LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2022 >> Transit Connect Titanium, Gas/Ethanol >> Repair and Diagnosis >> Brakes >> Brakes Control Systems >> Abs Guided Routine Testing - Pinpoint Tests C - CZ >> Abs Pinpoint Tests >> Pinpoint Tests CP: EBB Brake Booster Motor Faults >> Possible Causes

Possible Causes

Fig 1: Anti-Lock Brake System-A (ABS-A) Module Connector - C135A
G13726290Courtesy of FORD MOTOR CO.

Harness Side

CIRCUIT AND PIN DESCRIPTION

Circuit Pin
PUMPPWR (Pump Power.) - SBB29 1 (GRAY/RED)
PUMPGND - GD121 2 (BLACK/YELLOW)
Fig 2: Anti-Lock Brake System-B (ABS-B) Module Connector - C135B
G13726291Courtesy of FORD MOTOR CO.

Harness Side

CIRCUIT AND PIN DESCRIPTION

Circuit Pin
VLVPWR (Valve Power) - SBB28 14 (GREEN/RED)
IGN START/RUN (Ignition START/RUN) - CBB23 41 (BROWN/YELLOW)
LOGICGND - GD192 1 (BLACK/VIOLET)
HS-CAN2- (High-Speed Controller Area Network 2 Low) - VDB26 32 (GRAY/BLUE)
HS-CAN2+ (High-Speed Controller Area Network 2 High) - VDB25 33 (GREEN/ORANGE)
Fig 3: Gateway Module A (GWM) Connector - C2431
G13726292Courtesy of FORD MOTOR CO.

