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HOMESERVICE MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLANTI-LOCK BRAKE SYSTEM - VEHICLE DYNAMIC SYSTEMSDIAGNOSIS AND TESTINGANTI-LOCK CONTROL - HYBRIDINSPECTION AND VERIFICATION
2010 Mercury Mariner Hybrid, AWD

Inspection and Verification

2010 Mercury Mariner Hybrid, AWDSECTION Inspection and Verification
NOTE: If a new ABS module is installed, it must be configured and the Multi-Calibration completed. Follow the scan tool directions.
  1. Verify the customer concern.
  2. Verify the stoplamps operate correctly by applying and releasing the brake pedal with the ignition switch in the OFF position. If the stoplamps do not operate correctly, refer to EXTERIOR LIGHTING . If the stoplamps operate correctly, proceed to the next step.
  3. Verify the PRNDL operates correctly on the Instrument Cluster (IC). If the PRNDL does not operate correctly, refer to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . 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
    • Active brake booster
    • Electric vacuum pump
    • Base brake system
    • Incorrectly inflated tires
    • Mismatched wheels or tires on vehicle
    • Brake pedal assembly
    • Restraints Control Module (RCM) installation
    • Wheel speed sensor ring
    • Hydraulic Control Unit (HCU)
    • Steering components and suspension components
    • Battery Junction Box (BJB) fuse(s):
      • 4 (40A)
      • 9 (50A)
      • 18 (50A)
      • 27 (10A)
    • Auxiliary relay box fuse 4 (5A)
    • Electric vacuum pump mechanical relay
    • Electric vacuum pump solid state relay
    • Stability/traction control switch
    • ABS module
    • Stoplamp switch
    • Brake fluid level switch
    • Wiring, terminals or connectors
    • Wheel speed sensor
    • RCM 
  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  .
    • refer to MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no power to the scan tool.
  8. If the scan tool does not communicate with the vehicle:
    • verify the ignition is ON.
    • verify the scan tool operation with a known good vehicle.
    • refer to MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.
  9. Carry out the network test.
    • If the scan tool responds with no communication for one or more modules, refer to MODULE COMMUNICATIONS NETWORK .
    • If the network test passes, retrieve and record Continuous Memory Diagnostic Trouble Codes (CMDTCs).
    10. NOTE: The vehicle must be at a complete standstill and on a level surface while carrying out the self-test. Any movement of the vehicle during the self-test may result in false DTCs being set.
  10. 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 MULTIFUNCTION ELECTRONIC MODULES .
  12. If no DTCs related to the concern are retrieved, GO to SYMPTOM CHART .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.