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Pinpoint Test A : All Power Windows Are Inoperative

WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.

  1. A1 CHECK FOR A SHORT TO GROUND IN THE POWER WINDOW SYSTEM

    • Ignition OFF.

    • INSTALL a fused jumper wire in place of BCM circuit breaker 26 (30A).

    • Ignition ON.

    • Attempt to operate each individual power window in both directions from the master window control switch as well as from each passenger door window control switch.

    Did the jumper wire fuse open during the test? 

    Yes  REFER to the SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short.
    No  If the power windows did operate with the fused jumper wire in place, INSTALL a new circuit breaker. If the power windows did not operate with the fused jumper wire in place, GO to  A2

  2. A2 CHECK THE MASTER WINDOW CONTROL SWITCH VOLTAGE CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect: Master Window Control Switch C504B.

    • Disconnect: BCM C2280C.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C504B-2
      GFD329006Courtesy of FORD MOTOR COMPANY
      		 C2280C-3

    Is the resistance less than 3 ohms? 

    Yes  GO to  A3
    No  REPAIR the circuit.

  3. A3 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Ignition OFF.

    • Disconnect and inspect all the BCM connectors.

    • Repair:

      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins as necessary
      • pushed-out pins - install new pins as necessary

    • Reconnect the BCM connectors and all previously disconnected system connectors. Make sure they seat and latch correctly.

    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to BCM GUIDED ROUTINE TESTING
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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