Power Liftgate Input/Output Table

	Normal Reading			Description
Input	Fully Closed and Latched	Fully Open	Between Fully Open and Closed
Primary ratchet/ajar switch closed	False	True	True	Primary/ajar switch, internal to the liftgate latch. Open when latch is in primary; closed when latch is out of primary.
Secondary ratchet switch closed	False	True	True	Internal to the liftgate latch. Indicates when the latch is in secondary position. Open when in secondary position; closed when out of secondary position.
Pawl switch closed	False	True	True	Internal to the liftgate latch. Indicates when the latch pawl has secured the latch in primary or secondary position. Goes open when entering secondary latch; closed when out of secondary and primary.
Sector gear switch closed	False	False	False	Internal to the liftgate latch. Essentially a park switch for the latch. When latch is running a cinch or release, this switch is closed. After cinch or release is complete, the power liftgate module will reverse direction of the latch until the switch is open.
Full open switch closed	False	True	False	Internal to the drive motor. Indicates when the liftgate is a few degrees from full open. Closed when full open; open otherwise.
Position sensor number 1 and number 2 closed	False or True	False or True	False or True	When in motion, these signals will toggle between open and closed. The two signals together tell the power liftgate module the speed and direction of liftgate travel. They are also used to sense obstacles encountered by the liftgate.
Position sensor number 1 pulse counts	0	180 to 200	0 to 200	This is a counter derived from the pulses coming from position sensors number 1 and 2. This count represents total travel of the liftgate (to mechanical end of travel).
Gate position counts	0	165 to 185	0 to 185	This is a counter derived from the pulses coming from position sensors number 1 and 2. This count represents the position of the full open switch in the liftgate drive unit.

>>Input<<	>>Normal/Not Pressed<<		>>Pressed<<	>>Description<<
Left pinch sensor	Approximately 2.5 volts (10K ohms)		Less than 1 volt	Pinch sensor reads 10K ohms when not pinched. When pinched, shorts out the 10K ohm resistor and should read from 0 to approximately 200 ohms.
Right pinch sensor	Approximately 1.7 volts at 70° F		Less than 1 volt	Right pinch sensor has a 10K at room temperature thermistor in place of the resistor. When not pinched, resistance is proportional to the ambient temperature. When pinched, shorts out the thermistor and should read from 0 to approximately 200 ohms.
Handle switch	5 volts (normally open)		Approximately 2.2 volts (4.7K ohms pressed)	Located in the liftgate latch. Open circuit when not active. 4.7K ohms to ground when handle is activated.
Overhead switch	Approximately 4.7 volts		Approximately 2.2 volts	When not pressed, should read about 810K ohms. When pressed, should read about 4.7K ohms.
D-pillar/rear zone switch (if equipped)	Approximately 4.7 volts		Approximately 2.2 volts	When not pressed, should read about 810K ohms. When pressed, should read about 4.7K ohms.

>>Output<<	>>Description<<		>>Diagnose<<
Hall effect power	Provides +5 volts to the hall sensor in drive motor.		As long as module is awake it should read approximately +5 volts.
Latch motor	Provides +/- 12 volts to latch motor for cinch and release.		Actuate with scan tool. Should see positive voltage on the cinch wiring connector terminal for cinch direction. Should see positive voltage on the release wiring connector terminal for release direction. Refer to the appropriate wiring diagrams for specific wiring harness and connector pinout information.
Drive clutch	Provides + 12 volts to clutch in power liftgate drive unit to engage drive mechanism for power open or close.		Actuate with scan tool. Should see approximately 12 volts output.
Drive motor	Provides +/- 12 volts to power liftgate drive unit motor for power open or close.		Actuate with scan tool. Should see positive voltage on the open wiring connector terminal for open direction. Should see positive voltage on the close wiring connector terminal for close direction. Refer to the appropriate wiring diagrams for specific wiring harness and connector pinout information.
Chime	Provides 2000 Hz signal to output sound.		Actuate with scan tool. While monitoring with a digital multi-meter some activity should be present; not much voltage.