Diagnostic Test

NOTE: The vehicle should be at room temperature when this test is performed

DIAGNOSTIC TROUBLE CODE (DTC) PRESENT
1. Using the scan tool, record DTCs and any liftgate inhibitors.
2. Erase DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. Operate the liftgate several times.
5. Using the scan tool, read DTCs.
  Does the scan tool display B1948-POWER LIFTGATE PINCH SENSOR 2 CIRCUIT HIGH?
  
  Yes
  - Go to step 2
  No
  - Using the SYSTEM WIRING DIAGRAMS as a guide, inspect the wiring and connectors for an intermittent condition.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
(Q901) LOGIC GROUND OPEN

Fig 1: Checking Logic Ground Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Right Liftgate Pinch Sensor connector.
3. Measure the resistance between ground and the (Q901) Logic Ground circuit.
  Is the resistance below 9.5 Ohms?
  
  Yes
  - Go to step 3
  No
  - Repair the (Q901) Logic Ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
(Q78) RIGHT PINCH SENSOR SIGNAL CIRCUIT OPEN

Fig 2: Checking Right Pinch Sensor Signal Circuit Open
Courtesy of CHRYSLER LLC
1. Turn the ignition on.
2. Measure the voltage between the (Q901) Logic Ground circuit and the (Q78) Right Pinch Sensor Signal circuit.
  Is the voltage below 5.3 Volts?
  
  Yes
  - Go to step 4
  No
  - Go to step 5
CHECK THE (Q78) RIGHT PINCH SENSOR SIGNAL CIRCUIT FOR AN OPEN

Fig 3: Checking Right Pinch Sensor Signal Circuit For An Open
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C2 harness connector.
3. Measure the resistance of the (Q78) Right Pinch Sensor Signal circuit between the Power Liftgate Module C2 harness connector and the Right Liftgate Pinch Sensor harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Replace the Power Liftgate Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Repair the (Q78) Right Pinch Sensor Signal circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
(Q78) RIGHT PINCH SENSOR SIGNAL SHORT TO VOLTAGE

Fig 4: Checking Right Pinch Sensor Signal Circuit Open
Courtesy of CHRYSLER LLC
1. Measure the voltage between the (Q901) Logic Ground circuit and the (Q78) Right Pinch Sensor Signal circuit in the Right Liftgate Pinch Sensor connector.
  Is the voltage above 5.2 Volts?
  
  Yes
  - Repair the (Q78) Right Pinch Sensor Signal circuit for a short to voltage. If the (Q78) Right Pinch Sensor Signal circuit is OK, replace the Power Liftgate Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Replace the Right Liftgate Pinch Sensor in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .