Diagnostic Test

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 B1889-POWER LIFTGATE PINCH SENSOR 1 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 Left Liftgate Pinch Sensor harness 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 .
(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT OPEN

Fig 2: Checking Left 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 (Q75) Left Pinch Sensor Signal circuit.
  Is the voltage below 5.3 Volts?
  
  Yes
  - Go to step 4
  No
  - Go to step 5
(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT OPEN

Fig 3: Checking Left Pinch Sensor Signal Circuit 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 (Q75) Left Pinch Sensor Signal circuit between the Power Liftgate Module C2 harness connector and the Left 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 (Q75) Left Pinch Sensor Signal circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
(Q75) LEFT PINCH SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE

Fig 4: Checking Left 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 (Q75) Left Pinch Sensor Signal circuit.
  Is the voltage above 5.2 Volts?
  
  Yes
  - Repair the (Q75) Left Pinch Sensor Signal circuit for a short to voltage. If the (Q75) Left 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 Left Liftgate Pinch Sensor.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .