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Pinpoint Test G: DTC B1310:12

WARNING: This page is about a different car, the 2012 Ford Pickup, 2012 Ford F550 Super Duty, 2012 Ford F450 Super Duty, and 2012 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
  1. G1 CHECK THE RUN/START RELAY 
    • Ignition OFF.
    • Disconnect: Run/Start Relay.
    • Carry out the appropriate relay component test.

      Refer to OEM COMPONENT TESTING .

    • Is the relay OK? 
    • Yes  : GO to  G2.
    • No  : INSTALL a new run/start relay. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
  2. G2 CHECK THE RUN START/RELAY CIRCUIT FOR A SHORT TO VOLTAGE 
    • Connect: Run/Start Relay.
    • Ignition ON.
    • Measure and record battery voltage.
      Fig 1: Measuring Battery Voltage
      G06544266Courtesy of FORD MOTOR CO.
      • NOTE: This pinpoint test step directs testing circuits using a backprobe method. Use the special backprobe tool specified in the tool list. Do not force test leads or other probes into the connectors. Adequate care must be exercised to avoid connector terminal damage while ensuring that good electrical contact is made with the circuit or terminal. Failure to follow these instructions may cause damage to wiring, terminals, or connectors and subsequent electrical faults.
    • Measure the voltage by backprobing between BCMC2280F-18, circuit CDC55 (BN/VT), harness side and ground.
    • Is the voltage equal to the recorded battery voltage? 
    • Yes  : REPAIR circuit CDC55 (BN/VT). CARRY OUT the self-test. CLEAR all DTCs. REPEAT the self-test. TEST the system for normal operation.
    • No  : GO to  G3.
  3. G3 CHECK FOR CORRECT BCM OPERATION 
    • Disconnect: All BCM Connectors.
    • Check the connectors for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect: All BCM Connectors.
    • Make sure the connectors are seated correctly. Carry out the BCM on-demand self-test.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation.
    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.
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