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 B1963-POWER LIFTGATE STRUT PERFORMANCE?
  
  Yes
  - Go to step 2
  No
  - Make sure there is no intermittent binding or cold weather condition which may have caused this code to set.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
BINDING LIFTGATE
1. Operate the liftgate manually.
  Does the Liftgate bind or stick while opening or closing?
  
  Yes
  - Repair the cause for the binding liftgate.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Go to step 3
CHECK (Q204) POSITION SENSOR SIGNAL 1 AND THE (Q205) POSITION SENSOR SIGNAL 2 CIRCUITS FOR A SHORT TOGETHER

Fig 1: Checking Position Sensor Signal 1 & 2 Circuits For A Short Together
Courtesy of CHRYSLER LLC
1. Inspect the (Q204) Position sensor signal 1 circuit and the (Q205) Position Sensor Signal 2 circuits for a possible short together between the Power Liftgate Module C1 harness connector and the Power Liftgate Drive Unit harness connector.
  Are the circuits shorted at either connector?
  
  Yes
  - Repair the (Q204) Position sensor signal 1 circuit for a short to the (Q205) Position Sensor Signal 2 circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Go to step 4
WEAK STRUTS
1. Check the prop rods to ensure the liftgate will self rise from approximately 1/4 open position.
2. If necessary, compare the effort to open and close the liftgate with a known good vehicle.
  Does the liftgate self rise as it should?
  
  Yes
  - Replace the Power Liftgate Drive Unit 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 Liftgate Prop Rods (struts) in accordance with Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .