POWER LIFTGATE (PLG) CONTROL MODULE INSPECTION

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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)

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Terminal	Signal name	Connected to	Measurement condition	Voltage (V)/Continuity	Inspection item(s)
1A	Closure motor (Closed)	Closure motor	After opening the liftgate, operate the closure motor with the liftgate half-closed	0 → B+→ 0	•  Liftgate latch and lock actuator ―  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	P.LIFT GATE 20 A fuse	Under any condition	B+	P.LIFT GATE 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-B 7.5 A fuse	Ignition switch is at ON position	B+	METER-B 7.5 A fuse
			Ignition switch is at OFF 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
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-side door locked	1.0 or less	Passenger seat side lock link switch
			Passenger-side door unlocked	Wave pattern (See Pattern 1.)
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 motor
3H	Half latch switch	Latch position switch	After opening the liftgate, operate the closure motor with the liftgate half-closed	1.0 or less→ B+	•  Liftgate latch and lock actuator ―  Latch position switch ―  Closure motor
3N*1	Unlock signal	Passenger seat side lock link switch	Passenger-side door locked	Wave pattern (See Pattern 2.)	Passenger seat side lock link switch
			Passenger-side door unlocked	1.0 or less
3O	Liftgate outer handle switch signal	Liftgate outer handle switch	When operating the liftgate outer handle (When the liftgate outer handle switch is ON)	B+	Liftgate outer handle switch
			When not operating the liftgate outer handle (When the liftgate outer handle switch is OFF)	1.0 or less
3Q	PLG front switch signal (Input)	PLG front switch	PLG front switch: Switch is at ON	B+	PLG front switch
			PLG front switch: Switch is at OFF	1.0 or less
3R	Power supply to PLG switches	PLG switch	PLG front switch: Open or close switch is at ON	1.0 or less	PLG control module
			PLG front switch: Open or close switch is at OFF	B+
3U	CAN_L	-	Because this terminal is for communication, good/no good judgment by terminal voltage is not possible		-
3V	CAN_H	-	Because this terminal is for communication, good/no good judgment by terminal voltage is not possible		-

Generated pulse (reference)

Pattern 1

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•  Terminal: 3C (+) ↔ body ground (-)

•  Oscilloscope setting: 2 V/DIV (Y), 1 ms/DIV (X), DC range

Pattern 2

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•  Terminal: 3N (+) ↔ body ground (-)

•  Oscilloscope setting: 1 V/DIV (Y), 1 ms/DIV (X), DC range