Power Liftgate Input - Output Table

INPUT	NORMAL READINGS
	FULLY CLOSED AND LATCHED	FULLY OPEN	BETWEEN FULLY OPEN AND CLOSED	DESCRIPTION
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.
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 Lift Gate Module (PLGM) will reverse direction of the latch until the switch is Open .
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 PLGM the speed and distance of liftgate travel. These inputs are also used by the PLGM to sense obstacles encountered by the liftgate.
POSITION SENSOR PULSE COUNTS	100	1600 TO 1800	100 TO 1600	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 FULL OPEN SWITCH POSITION COUNTS	ABOUT 1600	ABOUT 1600	ABOUT 1600	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 PDU.

INPUT	NORMAL (NOT PRESSED)	PRESSED	DESCRIPTION
LEFT PINCH SENSOR	About 4.1 Volts (10 Kilohms)	Less than 1 Volt	Pinch sensor reads 10 kilohms when not pinched. When pinched, shorts out the 10 kilohm resistor and should read from 0 to about 200 ohms.
RIGHT PINCH SENSOR	About 1.7 Volts at 21° C (70° F)	Less than 1 Volt	Right pinch sensor has a 10 kilohm 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 about 200 ohms.
EXTERIOR HANDLE SWITCH	5 Volts (Normally Open)	About 3.4 Volts (4.7 Kilohms)	Located in the liftgate latch. Open circuit when not active. 4.7 kilohms to ground when handle is activated.
OVERHEAD CONSOLE SWITCH	About 4.7 Volts	About 3.4 Volts	When not pressed, should read about 810 kilohms. When pressed, should read about 4.7 kilohms.
D-PILLAR (REAR ZONE) SWITCH	About 4.7 Volts	About 3.4 Volts	When not pressed, should read about 810 kilohms. When pressed, should read about 4.7 kilohms.

OUTPUT	DESCRIPTION	DIAGNOSE
HALL EFFECT POWER	Provides +5 Volts to the Hall sensors in the PDU	As long as the PLGM is awake it should read approximately +5 volts.
LATCH MOTOR	Provides +/- 12 Volts to latch motor for cinch and release	Actuate with diagnostic 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 information for specific harness and connector pinout information.
DRIVE MOTOR	Provides +/- 12 Volts to PDU for power Open or Close	Actuate with diagnostic 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 information for specific harness and connector pinout information.
CHIME	Provides signal to output sound	Actuate with diagnostic scan tool. While monitoring with a digital multimeter some activity should be present, but not much voltage.