LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Taurus LX, 3.0 2, AX4N >> Repair and Diagnosis >> External Pages >> Different car >> Section 1500 (Anti-Lock Brake System - Vehicle Dynamic Systems) >> Diagnosis And Testing >> Anti-Lock Control - Hybrid >> Pinpoint Tests >> Pinpoint Test T: DTCs C101C:01 and 71 >> PINPOINT TEST T: DTCs C101C:01 AND 71

PINPOINT TEST T: DTCs C101C:01 AND 71

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
  1. T1 VERIFY ALL WIRING CONNECTIONS 
    • Ignition OFF.
    • Disconnect: ABS Module C155.
    • Disconnect: Vacuum Pump Motor C1119.
    • Disconnect: Vacuum Pump Mechanical Relay.
    • Disconnect: Vacuum Pump Solid State Relay.
    • Using a good light source, inspect each connector terminal for any corrosion.
    • Inspect both connectors for any pushed-out pins.

      Refer to appropriate 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:
      • C155-15
      • C155-20
      • C155-35
      • C1119-1
      • C1119-2
        Fig 1: Identifying Vacuum Pump Motor C1119 And ABS Module C155 Connector Pins
        G06389188Courtesy of FORD MOTOR CO.
    • Using the same procedure as above, compare the fit of each cavity for the vacuum pump solid state relay and the vacuum pump mechanical relay.
    • Refer to appropriate SYSTEM WIRING DIAGRAMS article for schematic and connector information.
    • Is each terminal free of corrosion, pushed-out pins or spread terminals? 
    1. Yes:  GO to T2  .
    2. No:  REPAIR the affected terminal(s). CLEAR the DTCs. REPEAT the self-test.
  2. T2 CHECK THE DTCs FROM THE ABS MODULE SELF-TEST 
    • Review the DTCs retrieved and recorded during Inspection and Verification.
    • Is DTC C101C:01 or C101C:71 present? 
    1. Yes:  If DTC C101C:01 is present, GO to  T4.
    2. No:  If DTC C101C:71 is present, GO to T3  .

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

  3. T3 CHECK THE SOLID STATE RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between the vacuum pump solid state relay circuit CCB30 (GY/VT), harness side and ground.
      Fig 2: Measuring Resistance Between Vacuum Pump Solid State Relay Circuit CCB30 (GY/VT) Harness Side And Ground
      G06094579Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes:  INSTALL a new vacuum pump solid state relay.
    2. No:  REPAIR circuit CCB30 (GY/VT). CLEAR the DTCs. REPEAT the self-test.
  4. T4 CHECK VACUUM PUMP (VAC_PMP) ACTIVE COMMAND 
    • Connect: ABS Module C155.
    • Connect: Vacuum Pump Motor C1119.
    • Connect: Vacuum Pump Solid State Relay.
    • Connect: Vacuum Pump Mechanical Relay.
    • Ignition ON.
    • Enter the following diagnostic mode on the scan tool: DataLogger - ABS Module.
    • Toggle the VAC_PMP active command ON.
    • Does the vacuum pump run when commanded ON? 
    1. Yes:  TOGGLE the VAC_PMP active command OFF, GO to  T17.
    2. No:  TOGGLE the VAC_PMP active command OFF, GO to T5  .
  5. T5 CHECK BJB FUSE 4 (40A) 
    • Ignition OFF.
    • Disconnect: BJB  Fuse 4 (40A).
    • Check fuse: BJB  4 (40A).
    • Is the fuse OK? 
    1. Yes:  GO to T6  .
    2. No:  If the fuse is not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short.
  6. T6 CHECK THE VACUUM PUMP MECHANICAL RELAY 
    • Disconnect: Vacuum Pump Mechanical Relay.
    • Carry out the relay component test.

      Refer to appropriate SYSTEM WIRING DIAGRAMS article for component testing.

    • Is the vacuum pump mechanical relay OK? 
    1. Yes:  GO to T7  .
    2. No:  INSTALL a new vacuum pump mechanical relay. CLEAR the DTCs. REPEAT the self-test.
  7. T7 CHECK THE VACUUM PUMP MECHANICAL RELAY COIL POWER CIRCUIT FOR AN OPEN 
    • Measure the resistance between vacuum pump mechanical relay circuit SBB04 (GN/RD) and BJB  fuse 4 (40A), output side.
      Fig 3: Checking Vacuum Pump Mechanical Relay Coil Power Circuit For An Open
      G06094580Courtesy of FORD MOTOR CO.
    • Is the resistance less than 10 ohms? 
    1. Yes:  GO to T8  .
    2. No:  REPAIR circuit SBB04 (GN/RD). CLEAR the DTCs. REPEAT the self-test.
  8. T8 CHECK THE VACUUM PUMP MECHANICAL RELAY INPUT CIRCUIT FOR AN OPEN 
    • Measure the resistance between vacuum pump mechanical relay circuit SBB04 (GN/RD) and BJB  fuse 4 (40A), output side.
      Fig 4: Checking Vacuum Pump Mechanical Relay Input Circuit For An Open
      G06094581Courtesy of FORD MOTOR CO.
    • Is the resistance less than 10 ohms? 
    1. Yes:  GO to T9  .
    2. No:  REPAIR circuit SBB04 (GN/RD). CLEAR the DTCs. REPEAT the self-test.
  9. T9 CHECK THE VACUUM PUMP MECHANICAL RELAY COIL GROUND CIRCUIT FOR AN OPEN 
    • Disconnect: ABS Module C155.
    • Measure the resistance between vacuum pump mechanical relay circuit CBB30 (GY/VT) and ABS module C155-35, circuit CBB30 (GY/VT), harness side.
      Fig 5: Checking Vacuum Pump Mechanical Relay Coil Ground Circuit For An Open
      G06094582Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T10  .
    2. No:  REPAIR circuit CBB30 (GY/VT). CLEAR the DTCs. REPEAT the self-test.
  10. T10 CHECK THE VACUUM PUMP MECHANICAL RELAY OUTPUT CIRCUIT FOR AN OPEN 
    • Disconnect: Vacuum Pump Solid State Relay.
    • Measure the resistance between vacuum pump mechanical relay circuit CBB04 (VT) and vacuum pump solid state relay circuit CBB04 (VT).
      Fig 6: Checking Vacuum Pump Mechanical Relay Output Circuit For An Open
      G06094583Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T11  .
    2. No:  REPAIR circuit CBB04 (VT). CLEAR the DTCs. REPEAT the self-test.
  11. T11 CHECK THE ELECTRIC VACUUM PUMP SOLID STATE RELAY TRIGGER CIRCUIT FOR AN OPEN 
    • Measure the resistance between ABS module C155-15, circuit CCB30 (GY/VT), harness side and vacuum pump solid state relay circuit CCB30 (GY/VT).
      Fig 7: Checking Electric Vacuum Pump Solid State Relay Trigger Circuit For An Open
      G06094584Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T12  .
    2. No:  REPAIR circuit CCB30 (GY/VT). CLEAR the DTCs. REPEAT the self-test.
  12. T12 CHECK THE ELECTRIC VACUUM PUMP SOLID STATE RELAY TRIGGER CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON.
    • Measure the voltage between vacuum pump solid state relay circuit CCB30 (GY/VT) and ground.
      Fig 8: Measuring Voltage Between Vacuum Pump Solid State Relay Circuit CCB30 (GY/VT) And Ground
      G06094585Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes:  REPAIR circuit CCB30 (GY/VT). CLEAR the DTCs. REPEAT the self-test.
    2. No:  GO to T13  .
  13. T13 CHECK THE VACUUM PUMP SOLID STATE RELAY OUTPUT CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Auxiliary Relay Box Fuse 4 (5A).
    • Disconnect: Vacuum Pump C1119.
    • Measure the resistance between vacuum pump solid state relay circuit CCB29 (WH/GN) and vacuum pump C1119-1, circuit CCB29 (WH/GN), harness side.
      Fig 9: Checking Vacuum Pump Solid State Relay Output Circuit For An Open
      G06094586Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T14  .
    2. No:  REPAIR circuit CCB29 (WH/GN). CLEAR the DTCs. REPEAT the self-test.
  14. T14 CHECK THE VACUUM PUMP SOLID STATE RELAY OUTPUT CIRCUIT FOR A SHORT TO GROUND 
    • Measure the resistance between the vacuum pump solid state relay circuit CCB29 (WH/GN) and ground.
      Fig 10: Measuring Resistance Between Vacuum Pump Solid State Relay Circuit CCB29 (WH/GN) And Ground
      G06094587Courtesy of FORD MOTOR CO.
    • Is the resistance greater than 10,000 ohms? 
    1. Yes:  GO to T15  .
    2. No:  REPAIR circuit CCB29 (WH/GN). CLEAR the DTCs. REPEAT the self-test.
  15. T15 CHECK THE VACUUM PUMP GROUND CIRCUIT FOR AN OPEN 
    • Measure the resistance between the vacuum pump C1119-2, circuit GD133 (BK/GY), harness side and ground.
      Fig 11: Measuring Resistance Between Vacuum Pump C1119-2, Circuit GD133 (BK/GY) Harness Side And Ground
      G06094588Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T16  .
    2. No:  REPAIR circuit GD133 (BK/GY). CLEAR the DTCs. REPEAT the self-test.
  16. T16 CHECK THE VACUUM PUMP OPERATION 
    • Ignition OFF.
    • Connect: Vacuum Pump C1119.
    • Connect: BJB  Fuse 4 (40A).
    • Connect a fused jumper wire between vacuum pump mechanical relay circuit SBB04 (GN/RD) and vacuum pump mechanical relay circuit CBB04 (VT).
      Fig 12: Identifying Fused Jumper Wire Connection Between Vacuum Pump Mechanical Relay Circuit SBB04 (GN/RD) And Circuit CBB04 (VT)
      G06094589Courtesy of FORD MOTOR CO.
    • Momentarily  connect a fused jumper wire between vacuum pump solid state relay circuit CBB04 (VT) and vacuum pump solid state relay circuit CCB29 (WH/GN).
      Fig 13: Identifying Fused Jumper Wire Connection Between Vacuum Pump Solid State Relay Circuit CBB04 (VT) And Circuit CCB29 (WH/GN)
      G06094590Courtesy of FORD MOTOR CO.
    • Does the vacuum pump run? 
    1. Yes:  REMOVE the fused jumper wires. INSTALL a new vacuum pump solid state relay. CLEAR the DTCs. REPEAT the self-test.
    2. No:  REMOVE the fused jumper wires. INSTALL a new vacuum pump. REFER to Brake Vacuum Pump in POWER BRAKE ACTUATION .

