Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR ACTIVE DTCS
1. Cycle the ignition on.
2. With the scan tool, read Power Liftgate Module DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
VERIFY BCM IS ACTIVE ON THE CAN BUS
1. With the scan tool, select ECU View.
2. Verify that the BCM is active on the bus.
  Is the BCM active on the bus?
  
  Yes
  - Go To 3
  No
  - Refer to NO RESPONSE FROM BCM (BODY CONTROL MODULE) and perform the No Response from BCM diagnostic procedure.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
DTCS STORED OR ACTIVE IN THE BCM
1. With the scan tool, read BCM DTCs.
  Are any DTCs active or stored in the BCM?
  
  Yes
  - Refer to BODY CONTROL MODULE (BCM) - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
  No
  - Replace and program the Power Liftgate Module in accordance with the Service Information. Refer to MODULE, POWER LIFTGATE CONTROL (PLGM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .