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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1866 (Anti-Lock Brake System - F150 & Mark LT) >> Diagnostic Tests >> Anti-Lock Control >> Inspection and Verification

Inspection and Verification

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If a new ABS module is installed, it must be configured. Refer to Programmable Module Installation in MODULE CONFIGURATION article.
  1. Verify the customer concern.
  2. Verify the stoplamps operate correctly by applying and releasing the brake pedal. If the stoplamps do not operate correctly, refer to EXTERIOR LIGHTING article. If the stoplamps operate correctly, proceed to the next step.
  3. Verify that the PRNDL operates correctly on the instrument cluster. If the PRNDL does not operate correctly, refer to INSTRUMENT CLUSTER article. If the PRNDL operates correctly, proceed to the next step.
  4. Visually inspect for obvious signs of mechanical or electrical damage.
    VISUAL INSPECTION CHART

    Mechanical Electrical
    • Wheel speed sensor ring
    • Hydraulic control unit (HCU)
    • Tire pressure
    • Mismatched wheels or tires on vehicle
    • Base brake system
    • Brake booster vacuum hose
    • Steering components, suspension components and tire size
    • Central junction box (CJB) fuse(s):
      • 14 (10A)
      • 15 (5A)
      • 103 (20A)
      • 112 (40A)
    • ABS module
    • Wheel speed sensors
    • Stoplamp switch
    • Brake fluid level switch
    • Wiring, terminals or connectors
  5. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
    6. NOTE: Make sure to use the latest scan tool software release.
  6. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).
    7. NOTE: The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.
  7. If the scan tool does not communicate with the VCM:
    • check the VCM connection to the vehicle.
    • check the scan tool connection to the VCM.
  8. If the scan tool does not communicate with the vehicle:
    • verify the ignition key is in the ON position.
    • verify the scan tool operation with a known good vehicle.
  9. Carry out the network test.
    • If the network test passes, retrieve and record continuous memory DTCs.
  10. Clear the continuous DTCs and carry out the self-test diagnostics for the ABS module.
  11. If the DTCs retrieved are related to the concern, go to ABS Module DTC Chart. For all other DTCs, refer to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES article.
  12. If no DTCs related to the concern are retrieved, go to Symptom Chart .
    NOTE: Always retrieve the continuous DTCs after running the self-test.
    ABS MODULE DTC CHART

    DTC Description Source Action
    B1342 ECU is Defective ABS
    NOTE: If other DTCs are present, repair them before installing a new component.
    CLEAR the DTCs. REPEAT the self-test. RETRIEVE the DTCs. If DTC B1342 is retrieved, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module  in this article. REPEAT the self-test.
    B1596 Service Continuous Codes ABS
    NOTE: This DTC does not indicate a malfunction of the ABS. If other DTCs are present, REPAIR them before diagnosing this DTC.
    Some DTCs cannot be detected by the ABS module until the ignition switch is cycled from ON to OFF and back to ON again. When DTCs are cleared using the scan tool, the ignition switch needs to be cycled in order to clear this DTC and have the ABS module check for other DTCs.DIAGNOSE all other DTCs. CLEAR the DTCs. CYCLE the ignition switch. RETRIEVE the DTCs. REFER to the ABS Module DTC Chart.
    B1676 Battery Pack Voltage Out of Range ABS Go to Pinpoint Test A .
    B2477 Module Configuration Failure ABS CONFIGURE the ABS module. REFER to Programmable Module Installation in MODULE CONFIGURATION article. CLEAR the DTC. REPEAT the self-test. If DTC B2477 returns, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module  in this article.
    B2900 VIN Mismatched ABS This DTC indicates that the vehicle identification number (VIN) stored in the PCM does not match the VIN in the ABS module.
    VERIFY that the information on the VIN plate matches the VIN in the PCM and the ABS module. CONFIGURE the module that does not match the VIN plate. REFER to Programmable Module Installation in MODULE CONFIGURATION article.
    C1145 Wheel Speed Sensor RF Input Circuit Failure ABS Go to Pinpoint Test C .
    C1155 Wheel Speed Sensor LF Input Circuit Failure ABS Go to Pinpoint Test C .
    C1222 Wheel Speed Mismatch ABS Go to Pinpoint Test D .
    C1230 Wheel Speed Sensor Rear Center Input Circuit Failure ABS Go to Pinpoint Test C .
    C1237 Wheel Speed Sensor Rear Center Input Signal Missing ABS Go to Pinpoint Test D .
    C1266 ABS Valve Power Relay Circuit Failure ABS Go to Pinpoint Test E .
    C1296 Wheel Speed Sensor LF Input Signal Missing ABS Go to Pinpoint Test D .
    C1297 Wheel Speed Sensor RF Input Signal Missing ABS Go to Pinpoint Test D .
    C1300 ABS Hydraulic Pump Motor Circuit Failure ABS Go to Pinpoint Test B .
    C1850 Mismatched PCM and ABC Modules (Do Not Match) ABS This DTC indicates that the PCM is not configured correctly for traction control. CONFIGURE the PCM. REFER to Programmable Module Installation in MODULE CONFIGURATION article. CLEAR the DTC. REPEAT the self-test.
    U0073 Control Module Communication Bus Off Fault Network Fault REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the high-speed controller area network (HS-CAN) bus.
    U0100 Loss of Communication with PCM Network
    Fault    		 REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus.
    U0102 Loss of Communication with Four Wheel Drive (4WD) Control Module Network
    Fault    		 REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus.
    U1900 CAN Communication Bus Fault-Receive Error Network Fault REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus.
    U2023 Fault Received From External Node Network Fault REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the HS-CAN bus.
    U2050 No Application Present Network
    Fault    		 CONFIGURE the ABS module. REFER to Programmable Module Installation in MODULE CONFIGURATION article. CLEAR the DTCs. REPEAT the self-test. RETRIEVE the DTCs. If DTC U2050 is retrieved again, INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module  in this article. REPEAT the self-test.
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