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Pinpoint Test B : No Power In Acc

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

  1. B1 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE) WITH THE IGNITION SWITCH IN THE ACC POSITION

    • Ignition OFF.

    • Accessory ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-44
      GFD214321Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  B3
    No  GO to  B2

  2. B2 CHECK THE ACC-DESIGNATED INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.

    • Disconnect Ignition Switch C250 .

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-44
      GFD214322Courtesy of FORD MOTOR COMPANY
      		 C250-6

    Is the resistance less than 3 ohms? 

    Yes  INSTALL a new ignition switch. REFER to: Ignition Switch .
    No  REPAIR the circuit.

  3. B3 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE) WITH THE IGNITION SWITCH IN THE ON POSITION

    • Ignition ON.

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280C-44
      GFD214321Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  GO to  B4
    No  INSTALL a new ignition switch. REFER to: Ignition Switch .

  4. B4 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 and 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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