE

CONDITION

more.

POSSIBLE CAUSE



Short to GND in wiring harness between PLG control module terminal 3A and
PLG touch sensor (RH) terminal B



Short to GND in wiring harness between PLG control module terminal 3B and
PLG touch sensor (LH) terminal B



PLG touch sensor malfunction



PLG control module malfunction

STEP

INSPECTION

ACTION

1

INSPECT PLG TOUCH SENSOR



Inspect the PLG touch sensor.

(See POWER LIFTGATE (PLG)
TOUCH SENSOR
INSPECTION .)



Is the touch sensor normal?

Yes Go to the next step.

No

Replace the PLG touch sensor.

(See POWER LIFTGATE (PLG) TOUCH

SENSOR REMOVAL/INSTALLATION .)

Go to Step 3.

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 12

© 2005 Mitchell Repair Information Company, LLC.

DTC B266A [POWER LIFTGATE (PLG) SYSTEM]

DTC B266A - DETECTION CONDITION POSSIBLE CAUSE CHART

2

INSPECT THE FOLLOWING
WIRING HARNESSES



Disconnect the PLG control module
connector.



Disconnect the PLG touch sensor
connector.



Inspect for a short circuit to ground
system between the following
wiring harnesses:



PLG control module terminal
3A and PLG touch sensor
(RH) terminal B



PLG control module terminal
3B and PLG touch sensor
(LH) terminal B



Is the wiring harness normal?

Yes Go to the next step.

No

Repair or replace the wiring harness.

Go to the next step.

3

VERIFY CORRECTION
COMPLETED



Reconnect the disconnected
connector.



Clear the DTC.



Is DTC B241A stored after 5 min
or more have elapsed?

Yes

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

No

DTC troubleshooting completed.

DTC B266A

Rotation sensor circuit malfunction

DETECTION

CONDITION

A short circuit to ground in the PLG drive unit (rotation sensor) continues for 5 min
or more.

POSSIBLE CAUSE



Short to GND in wiring harness between PLG control module terminal 2K and
PLG drive unit terminal E



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 13

© 2005 Mitchell Repair Information Company, LLC.

DIAGNOSTIC PROCEDURE

DTC B266A - 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 14

© 2005 Mitchell Repair Information Company, LLC.

DTC B266B [POWER LIFTGATE (PLG) SYSTEM]

DTC B266B - 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 2K and
PLG drive unit terminal E for a short
circuit to ground system.

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.



Is DTC B266A stored after 5 min or
more have elapsed?

Yes

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

No

DTC troubleshooting completed.

DTC B266B

Rotation sensor A circuit malfunction

DETECTION

CONDITION

Rotation sensor A signal does not change

POSSIBLE

CAUSE



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



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



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 15

© 2005 Mitchell Repair Information Company, LLC.