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Home >> Dodge and Ram >> 2019 >> Durango SXT Plus, AWD >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> (Power Liftgate Module (PLGM) - Electrical Diagnostics) >> DTC Troubleshooting >> B188C-13-Liftgate Control Circuit 1 - Circuit Open >> Diagnostic Test
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Diagnostic Test

  1. CHECK FOR ACTIVE DTCS 
    1. With the scan tool, record and erase the DTCs.
    2. Turn the ignition off, wait 10 seconds, then cycle 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 .
  2. CHECK THE (Q88) LIFTGATE OPEN DRIVER CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Power Liftgate Drive Unit harness connector.
    3. Measure the resistance of the (Q88) Liftgate Open Driver circuit between and the Power Liftgate Drive Unit connector.

      Is the resistance below 2.0 Ohms?

      Yes 

      • Repair the circuit for an open or high resistance.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK THE (Q89) LIFTGATE CLOSE DRIVER CIRCUIT FOR AN OPEN 
    1. Turn the ignition off.
    2. Disconnect the Power Liftgate Drive Unit harness connector.
    3. Measure the resistance of the (Q89) Liftgate Close Driver circuit between and the Power Liftgate Drive Unit connector.

      Is the resistance below 2.0 Ohms?

      Yes 

      • Repair the circuit for an open or high resistance.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  4
  4. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all PLDU harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
      • Proper connector installation.
      • Damaged connector locks.
      • Corrosion.
      • Other signs of water intrusion.
      • Weather seal damage (if equipped).
      • Bent terminals.
      • Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
      • Terminals that have been pushed back into the connector cavity.
      • Check for spread terminals and verify proper terminal tension.

      Repair any conditions that are found.

    5. Connect all PLDU harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
    10. With the scan tool, read DTCs.

      Did the DTC return?

      Yes 

      • Replace the Power Liftgate Drive Unit in accordance with the Service Information. (Refer to REMOVAL
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

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