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HOMESERVICE MANUALSDODGE AND RAM2020DURANGO GT, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTANTI-THEFT SYSTEMS(POWER LIFTGATE MODULE (PLGM) - ELECTRICAL DIAGNOSTICS)DIAGNOSIS AND TESTINGB1953-00 POWER LIFTGATE LATCH CINCH OVERCURRENTDIAGNOSTIC TEST
2020 Dodge and Ram Durango GT, AWD

Diagnostic Test

2020 Dodge and Ram Durango GT, AWDSECTION Diagnostic Test
  1. CHECK FOR ACTIVE DTCS 
    1. Make sure the battery is fully charged and vehicle charging system is operating properly.
    2. Make sure the liftgate is closed and with the scan tool, run the "Latch Home Position Test" before proceeding to ensure the latch is positioned correctly.
    3. With the scan tool, record and erase the DTCs.
    4. Cycle the ignition off, wait 10 seconds, then cycle the ignition on.
    5. Operate the power liftgate several times if possible.
    6. With the scan tool, read ACTIVE DTCs.

      Does the scan tool display B1953-POWER LIFTGATE LATCH CINCH OVERCURRENT?

      Yes 

      • Go To 2

      No 

      • Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Operate the liftgate several times and check for any binding or other obstructions.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
  2. CHECK FOR A BINDING LIFTGATE 
    1. Examine the liftgate for proper alignment, worn or binding hinges, weak liftgate prop assembly, loose/hard weatherstrip seal, and track assembly for wear or anything that would cause an obstruction to proper operation.
    2. If necessary manually operate the power liftgate on a known good vehicle and notice the effort needed to open and close for comparison.
    3. Especially notice the effort needed to unlatch and close the liftgate.

      Were any mechanical problems found?

      Yes 

      • Refer to Service information for the related symptom(s).
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST

      No 

      • Go To  3
  3. CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORTED TO GROUND 
    1. Cycle the ignition off.
    2. Disconnect the Power Liftgate Module C2 harness connector.
    3. Disconnect the Power Liftgate Latch harness connector.
    4. Measure the resistance between ground and the (Q84) Liftgate Latch Cinch Driver circuit.
    5. Wiggle the harness and check for an intermittent short condition.

      Is the resistance below 1, 000 Ohms?

      No 

      • Go To  4

      Yes 

      • Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
  4. CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORTED TO THE (Q901) LOGIC GROUND CIRCUIT 
    1. Measure the resistance between the (Q901) Logic Ground circuit and the (Q84) Liftgate Latch Cinch Driver circuit.
    2. Wiggle the harness and check for an intermittent short condition.

      Is the resistance below 1, 000 Ohms?

      No 

      • Go To  5

      Yes 

      • Repair the (Q84) Liftgate Latch Cinch Driver wire for a short to the (Q901) Logic Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
  5. CHECK THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT SHORTED TO GROUND 
    1. Measure the resistance between ground and the (Q85) Liftgate Latch Release Driver circuit.
    2. Wiggle the harness and check for an intermittent short condition.

      Is the resistance below 1, 000 Ohms?

      No 

      • Go To  6

      Yes 

      • Repair the (Q85) Liftgate Latch Release Driver circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
  6. CHECK THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT FOR A SHORT TO THE (Q901) LOGIC GROUND CIRCUIT 
    1. Measure the resistance between the (Q901) Logic Ground circuit and the (Q85) Liftgate Latch Release Driver circuit.
    2. Wiggle the harness and check for an intermittent short condition.

      Is the resistance below 1, 000 Ohms?

      No 

      • Go To  7

      Yes 

      • Repair the (Q85) Liftgate Latch Release Driver circuit for a short to the (Q901) Logic Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
  7. CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT FOR A SHORT TO THE (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT 
    1. Measure the resistance between the (Q84) Liftgate Latch Cinch Driver circuit and the (Q85) Liftgate Latch Release Driver circuit in the Power Liftgate Module C2 harness connector.

      Is the resistance below 10000.0 Ohms?

      Yes 

      • Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to the (Q85) Liftgate Latch Release Driver Circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST

      No 

      • Go To  8
  8. CHECK THE (Q84) LIFTGATE LATCH CINCH DRIVER WIRE SHORTED TO VOLTAGE 
    1. Cycle the ignition on.
    2. Measure the voltage between the (Q84) Liftgate Latch Cinch Driver circuit and ground.

      Is there any voltage present?

      No 

      • Replace the Power Liftgate Latch Assembly in accordance with the service information. Refer to LATCH, REMOVAL .
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST

      Yes 

      • Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to voltage. If the (Q84) Liftgate Latch Cinch Driver circuit is OK, replace the Power Liftgate Module in accordance with the service information. Refer to MODULE, POWER LIFTGATE CONTROL (PLGM), REMOVAL .
      • Test complete. Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.