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 and erase the DTCs and any liftgate inhibitors.
2. Turn the ignition off, wait 10 seconds, then cycle the ignition on.
3. Operate the liftgate several times.
4. With the scan tool, read the Active DTCs.
  Does the scan tool display; B1886-12-LIFTGATE PINCH SENSOR - CIRCUIT SHORT TO BATTERY?
  
  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 correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Q901) LOGIC GROUND OPEN

Fig 1: Checking Logic Ground Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Left Liftgate Pinch Sensor harness connector.
3. Measure the resistance of the (Q901) Logic Ground circuit in the Left Pinch Sensor harness connector.
  Is the resistance below 5 Ohms?
  
  Yes
  - Go To 3.
  No
  - Repair the (Q901) Logic Ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
LEFT PINCH SENSOR OPEN

Fig 2: Checking Left Pinch Sensor For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the Left Pinch Sensor in the Component Side connector.
  NOTE:
  The graphic shows the harness side - component side is the mate connector of the pinch sensor.
  
  Is the resistance between 9K and 11K Ohms?
  
  Yes
  - Go To 4.
  No
  - Replace the Left Pinch Sensor in accordance with the Service Information. Refer to SENSOR, PINCH, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT OPEN

Fig 3: Checking Left Pinch Sensor Signal Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition on.
2. Measure the voltage between the (Q901) Logic Ground circuit and the (Q75) Left Pinch Sensor Signal circuit in the Left Pinch Sensor harness connector.
  Is the voltage below 4.5 volts?
  
  Yes
  - Go To 5.
  No
  - Go To 6.
(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT OPEN

Fig 4: Checking Left Pinch Sensor Signal Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C2 harness connector.
3. Measure the resistance of the (Q75) Left Pinch Sensor Signal circuit between the Power Liftgate Module C2 connector and the Left Liftgate Pinch Sensor connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Power Liftgate Module in accordance with the Service Information. Refer to MODULE, POWER LIFTGATE CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the (Q75) Left Pinch Sensor Signal circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE

Fig 5: Checking Left Pinch Sensor Signal Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the voltage between the (Q901) Logic Ground circuit and the (Q75) Left Pinch Sensor Signal circuit.
  Is the voltage above 4.5 volts?
  
  Yes
  - Go To 7.
  No
  - Replace the Left Liftgate Pinch Sensor in accordance with the Service Information. Refer to SENSOR, PINCH, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Q75) LEFT PINCH SENSOR SIGNAL WIRE SHORTED TO VOLTAGE

Fig 6: Checking Left Pinch Sensor Signal Wire For Short To Voltage
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Power Liftgate Module C2 harness connector.
2. Measure the voltage between ground and the (Q75) Left Pinch Sensor Signal circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (Q75) Left Pinch Sensor Signal circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Power Liftgate Module in accordance with the Service Information. Refer to MODULE, POWER LIFTGATE CONTROL, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .