Diagnostic Procedure

AUTO CLOSURE DOES NOT OPERATE (POWER LIFTGATE (PLG) SYSTEM) DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	POWER LIFTGATE (PLG) TOUCH SENSOR INSPECTION Visually inspect the power liftgate (PLG) touch sensor for the following. Dirt Adhered foreign matter Is there dirt or foreign matter on the power liftgate (PLG) touch sensor?	Yes	Remove dirt or foreign matter, then go to the next step.
1		No	Go to the next step.
2	VERIFY IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN POWER LIFTGATE (PLG) CONTROL MODULE AND LIFTGATE LATCH AND LOCK ACTUATOR Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .) Disconnect the power liftgate (PLG) control module connector. Disconnect the liftgate latch and lock actuator connector. Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side). Power liftgate (PLG) control module terminal 2J and liftgate latch and lock actuator terminal A Power liftgate (PLG) control module terminal 2G and liftgate latch and lock actuator terminal B Is there continuity?	Yes	Go to the next step.
2		No	Repair or replace the wiring harness which has an open circuit. After performing the repair, go to Step 4.
3	VERIFY IF MALFUNCTION CAUSE IS SHORT TO GROUND IN WIRING HARNESS BETWEEN POWER LIFTGATE (PLG) CONTROL MODULE AND LIFTGATE LATCH AND LOCK ACTUATOR Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .) Disconnect the power liftgate (PLG) control module connector. Inspect the wiring harness for continuity between the following terminals (vehicle wiring harness side). Power liftgate (PLG) control module terminal 2J and ground Power liftgate (PLG) control module terminal 2G and ground Is there continuity?	Yes	Repair or replace the wiring harness which is shorted to ground. After performing the repair, go to Step 4.
3		No	Go to the next step.
4	DETERMINE IF MALFUNCTION CAUSE IS POWER LIFTGATE (PLG) CONTROL MODULE OR LIFGTAGE LATCH AND LOCK ACTUATOR Inspect the liftgate latch and lock actuator. (See LIFTGATE LATCH AND LOCK ACTUATOR INSPECTION .) Is the liftgate latch and lock actuator normal?	Yes	Replace the power liftgate (PLG) control module, then go to the next step. (See POWER LIFTGATE (PLG) CONTROL MODULE REMOVAL/INSTALLATION .)
4		No	Replace the liftgate latch and lock actuator, then go to the next step. (See LIFTGATE LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION .)
5	VERIFY IF MALFUNCTION CAUSE IS CORRECTED Has the malfunction symptom been eliminated?	Yes	Troubleshooting completed. (Explain the contents of the servicing to the customer.)
5		No	If the malfunction has not been resolved, repeat the inspection from Step 1.