Mazda CX-9 Grand Touring 2009 Manual page 2136

2008 BODY & ACCESSORIES On-Board Diagnostic (Power Liftgate (PLG) System) - Mazda CX-9
Disconnect the PLG control module
connector.
Disconnect the PLG drive unit
connector.
1
Inspect the wiring harness between
PLG control module terminal 2K and
PLG drive unit terminal E for a short
circuit to ground system.
VERIFY CORRECTION COMPLETED
Reconnect the disconnected connector.
2
Clear the DTC.
Is DTC B266A stored after 5 min or
more have elapsed?
DTC B266B [POWER LIFTGATE (PLG) SYSTEM]
DTC B266B - DETECTION CONDITION POSSIBLE CAUSE CHART
DTC B266B Rotation sensor A circuit malfunction
DETECTION
Rotation sensor A signal does not change
CONDITION
POSSIBLE
CAUSE
2008 Mazda CX-9 Grand Touring
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
(See POWER LIFTGATE (PLG) DRIVE
UNIT REMOVAL/INSTALLATION .)
Yes
Go to the next step.
Repair or replace the wiring harness.
No
Go to the next step.
Replace the PLG control module.
(See POWER LIFTGATE (PLG)
Yes
CONTROL MODULE
REMOVAL/INSTALLATION .)
No DTC troubleshooting completed.