Diagnostic Test

DIAGNOSTIC TROUBLE CODE (DTC) PRESENT
1. Using the scan tool, record DTCs.
2. Erase DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. Operate the liftgate several times from the overhead switch.
5. Using the scan tool, read DTCs.
  Does the scan tool display B18E3-POWER LIFTGATE FRONT ZONE SWITCH CIRCUIT LOW?
  
  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 .
LIFTGATE RELEASE SWITCH SHORTED

Fig 1: Checking Liftgate Release Switch Shorted
Courtesy of CHRYSLER LLC

NOTE: Vehicles equipped with a sunroof have the Power Liftgate Switch integrated into the Sunroof Switch Assembly. The graphic shows switch connectors for vehicles with and without sunroof.
1. Disconnect the Overhead Liftgate Release Switch harness connector.
2. Erase DTCs.
3. Turn the ignition off, wait 10 seconds, then turn the ignition on.
4. Using the scan tool, read DTCs.
  Does the scan tool display B18E3-POWER LIFTGATE FRONT ZONE SWITCH CIRCUIT LOW?
  
  Yes
  - Go to step 3
  No
  - Replace the Overhead Liftgate Switch assembly in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
(G25) LIFTGATE SWITCH SENSE CIRCUIT SHORT TO THE (Q901) LOGIC GROUND CIRCUIT

Fig 2: Checking Liftgate Switch Sense Circuit Short To Logic Ground Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C2 harness connector.
3. Measure the resistance between the (Q901) Logic Ground circuit and the (G25) Liftgate Switch Sense circuit.
  Is the resistance below 1, 000 Ohms?
  
  Yes
  - Repair the (G25) Liftgate Switch Sense circuit for a short to the (Q901) Logic Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Go to step 3
(G25) LIFTGATE SWITCH SENSE CIRCUIT SHORT TO GROUND

Fig 3: Checking Liftgate Switch Sense Circuit Short To Ground
Courtesy of CHRYSLER LLC
1. Measure the resistance between ground and the (G25) Liftgate Switch Sense circuit.
  Is the resistance below 10, 000 Ohms?
  
  Yes
  - Repair the (G25) Liftgate Switch Sense circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - 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 .