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Home >> Ford >> 2014 >> F-150 FX2, 2D Pickup >> Repair and Diagnosis >> External Pages >> Different car >> Section 158 (Anti-Lock Brake System And Stability Control - F-150) >> Diagnosis And Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test C: DTC C1300 >> Pinpoint Test C: DTC C1300

Pinpoint Test C: DTC C1300

WARNING: This page is about a different car, the 2012 Ford Pickup. 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 CHECK THE ABS PUMP MOTOR 
    • Ignition ON.
    • Is the ABS pump motor running all the time? 
  2. C2 CHECK THE ABS MODULE PUMP MOTOR (PMP_MOTOR) OUTPUT COMMAND 
    • Connect the scan tool.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • Toggle the PMP_MOTOR output command ON.
    • Does the ABS pump motor run for approximately 3 seconds? 
      • Yes  : TOGGLE the PMP_MOTOR output command OFF.

        CLEAR the DTCs. CHECK the yellow ABS warning indicator while driving the vehicle (the brakes must not be applied) above 32 km/h (20 mph).

        If the yellow ABS warning indicator illuminates, RETRIEVE the DTCs. If DTC C1300 is retrieved again, GO to  C5.

        If the yellow ABS warning indicator does not illuminate, the system is OK.

      • No  : TOGGLE the PMP_MOTOR output command OFF. GO to C3.
  3. C3 CHECK FOR VOLTAGE TO THE ABS MODULE 
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Ignition ON.
    • Measure the voltage between ABS module C135-1, circuit SBB47 (WH/RD), harness side and ground.
      Fig 1: Measuring Voltage Between ABS Module C135-1, Circuit SBB47 (WH/RD), Harness Side And Ground
      G06167661Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
      • Yes  : GO to C4.
      • No  : VERIFY BJB fuse 47 (60A) is OK. If OK, REPAIR open in circuit SBB47 (WH/RD). If not OK, REPAIR the short circuit in circuit SBB47 (WH/RD). CLEAR the DTCs. REPEAT the self-test.
  4. C4 CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN OR EXCESSIVE RESISTANCE 
    • Ignition OFF.
    • Disconnect: Battery Negative Cable.
    • Measure the resistance between ABS module C135-13, circuit GD121 (BK/YE), harness side and ground.
      Fig 2: Measuring Resistance Between ABS Module C135-13, Circuit GD121 (BK/YE), Harness Side And Ground
      G06453233Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohms? 
      • Yes  : GO to C5.
      • No  : REPAIR circuit GD121 (BK/YE). CLEAR the DTCs. REPEAT the self-test.
  5. C5 CHECK THE ABS MODULE POWER CIRCUIT FOR CONTINUITY 
    • Measure the resistance between the ABS module C135-1, circuit SBB47 (WH-RD), harness side and battery positive.
      Fig 3: Measuring Resistance Between ABS Module C135-1, Circuit SBB47 (WH-RD), Harness Side And Battery Positive
      G07958196Courtesy of FORD MOTOR CO.
    • Is the resistance less than 0.5 ohms? 
      • Yes  : GO to C6.
      • No  : REPAIR the open circuit SBB47 (WH/RD). CLEAR the DTCs. REPEAT the self-test.
  6. C6 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect: ABS Module C135.
    • Check the connector for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect: ABS Module C135.
    • Connect: Battery Negative Cable.
    • Make sure the connector seats correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
      • Yes  : INSTALL a new HCU. REFER to Hydraulic Control Unit (HCU)  . 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. CLEAR the DTCs. REPEAT the self-test.
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