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Home >> Ford >> 2011 >> Escape Base, 2.5 7, AWD, Standard >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System - Vehicle Dynamic System >> Diagnosis And Testing >> Anti-Lock Control - Hybrid >> Pinpoint Tests >> Pinpoint Test P: DTCs C0048:11, 12, 64; C1108:11, 12 and 1C >> PINPOINT TEST P: DTCs C0048:11, 12, 64; C1108:11, 12 AND 1C

PINPOINT TEST P: DTCs C0048:11, 12, 64; C1108:11, 12 AND 1C

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. P1 VERIFY ALL WIRING CONNECTIONS 
    • Ignition OFF.
    • Disconnect: ABS Module C155.
    • Disconnect: Brake Booster Travel Sensor C149.
    • Using a good light source, inspect each connector terminal for any corrosion.
    • Inspect both connectors for any pushed-out pins.

      Refer to SYSTEM WIRING DIAGRAMS article for schematic and connector information.

    • Using a suitable mating terminal, check each female terminal for deformed or enlarged contacts by comparing the mating terminal's fit between each of the following pins:
      • C155-26
      • C155-27
      • C155-38
      • C149-1
      • C149-2
      • C149-3
        Fig 1: Identifying ABS Module C155 And Brake Booster Travel Sensor C149
        G07438839Courtesy of FORD MOTOR CO.
    • Refer to SYSTEM WIRING DIAGRAMS article for schematic and connector information.
    • Is each terminal free of corrosion, pushed-out pins or spread terminals? 
    • Yes:  GO to P2  .
    • No:  REPAIR the affected terminal(s). CLEAR the DTCs. REPEAT the self-test.
  2. P2 CHECK THE DTCs FROM THE SELF-TEST 
    • Review the DTCs retrieved and recorded during Inspection and Verification.
    • Is DTC C0048:11, 12 or 64 present? 
    • Yes:  If DTC C0048:11, is present, GO to P3  . If DTC C0048:12 is present, GO to  P4. If only DTC C0048:64 is present, GO to  P5.
    • No:  If DTC C1108:11 is present, GO to  P7. If DTC C1108:12 is present, GO to  P6. If only DTC C1108:1C is present, GO to  P9. For all other DTCs, REFER to the ABS MODULE DTC CHART  in this service information.
  3. P3 CHECK THE VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between the brake booster travel sensor C149-3, circuit VCB34 (WH/BU), harness side and ground.
      Fig 2: Measuring Resistance Between Brake Booster Travel Sensor C149-3, Circuit VCB34 (WH/BU), Harness Side And Ground
      G07438840Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  GO to  P5.
    • No:  REPAIR circuit VCB34 (WH/BU). CLEAR the DTCs. REPEAT the self-test.
  4. P4 CHECK THE VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON.
    • Measure the voltage between the brake booster travel sensor C149-3, circuit VCB34 (WH/BU), harness side and ground.
      Fig 3: Measuring Voltage Between Brake Booster Travel Sensor C149-3, Circuit VCB34 (WH/BU), Harness Side And Ground
      G07438841Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit VCB34 (WH/BU). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to P5  .
  5. P5 CHECK THE BRAKE BOOSTER TRAVEL SENSOR CIRCUITS FOR AN OPEN 
    • Ignition OFF.
    • Measure the resistance between the ABS module, harness side and the brake booster travel sensor, harness side as indicated in the following chart:
      CIRCUIT REFERENCE CHART

      ABS Module Circuit Brake Booster Travel Sensor
      C155-26 CCB33 (GY/OG) C149-1
      C155-27 RCB33 (VT/GY) C149-2
      C155-38 VCB34 (WH/BU) C149-3
      Fig 4: Measuring Resistance Between ABS Module, Harness Side And Brake Booster Travel Sensor, Harness Side
      G07438842Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
    • Yes:  If only DTC C0048:64 was retrieved from the self-test, INSPECT the mounting of the booster travel sensor.

      If the mounting of the booster travel sensor is OK, INSTALL a new brake booster travel sensor. REFER to Booster Travel Sensor in POWER BRAKE SYSTEM ACTUATION article. For DTC C0048:11 and C0048:12, GO to  P8.

    • No:  REPAIR the affected circuit(s). CLEAR the DTCs. REPEAT the self-test.
  6. P6 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON.
    • Measure the voltage between the brake booster travel sensor C149-1, circuit CCB33 (GY/OG), harness side and ground.
      Fig 5: Measuring Voltage Between Brake Booster Travel Sensor C149-1, Circuit CCB33 (GY/OG), Harness Side And Ground
      G07438843Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes:  REPAIR circuit CCB33 (GY/OG). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to  P8.
  7. P7 CHECK THE SIGNAL RETURN CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between the brake booster travel sensor C149-1, circuit CCB33 (GY/OG), harness side and ground.
      Fig 6: Measuring Resistance Between Brake Booster Travel Sensor C149-1, Circuit CCB33 (GY/OG), Harness Side And Ground
      G07438844Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    • Yes:  REPAIR circuit CCB33 (GY/OG). CLEAR the DTCs. REPEAT the self-test.
    • No:  GO to P8  .
  8. P8 CHECK THE BOOSTER TRAVEL SENSOR AND BRAKE BOOSTER 
    • Ignition OFF.
    • Connect: Booster Travel Sensor C149.
    • Inspect the attachment of the booster travel sensor to the brake booster. Verify the booster travel is securely attached to the booster and that the booster and booster travel sensor are free of damage.
    • Is the booster travel sensor and brake booster OK? 
    • Yes:  GO to P9  .
    • No:  INSTALL a new brake booster travel sensor. REFER to Booster Travel Sensor in POWER BRAKE SYSTEM ACTUATION article.
  9. P9 CHECK THE BOOSTER TRAVEL SENSOR (BRKBST_MEMB) PID 
    • Connect: Brake Booster Travel Sensor C149 (if not previously connected).
    • Connect: ABS Module C155 (if not previously connected).
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • Monitor the BRKBST_MEMB PID while applying and releasing the brake pedal.
    • Does the PID value increase when the brake pedal is pressed and decrease when the brake pedal is released? 
    • Yes:  CLEAR the DTCs. DRIVE the vehicle. REPEAT the self-test. If any of the DTCs identified in the normal operation of this pinpoint test return, GO to P10  .
    • No:  INSTALL a new brake booster travel sensor.

      REFER to Booster Travel Sensor in POWER BRAKE SYSTEM ACTUATION article.

  10. P10 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Disconnect: ABS Module C155.
    • Check for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: ABS Module C155.
    • Make sure the connector is seated correctly, then 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  in this service information. 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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