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 the DTCs.
2. Erase the DTCs.
3. Cycle the ignition off, wait 10 seconds, then cycle the ignition on.
4. Operate the liftgate several times from the front switch.
5. With the scan tool, read the Active DTCs.
  Does the scan tool display; B18E1-12-POWER LIFTGATE FRONT ZONE SWITCH - 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 .
FRONT POWER LIFTGATE SWITCH SHORTED

Fig 1: Front Power Liftgate Switch Harness Connector End View
Courtesy of CHRYSLER GROUP, LLC
1. Disconnect the Front Power Liftgate Switch harness connector in the overhead console.
2. Erase the DTCs.
3. Cycle the ignition off, wait 15 seconds, then cycle the ignition on.
4. With the scan tool, read the DTCs.
  Does the scan tool display; B18E1-12-POWER LIFTGATE FRONT ZONE SWITCH - CIRCUIT SHORT TO BATTERY?
  
  Yes
  - Go To 3.
  No
  - Replace the Front Power Liftgate Switch (Overhead Console) in accordance with the Service Information. Refer to CONSOLE, OVERHEAD, FRONT, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(G25) LIFTGATE RELEASE SWITCH SENSE CIRCUIT SHORTED TO VOLTAGE

Fig 2: Checking Liftgate Release Switch Sense Circuit 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 (G25) Liftgate Release Switch Sense circuit.
  Is there any voltage present?
  
  Yes
  - Repair the (G25) Liftgate Release Switch Sense circuit for a short to voltage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3.
(G25) LIFTGATE RELEASE SWITCH SENSE CIRCUIT OPEN

Fig 3: Checking Liftgate Release Switch Sense Circuit For Open
Courtesy of CHRYSLER GROUP, LLC
1. Cycle the ignition off.
2. Measure the resistance of the (G25) Liftgate Release Switch Sense circuit between the Switch connector and the Power Liftgate C2 harness connector.
  Is the resistance below 2.0 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 (G25) Liftgate Release Switch Sense circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .