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Home >> Jeep >> 2013 >> Compass Limited, AWD, Trans Mfr CD CVT2L >> Repair and Diagnosis >> External Pages >> Different car >> Section 180 (Driver Door Module (DDM) (DMFL/R) - Electrical Diagnostics) >> DTC Troubleshooting >> B1854-Driver Window Motor Control Circuit Low >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
  1. TEST FOR INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. With the scan tool, record and erase the DTCs.
    3. Try to operate the driver window up and down several times.
    4. Wait 30 seconds.
    5. With the scan tool, read the DTCs.

      Does the scan tool display B1854-DRIVER WINDOW MOTOR CONTROL CIRCUIT LOW?

      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 correct pin tension.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  2. WINDOW MOTOR SHORTED 
    Fig 1: Checking Window Motor For A Short
    GC0096495Courtesy of CHRYSLER GROUP, LLC
    1. With the scan tool, erase the DTCs.
    2. Turn the ignition off.
    3. Disconnect the Driver Window Motor connector.
    4. Turn the ignition on.
    5. Operate the driver window switch up and down several times.
    6. With the scan tool, read the DTCs.

      Does the scan tool display B1854-DRIVER WINDOW MOTOR CONTROL CIRCUIT LOW?

      Yes 

      • Go To  3.

      No 

      • Replace the Driver Window Motor in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  3. (Q21) DRIVER WINDOW DRIVER (DOWN) CIRCUIT SHORTED TO GROUND 
    Fig 2: Checking Driver Window Driver (Down) Circuit For A Short To Ground
    GC0090031Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Disconnect the Driver Door Module C4 connector.
    3. Measure the resistance between Ground and the (Q21) Driver Window Driver (Down) circuit.

      Is the resistance below 10, 000 Ohms?

      Yes 

      • Repair the short to ground in the (Q21) Driver Window Driver (Down) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  4.
  4. (Q11) DRIVER WINDOW DRIVER (UP) CIRCUIT SHORTED TO GROUND 
    Fig 3: Checking Driver Window Driver (Up) Circuit For A Short To Ground
    GC0090032Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between Ground and the (Q11) Driver Window Driver (Up) circuit.

      Is the resistance below 10, 000 Ohms?

      Yes 

      • Repair the short to ground in the (Q11) Driver Window Driver (Up) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  5.
  5. (Q21) DRIVER WINDOW DRIVER (DOWN) CIRCUIT SHORTED TO THE (Q11) DRIVER WINDOW DRIVER (UP) CIRCUIT 
    Fig 4: Checking Driver Window Driver (Down) Circuit For A Short To The Driver Window Driver (Up) Circuit
    GC0090033Courtesy of CHRYSLER GROUP, LLC
    1. Measure the resistance between the (Q21) Driver Window Driver (Down) circuit and the (Q11) Driver Window Driver (Up) circuit.

      Is the resistance below 10, 000 Ohms?

      Yes 

      • Repair the short between the (Q21) Driver Window Driver (Down) circuit and the (Q11) Driver Window Driver (Up) circuit.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Replace the Driver Door Module in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
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