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. If possible, operate the liftgate several times.
5. Using the scan tool, read DTCs.
  Does the scan tool display B1893-POWER LIFTGATE CONTROL CIRCUIT 2 OPEN?
  
  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 .
POWER LIFTGATE MODULE

Fig 1: Checking Power Liftgate Module
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Power Liftgate Module C1 connector.
3. Measure the resistance between the (Q88) Liftgate Open Driver circuit and the (Q89) Liftgate Close Driver circuit
  Is the resistance approximately 4.3 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
  - Go to step 3
(Q89) LIFTGATE CLOSE DRIVER CIRCUIT OPEN

Fig 2: Checking Liftgate Close Driver Circuit Open
Courtesy of CHRYSLER LLC
1. Disconnect the Power Liftgate Drive Unit connector.
2. Measure the resistance of the (Q89) Liftgate Close Driver circuit between the Power Liftgate C1 harness connector and the Power Liftgate Drive Unit harness connector.
  Is the resistance below 5.0 Ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the (Q89) Liftgate Close Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
(Q88) LIFTGATE OPEN DRIVER CIRCUIT OPEN

Fig 3: Checking Liftgate Open Driver Circuit Open
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (Q88) Liftgate Open Driver circuit between the Power Liftgate C1 harness connector and the Power Liftgate Drive Unit 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 (Q88) Liftgate Open Driver circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .