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Pinpoint Test E: DTC C1095

WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. 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 multimeter probes.
  1. E1 CHECK THE ABS PUMP MOTOR 
    • Ignition OFF.
    • Ignition ON.
    • Is the ABS pump motor running all the time? 
    • Yes:  GO to  E2.
    • No:  GO to  E3.
  2. E2 CHECK THE ABS MODULE CONNECTOR 
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Check the connector for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Is the connector undamaged and free of any corrosion? 
  3. E3 CHECK THE PUMP MOTOR OUTPUT COMMAND (PMP_MOTOR) 
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS.
    • Toggle the PMP_MOTOR output command ON.
    • Does the ABS pump motor run for approximately 2 seconds? 
    • Yes:  TOGGLE the PMP_MOTOR output command OFF. GO to  E4.
    • No:  TOGGLE the PMP_MOTOR output command OFF.

      CLEAR the DTCs. CYCLE the ignition switch. RETRIEVE and RECORD the ABS module DTCs.

      If DTC C1095 is retrieved, GO to  E5.

      For all other ABS module DTCs, GO to ABS MODULE DTC TABLE .

  4. E4 CHECK FOR RETURNING ABS MODULE DTCs 
    • Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
    • Retrieve and record the ABS module DTCs.
    • Are any ABS module DTCs present? 
    • Yes:  If DTC C1095 is retrieved, INSTALL a new HCU. REFER to Removal and Installation . CLEAR the DTCs. REPEAT the self-test.

      For all other ABS module DTCs, GO to ABS MODULE DTC TABLE .

    • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. CARRY OUT the self-test with the brake pedal not applied.
  5. E5 CHECK THE VOLTAGE TO THE ABS MODULE 
    NOTE: The degas bottle may need to be positioned aside to access the ABS module connector.
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Ignition ON.
    • Measure the voltage between ABS module C135-1, circuit SBB08 (VT/RD), harness side and ground.
      Fig 1: Measuring Voltage Between ABS Module C135-1 & Ground
      G06094495Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  GO to  E6.
    • No:  VERIFY BJB fuse 8 (40A) is OK. If OK, REPAIR circuit SBB08 (VT/RD). CLEAR the DTCs. REPEAT the self-test.

      If not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short.

  6. E6 CHECK CIRCUIT GD123 (BK/GY) FOR AN OPEN 
    • Measure the resistance between ABS module C135-16, circuit GD123 (BK/GY), harness side and ground.
      Fig 2: Measuring Resistance Between ABS Module C135-16 & Ground
      G06094493Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to  E7.
    • No:  REPAIR circuit GD123 (BK/GY). CLEAR the DTCs. REPEAT the self-test.
  7. E7 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Ignition OFF.
    • Disconnect: ABS Module C135.
    • Check the connector for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: ABS Module C135.
    • 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 ABS module and HCU. REFER to Removal and Installation  and Removal and Installation . CLEAR the DTCs. REPEAT the self-test.
    • 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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