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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 659 (Steering Wheel And Column Electrical Components) >> Diagnosis And Testing >> Steering Wheel and Column Electrical Components >> Pinpoint Tests >> Pinpoint Test C : No Power In On - Conventional Ignition Switch >> Pinpoint Test C : No Power In On - Conventional Ignition Switch

Pinpoint Test C : No Power In On - Conventional Ignition Switch

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

  1. C1 CARRY OUT A NETWORK TEST

    • Ignition ON.
    • Using a diagnostic scan tool, carry out the network test.

    Does the BCM and the IPC pass the network test? 

    Yes  GO to  C2
    No  REFER to: Communications Network .

  2. C2 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) U300A:01

    • Using a diagnostic scan tool, carry out the BCM self-test.

    Is DTC U300A:01 present? 

    Yes  GO to Pinpoint Test K 
    No  GO to  C3

  3. C3 CHECK FOR VOLTAGE TO THE BCM (BODY CONTROL MODULE) WITH THE IGNITION SWITCH IN THE ON POSITION

    • Ignition OFF.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-37
      GFD38392Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the voltage greater than 11 volts? 

    Yes  VERIFY the BCM fuse 34 (30A) is OK. If OK, GO to  C5
    If not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible cause of the circuit short.
    No  GO to  C4

  4. C4 CHECK THE IGNITION ON-DESIGNATED INPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Disconnect Ignition Switch C250 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2280B-37
      GFD38391Courtesy of FORD MOTOR COMPANY
      		 C250-1

    Is the resistance less than 3 ohms? 

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

  5. C5 CHECK FOR AN INTERMITTENT COMMUNICATION CONCERN

    • Ignition OFF.
    • Using a diagnostic scan tool, retrieve the Continuous Mode Diagnostic Trouble Codes (CMDTCs) from all modules.

    Are multiple communication Diagnostic Trouble Codes (DTCs) set in multiple modules? 

    Yes  DIAGNOSE an intermittent network concern. REFER to: Communications Network .
    No  GO to  C6

  6. C6 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 all other previously disconnected 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  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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