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Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Anti-Lock Brake System -- F250-F550 Super Duty) >> Diagnosis & Testing >> Anti-Lock Control >> Pinpoint Tests >> Pinpoint Test C: DTCS C1095 & C1096 >> Testing

Pinpoint Test C: DTCS C1095 & C1096: Testing

WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the flex probe kit for all test connections to prevent damage to the wiring terminals. Do not use standard multimeter probes.
  1. C1 CHECK THE ANTI-LOCK BRAKE SYSTEM ABS PUMP MOTOR 
    • Key in ON position.
    • Is the ABS pump motor running all the time? 
    • Yes  : GO to  C5.
    • No  : GO to C2.
  2. C2 CHECK PUMP MOTOR OPERATION 
    • Key in ON position.
    • Enter the following diagnostic mode on the scan tool: ABS Module Active Command.
    • Trigger the ABS module pump motor ON active command.
    • Does the ABS pump motor run for approximately 2 seconds? 
    • Yes  : CLEAR the DTCs. CHECK the yellow ABS warning indicator while driving the vehicle (brakes must not be applied) above 32 km/h (20 mph). If the yellow ABS warning indicator illuminates, RETRIEVE the DTCs. If DTC C1096 is retrieved, GO to  C5.

      If DTC C1095 is retrieved, INSTALL a new HCU. REFER to HYDRAULIC CONTROL UNIT (HCU) . CLEAR the DTCs. REPEAT the self-test.

    • No  : TRIGGER the ABS module pump motor OFF active command. GO to C3.
  3. C3 CHECK CIRCUIT 532 (OG/YE) FOR AN OPEN 
    • Key in OFF position.
    • Disconnect: ABS Module C135.
    • Measure the voltage between the ABS module C135 pin 31, circuit 532 (OG/YE), harness side and ground.
      Fig 1: Measuring Voltage Between ABS Module C135 Pin 31, Circuit 532 (OG/YE), Harness Side & Ground
      G03924210Courtesy of FORD MOTOR CO.
    • Key in ON position.
    • Is the voltage greater than 10 volts? 
    • Yes  : GO to C4.
    • No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  4. C4 CHECK CIRCUIT 530 (LG/YE) FOR AN OPEN 
    • Key in OFF position.
    • Measure the resistance between the ABS module C135 pin 16, circuit 530 (LG/YE), harness side and ground; and between the ABS module C135 pin 45, circuit 530 (LG/YE), harness side and ground.
      Fig 2: Checking Circuit 530 (LG/YE) For An Open
      G03924207Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes  : INSTALL a new HCU. REFER to HYDRAULIC CONTROL UNIT (HCU) . CLEAR the DTCs. REPEAT the self-test.
    • No  : REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
  5. C5 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect the ABS connector.
    • Check for:
      • corrosion.
      • pushed-out pins.
    • Connect the ABS connector and make sure that it is seated correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM ABS MODULE . 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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