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Home >> Chrysler >> 2021 >> Voyager LX, Gas >> Repair and Diagnosis >> Accessories & Equipment >> Accessories Control Systems >> (Power Liftgate Module (PLGM) - Electrical Diagnostics) >> DTC Troubleshooting >> B1953-00 Power Liftgate Latch Cinch OVERCURRENT >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. Make sure the battery is fully charged and vehicle charging system is operating properly.
    3. 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.
    4. With the scan tool, create a Vehicle Scan Report and attach it to the repair order.
    5. Erase the DTCs.
    6. Turn the ignition off, wait 10 seconds, then turn the ignition on.
    7. Operate the power liftgate several times if possible.
    8. With the scan tool, read the PLGM DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

  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 FOR A SHORT TO GROUND 
    1. Turn the ignition off.
    2. Disconnect the Power Liftgate Module C2 harness connector.
    3. Disconnect the Power Liftgate Latch harness connector.
    4. Check for continuity between ground and the (Q84) Liftgate Latch Cinch Driver circuit at the PLGM C2 harness connector.
    5. Wiggle the harness and check for an intermittent short condition.

      Is there continuity between ground and the (Q84) Liftgate Latch Cinch Driver circuit?

      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 FOR A SHORT TO THE (Q901) LOGIC GROUND CIRCUIT 
    1. Check for continuity between the (Q901) Logic Ground circuit and the (Q84) Liftgate Latch Cinch Driver circuit at the PLGM C2 connector.
    2. Wiggle the harness and check for an intermittent short condition.

      Is there continuity between the (Q901) Logic Ground circuit and the (Q84) Liftgate Latch Cinch Driver circuit?

      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 FOR A SHORT TO GROUND 
    1. Check for continuity between ground and the (Q85) Liftgate Latch Release Driver circuit at the PLGM C2 connector.
    2. Wiggle the harness and check for an intermittent short condition.

      Is there continuity between ground and the (Q85) Liftgate Latch Release Driver circuit?

      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. Check for continuity between the (Q901) Logic Ground circuit and the (Q85) Liftgate Latch Release Driver circuit at the PLGM C2 connector.
    2. Wiggle the harness and check for an intermittent short condition.

      Is there continuity between the (Q901) Logic Ground circuit and the (Q85) Liftgate Latch Release Driver circuit?

      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. Check for continuity between the (Q84) Liftgate Latch Cinch Driver circuit and the (Q85) Liftgate Latch Release Driver circuit at the Power Liftgate Module C2 harness connector.

      Is there continuity between the (Q84) Liftgate Latch Cinch Driver circuit and the (Q85) Liftgate Latch Release Driver circuit?

      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. Turn the ignition on.
    2. Measure the voltage on the (Q84) Liftgate Latch Cinch Driver circuit at the PLGM C2 connector.

      Is there any voltage present?

      No 

      • Go To  9

      Yes 

      • Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to voltage.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  9. CHECK THE LIFTGATE LATCH 
    1. Replace the Power Liftgate Latch Assembly in accordance with the service information. Refer to LATCH, REMOVAL AND INSTALLATION .
    2. Reconnect all PLGM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    3. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    4. Erase the DTCs.
    5. Turn the ignition off, wait 10 seconds, then turn the ignition on.
    6. Operate the power liftgate several times if possible.
    7. With the scan tool, read the PLGM DTCs.

      Did the DTC return?

      No 

      Yes 

      • Go To  10
  10. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all PLGM 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.
      • Perform a terminal drag test on each connector terminal to verify proper terminal tension.

      Repair any conditions that are found.

    5. Reconnect all PLGM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect 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. Using the recorded Vehicle Scan Report, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read PLGM DTCs.

      Did the DTC return?

      Yes 

      No 

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