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Home >> Ford >> 2014 >> F-150 FX2, 2D Pickup >> Repair and Diagnosis >> External Pages >> Different car >> Section 558 (Exterior Lighting) >> Diagnosis And Testing >> Turn Signal and Hazard Lamps >> Pinpoint Tests >> Pinpoint Test C : The Hazard Lamp Function Is Inoperative Or Always On >> Pinpoint Test C : The Hazard Lamp Function Is Inoperative Or Always On

Pinpoint Test C : The Hazard Lamp Function Is Inoperative Or Always On

WARNING: This page is about a different car, the 2015 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

  1. C1 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

    • Ignition ON.
    • Using a diagnostic scan tool, perform the BCM self-test.

    Is DTC B1D35:11 present? 

    Yes  GO to  C2
    No  GO to  C4

  2. C2 ISOLATE THE HAZARD FLASHER SWITCH

    • Ignition OFF.
    • Disconnect: Hazard Flasher Switch C2480 .
    • Ignition ON.
    • Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the BCM self-test.

    Is DTC B1D35:11 retrieved again? 

    Yes  GO to  C3
    No  INSTALL a new hazard flasher switch. REFER to: Hazard Flasher Switch .

  3. C3 CHECK THE HAZARD FLASHER SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4280-4
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  C7
    No  REPAIR the circuit.

  4. C4 CHECK FOR A VOLTAGE SIGNAL TO THE HAZARD FLASHER SWITCH

    • Ignition OFF.
    • Disconnect: Hazard Flasher Switch C2480 .
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4280-4
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  C5
    No  GO to  C6

  5. C5 CHECK THE HAZARD FLASHER SWITCH GROUND CIRCUIT

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4280-4
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 C4280-3

    Is the voltage greater than 11 volts? 

    Yes  INSTALL a new hazard flasher switch. REFER to: Hazard Flasher Switch .
    No  REPAIR the circuit.

  6. C6 CHECK THE HAZARD FLASHER SWITCH INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C4280-4
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C2280B-19

    Is the resistance less than 3 ohms? 

    Yes  GO to  C7
    No  REPAIR the circuit.

  7. C7 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

    • Disconnect and inspect all BCM and all related in-line 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 and all related in-line 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 Hardware 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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