      CLEAR the DTCs and REPEAT the self-test.

  17. T17 CHECK AUXILIARY RELAY BOX FUSE 4 (5A) 
    • Disconnect: Auxiliary Relay Box Fuse 4.
    • Check fuse: Auxiliary Relay Box 4 (5A).
    • Is the fuse OK? 
    1. Yes:  GO to T18  .
    2. No:  If the fuse is not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short.
  18. T18 CHECK THE VACUUM PUMP SOLID STATE RELAY OUTPUT CIRCUIT BETWEEN THE VACUUM PUMP SOLID STATE RELAY AND AUXILIARY RELAY BOX FUSE 4 (5A) FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Vacuum Pump Solid State Relay.
    • Disconnect: Vacuum Pump C1119.
    • Measure the resistance between vacuum pump solid state relay circuit CCB29 (WH/GN) and auxiliary relay box fuse 4 (5A), input side.
      Fig 14: Measuring Resistance Between Vacuum Pump Solid State Relay And Auxiliary Relay Box Fuse 4 (5A)
      G06094591Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T19  .
    2. No:  REPAIR circuit CCB29 (WH/GN). CLEAR the DTCs. REPEAT the self-test.
  19. T19 CHECK THE VACUUM PUMP MONITOR CIRCUIT FOR AN OPEN 
    • Disconnect: ABS Module C155.
    • Measure the resistance between auxiliary relay box fuse 4 (5A), output side, and ABS module C155-20, circuit CB101 (BU), harness side.
      Fig 15: Checking Vacuum Pump Monitor Circuit For An Open
      G06094592Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    1. Yes:  GO to T20  .
    2. No:  REPAIR circuit CB101 (BU). CLEAR the DTCs and REPEAT the self-test.
  20. T20 CHECK THE VACUUM PUMP MONITOR CIRCUIT FOR A SHORT TO VOLTAGE 
    • Ignition ON.
    • Measure the voltage between auxiliary relay box fuse 4 (5A), output side and ground.
      Fig 16: Measuring Voltage Between Auxiliary Relay Box Fuse 4 (5A) Output Side And Ground
      G06094593Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    1. Yes:  REPAIR circuit CB101 (BU). CLEAR the DTCs and REPEAT the self-test.
    2. No:  GO to T21  .
  21. T21 CHECK FOR CORRECT ABS MODULE OPERATION 
    • Check ABS module C155 for:
      • corrosion.
      • pushed-out pins.
      • spread terminals.
    • Connect: ABS Module C155.
    • Connect: Vacuum Pump C1119.
    • Connect: BJB  Fuse 4 (40A).
    • Connect: Auxiliary Relay Box Fuse 4 (5A).
    • Connect: Vacuum Pump Mechanical Relay.
    • Connect: Vacuum Pump Solid State Relay.
    • Make sure each connector seats correctly, then operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. Yes:  INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . TEST the system for normal operation.
    2. 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.
scientia non olet · About LEMON Manuals