Harness Side

CIRCUIT AND PIN DESCRIPTION

Circuit Pin
HS-CAN2- (High-Speed Controller Area Network 2 Low) - VDB26 17 (GRAY/BLUE)
HS-CAN2+ (High-Speed Controller Area Network 2 High) - VDB25 18 (GREEN/ORANGE)
  1. CP1: CHECK THE COMMUNICATION NETWORK 
    • Ignition ON, engine OFF.
    • Press the Read Vehicle Information button to view the results of the modules communicating on the network.
    • Retrieve the continuous memory DTCs.
    • Does the ABS module pass the network test? 
    Yes No
    Go to  CP2. DIAGNOSE the ABS module does not communicate with the diagnostic scan tool. REFER to the Module Communications Network article.
  2. CP2: CHECK THE ABS MODULE VOLTAGE SUPPLY 
    • Measure the voltage between:
      (+) 12 Volt Vehicle Battery (-) 12 Volt Vehicle Battery
      Positive terminal Negative terminal
    • Record the battery voltage.
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep m
    • ABS_A Module connector disconnected. (C135A)
    • ABS_B Module connector disconnected. (C135B)
    • Ignition ON, engine OFF.
    • Measure the voltage between:
      (+) ABS_A Module (C135A) Connector, Harness Side (-)
      VLVPWR Ground
      IGN START/RUN Ground
      PUMPPWR - SBB29 (GRAY/RED) - Pin 1 Ground
    • Measure the voltage between:
      (+) ABS_B Module (C135B) Connector, Harness Side (-)
      VLVPWR - SBB28 (GREEN/RED) - Pin 14 Ground
      IGN START/RUN - CBB23 (BROWN/YELLOW) - Pin 41 Ground
      PUMPPWR Ground
    • Is each voltage within 0.2 volt of the recorded battery voltage? 
    Yes No
    Go to  CP3. VERIFY all ABS fuses in the BCM, BCM-C and BJB are OK. REFER to the Vehicle Dynamic Systems wiring diagrams for fuse information.
    If the fuses are OK, REPAIR the circuit.
    If the fuses are not OK, REFER to the Wiring Diagrams article to identify the possible causes of the circuit short.
  3. CP3: VERIFY ABS MODULE GROUND CONNECTIONS 
    NOTE: Refer to the Grounds wiring diagrams, for ground connection information.
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Disconnect all ABS module ground joint connections. Refer to the Grounds wiring diagrams for ground information.
      • Discard the bolt(s).
    • Inspect the ground joint connections for:
      • Rust
      • Corrosion
      • Other foreign material
      • Cross-threaded fasteners
      NOTE: Do not remove any paint from the body as the ground path conduction is through the bolt threads.
    • Clean or repair the ground joint connections as necessary.
    • Connect all ABS module ground joint connections. Make sure the connections are clean, tight and not cross threaded.
      • Install a new bolt(s) and tighten to 12 Nm (106 lb-in).
    • Measure the resistance between:
      • The ground joint stud.
      • The ground joint eyelet/circuit.
    • Is the measured resistance less than 1 Ohm? 
    Yes No
    Go to  CP4. CLEAN or REPAIR the ground joint connection.
    Go to  CP4.
  4. CP4: CHECK THE ABS MODULE GROUND CIRCUIT FOR AN OPEN 
    • Disconnect the battery negative cable. Refer to Battery Disconnect and Connect in the Battery, Mounting and Cables article.
    • Measure the resistance between:
      (+) ABS_A Module (C135A) Connector, Harness Side (-)
      LOGICGND Ground
      PUMPGND - GD121 (BLACK/YELLOW) - Pin 2 Ground
    • Measure the resistance between:
      (+) ABS B Module (C135B) Connector, Harness Side (-)
      LOGICGND - GD192 (BLACK/VIOLET) - Pin 1 Ground
      PUMPGND Ground
    • Are the resistances less than 3 ohms? 
    Yes No
    Go to  CP5. REPAIR the circuit.
  5. CP5: CHECK THE CAN CIRCUITS FOR AN OPEN 
    • GWM connector disconnected. (C2431)
    • Measure the resistance between:
      (+) ABS A Module (C135A) Connector, Harness Side (-) GWM (C2431) Connector, Harness Side
      HS-CAN2- HS-CAN2- - VDB26 - Pin 17
      HS-CAN2+ HS-CAN2+ - VDB25 - Pin 18
    • Measure the resistance between:
      (+) ABS_B Module (C135B) Connector, Harness Side (-) GWM (C2431) Connector, Harness Side
      HS-CAN2- - VDB26 (GRAY/BLUE) - Pin 32 HS-CAN2- - VDB26 - Pin 17
      HS-CAN2+ - VDB25 (GREEN/ORANGE) - Pin 33 HS-CAN2+ - VDB25 - Pin 18
    • Measure the resistance between:
      (+) ABS Module Connector, Harness Side (-) GWM (C2431) Connector, Harness Side
      FD-CAN- FD-CAN-
      FD-CAN+ FD-CAN+
    • Are the resistances less than 3 ohms? 
    Yes No
    Go to  CP6. REPAIR the circuit.
  6. CP6: RECHECK THE ABS MODULE DTCS 
    • ABS_A Module connector connected. (C135A) Make sure the connector seats and latches correctly.
    • ABS_B Module connector connected. (C135B) Make sure the connector seats and latches correctly.
    • GWM connector connected. (C2431) Make sure the connector seats and latches correctly.
    • Ignition ON, engine OFF.
    • Clear the ABS DTCs.
    • Put the ABS module in sleep mode by performing the following steps:
      • With ALL doors closed, set the ignition from ON to OFF.
      • Disconnect the diagnostic scan tool.
      • Open the door, exit the vehicle and close the door.
      • Wait a minimum of 90 seconds for the ABS module to enter sleep mode.
    • Ignition ON, engine OFF.

    Carry out the ABS self-test.

    • Do any of the DTCs in the Fault Trigger Conditions Table return? 
    Yes No
    The HCU and ABS module are a single assembly known as the EBB unit.
    CHECK OASIS for any service articles: TSB, GSB, SSM or FSA.
    If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions.
    If no service articles address this concern, INSTALL a new EBB unit. REFER to the Anti-Lock Brake System (ABS) and Stability Control article.    		 The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
scientia non olet · About LEMON Manuals