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Home >> Ford >> 2020 >> Fusion S >> Repair and Diagnosis >> External Pages >> Different car >> Section 497 (Exterior Lighting (2 Of 2) (Hybrid/ENERGI)) >> Diagnosis And Testing >> Stoplamps >> Pinpoint Tests >> Pinpoint Test A : All The STOPLAMPS Are Inoperative >> Pinpoint Test A : All The STOPLAMPS Are Inoperative

Pinpoint Test A : All The STOPLAMPS Are Inoperative

WARNING: This page is about a different car, the 2019 Ford SSV Plug-in Hybrid, 2019 Ford Police Responder Hybrid, and 2019 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

  1. A1 CHECK THE STOPLAMP SWITCH VOLTAGE SUPPLY CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect: Stoplamp Switch C278.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C278-1
      GFD436385Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  A2
    No  VERIFY the BJB fuse 54 (10A) is OK. If OK, REPAIR the circuit. If not OK, REFER to OEM Electrical Wiring Diagram Introduction (Hybrid/Energi) to identify the possible causes of the circuit short.

  2. A2 BYPASS THE STOPLAMP SWITCH

    • Connect:
      Positive Lead Measurement / Action Negative Lead
      C278-1
      GFD436405Courtesy of FORD MOTOR COMPANY
      		 C278-4

    • Ignition ON.

    Do the stoplamps illuminate? 

    Yes  REMOVE the fused jumper wire. INSTALL a new stoplamp switch. REFER to: Stoplamp Switch .
    No  LEAVE the fused jumper wire connected. GO to  A3

  3. A3 CHECK THE STOPLAMP SWITCH INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect: BCM C2280H.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280H-1
      GFD436385Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  REMOVE the fused jumper wire. GO to  A4
    No  REMOVE the fused jumper wire. REPAIR the circuit

  4. A4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Disconnect and inspect all BCM connectors.

    • Repair:

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

    • Reconnect the BCM 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 .
    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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