Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

DTC PRESENT
1. With the scan tool, record the DTCs and any liftgate inhibitors.
2. Erase the DTCs.
3. Cycle the ignition off, wait 10 seconds, then cycle the ignition on.
4. Operate the liftgate several times.
5. With the scan tool, read the Active DTCs.
  Does the scan tool display; B1964-11-POWER LIFTGATE SENSOR SUPPLY - CIRCUIT SHORT TO GROUND?
  
  Yes
  - Go To 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and poor pin fit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
POWER LIFTGATE DRIVE UNIT

Fig 1: Power Liftgate Drive Unit Connector End View
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect and inspect the Power Liftgate Drive Unit harness connector. Clean and repair if necessary and repeat step 1. If the connector is okay, continue testing.
2. Erase the DTCs.
3. Cycle the ignition off, wait 10 seconds, then cycle the ignition on.
4. With the scan tool, read the Active DTCs.
  Does the scan tool display; B1964-11-POWER LIFTGATE SENSOR SUPPLY - CIRCUIT SHORT TO GROUND?
  
  Yes
  - Go To 3
  No
  - Replace the Power Liftgate Drive Unit in accordance with the service information. Refer to DRIVE UNIT, POWER, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Q203) POSITION SENSOR SUPPLY CIRCUIT SHORTED TO GROUND

Fig 2: Checking Position Sensor Supply Circuit For Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Cycle the ignition off.
2. Disconnect the Power Liftgate Module C1 harness connector.
3. Measure the resistance between ground and the (Q203) Position Sensor Supply circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Replace the Power Liftgate Module in accordance with service information. Refer to MODULE, POWER LIFTGATE CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (Q203) Position Sensor Supply circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .