Diagnostic Test

WARNING: This page is about a different car, the 2012 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.
2. Turn the ignition off, wait 10 seconds, then turn the ignition on.
3. If possible, operate the liftgate several times.
4. With the scan tool, read the Active DTCs.
  Does the scan tool display; B188C-13-LIFTGATE CONTROL CIRCUIT 1 - CIRCUIT OPEN?
  
  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 MODULE

Fig 1: Checking Liftgate Open Driver Circuit For Short To Liftgate Close Driver Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C1 harness connector.
3. Measure the resistance between the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit.
  NOTE:
  Be sure to use an accurate DVOM in the following step. Zero the meter before beginning.
  
  Is the resistance approximately 0.5 of an Ohm?
  
  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
  - Go To 3.
(Q88) LIFTGATE OPEN DRIVER CIRCUIT OPEN

Fig 2: Checking Liftgate Open Driver Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Power Liftgate Drive Unit harness connector.
2. Measure the resistance of the (Q88) Liftgate Open Driver circuit between the PLG C1 connector and the PLG Drive Unit connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - Go To 4.
  No
  - Repair the (Q88) Liftgate Open Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(Q89) LIFTGATE CLOSE DRIVER CIRCUIT OPEN

Fig 3: Checking Liftgate Close Driver Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance of the (Q89) Liftgate Close Driver circuit between the PLG C1 connector and the PLG Drive Unit connector.
  Is the resistance below 2.0 Ohms?
  
  Yes
  - 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 .
  No
  - Repair the (Q89) Liftgate Close Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .