2008 Jeep Commander Overland, RWDFACTORY OEM SERVICE PROCEDURE

Diagnostic Test

  1. TEST FOR INTERMITTENT CONDITION 

    Turn the ignition on.

    With the scan tool, record and erase DTC's

    Try to operate the Driver Window up and down several times.

    Wait 30 seconds.

    With the scan tool, read DTC's.

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

    Yes 

    1. Go To  2.

    No 

    1. The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
    2. Perform BODY VERIFICATION TEST .
  2. WINDOW MOTOR SHORTED 
    Fig 1: Driver Window Motor Connector
    GC0045638Courtesy of CHRYSLER LLC

    With the scan tool, erase DTC's.

    Turn the ignition off.

    Disconnect the Driver Window Motor connector.

    Turn the ignition on.

    Operate the driver window switch up and down several times.

    With the scan tool, read DTC's.

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

    No 

    1. Replace the Window Motor.
    2. Perform BODY VERIFICATION TEST .

    Yes 

    1. Go To  3.
  3. (Q311) DRIVER WINDOW EXPRESS UP DRIVER CIRCUIT SHORT TO GROUND 
    Fig 2: Measuring Resistance Between Ground And (Q311) Driver Window Express Up Driver Circuit
    GC0045639Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the Driver Door Module C1 connector.

    Measure the resistance between Ground and the (Q311) Driver Window Express Up Driver circuit.

    Is the resistance below 1000.0 ohms? 

    Yes 

    1. Repair the (Q311) Driver Window Express Up Driver circuit for a short to ground.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Go TO  4.
  4. (Q311) DRIVER WINDOW EXPRESS UP DRIVER CIRCUIT SHORT TO (Q321) DRIVER WINDOW EXPRESS DOWN DRIVER CIRCUIT 
    Fig 3: Measuring Resistance Between (Q321) Driver Window Express Down Driver Circuit And (Q311) Driver Window Express Up Driver Circuit
    GC0045640Courtesy of CHRYSLER LLC

    Measure the resistance between the (Q321) Driver Window Express Down Driver circuit and the (Q311) Driver Window Express Up Driver circuit.

    Is the resistance below 1000.0 ohms? 

    Yes 

    1. Repair the (Q321) Driver Window Express Down Driver circuit for a short to the (Q311) Driver Window Express Up Driver circuit.
    2. Perform BODY VERIFICATION TEST .

    No 

    1. Replace the Driver Door Module.
    2. Perform BODY VERIFICATION TEST .
Factory Service Tools

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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.

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